baber/WOPTO huggingface dataset:
Patent GB-1249735-A (GB)
Title: Push button switches
Inventor: SCHADOW RUDOLF
IPC: H01H13/14
Filed: 1969-02-03
Abstract: 1,249,735. Push-button switches. R. SCHADOW. 3 Feb., 1969 [21 Feb., 1968], No. 5723/69. Addition to 1,087,357. Heading H1N. A push-button switch of the type wherein the slider 5 can be withdrawn after removal of a stop member (as in Specification 1,087,357) has a stop member 12 retained by the return spring 8 of the slider 5. The spring 8 surrounds the member 12 which has its legs 12a and 12b engaged in respective grooves 14 and 13 of different depths such that its cross arm is at an angle to the axis of the slider 5 whereby the spring 8 exerts a force component perpendicular to the said axis. Alternatively, the legs 12a and 12b may be of different lengths. The leg 12a may engage a straight slot 14, allowing simple retractive movement of the slider 5, or a heartshaped groove (18, Fig. 2, not shown) providing a detent mechanism. In a modification (Fig. 3, not shown) both straight and heart-shaped grooves are provided in the slider 5 and the leg 12a may be alternatively positioned to engage the groove providing the desired function. In two further modifications (Figs 4 and 5, not shown) the configurations of the two grooves are such that the alternative functions are provided by inserting stop members of different lengths. Two or more switches may be mounted on a channel member 19 and a known interlock (not described) provided for release of one when another is depressed.
Patent GB-548231-A (GB)
Title: Improved process and apparatus for the production of dispersible sulphur
IPC: C01B17/10
Filed: 1941-05-03
Abstract: 548,231. Sulphur dispersions. COOPER, McDOUGALL & ROBERTSON, Ltd., ROLLO, D., McINTYRE, R., and WILLMORE, E. S. R. May 3, 1941. No. 5783. [Class 1 (i)] Dispersible sulphur is obtained by mixing molten sulphur and a heated protective colloid solution, emulsifying the mixture by forming under pressure through jets, and cooling the emulsion to form a paste. The protective colloid solution may consist of sulphite lye and an alkali. The paste may be thickened by addition of sulphite residue, soda ash, and sodium sulphate and dried in vacuo to a powder. The apparatus used comprises a vessel a in which the protective colloid solution is heated and a conduit c in which the solution is circulated by a multiple pump d. Sulphur is melted in a vessel f and forced by a gear pump g into the conduit. An emulsifying device k included in the circuit is shown in Fig. 2.
Patent GB-344641-A (GB)
Title: Thermostatic control device for regulating the heating of metal melting pots
IPC: B41B11/86
Filed: 1930-02-21
Abstract: 344,641. Thermostats. INTERTYPE CORPORATION, 1440, Broadway, New York, U.S.A. Feb. 21, 1930, No. 5829. Convention date, Feb. 27, 1929. [Class 64 (ii).] In a device for regulating the heating of metal melting pots, a thermal element in the metal in the pot controls both the supply of gas to a burner and the current to an electric heater. The thermal element comprises a tube a and rod b, the rod projecting into a casing c where it engages a bell crank lever e, f, the arm f of which serves as the closure member for the gas outlet pipe d<1>, from the casing c. The bell-crank lever is pivoted against the point of an adjusting screw h and is pressed towards the valve seating by a spring n. The arm f actuates a rod i which presses against a pivoted spring-pressed lever m. An adjustable screw p presses against a lever m<1> supported by a flat spring wand having a pin x adapted to tilt a mercury switch l. The casings c, k may be separated, and the thermal element a, b may be inserted in place of the plug u, so that the rod b contacts with the screw r to actuate the switch alone.
Patent GB-1108111-A (GB)
Title: Improvements in or relating to clutch operating devices
Inventor: FINEMAN HAROLD
IPC: F16D25/08
Filed: 1965-02-11
Abstract: 1,108,111. Controlling clutches. GIRLING Ltd. 28 Jan., 1966 [11 Feb., 1965; 12 Feb., 1965], Nos. 5947/65 and 6203/65. Heading F2L. A clutch is disengaged by hydraulic pressure aided by engine inlet manifold vacuum. As shown a clutch pedal 1 actuates a piston of a master cylinder 2 supplying liquid through a port 6 to a cylinder 5 having a, piston 7 controlling the clutch. The piston 7 is connected to a diaphragm 15 having a chamber 16 connected to the engine air intake manifold 19, the other side of the diaphragm being subject to atmospheric pressure. In a modification communication between the chamber 16 and the inlet manifold is controlled by a valve which is opened either on initial movement of the piston 7 or on initially supplying hydraulic pressure to this piston. In another modification both sides of the diaphragm are normally subject to manifold vacuum, initial movement of the piston closes communication between the sides of the diaphragm, and further movement opens the right-hand side of the diaphragm to the atmosphere. The piston may be connected to the clutch mechanically or hydraulically.
Patent GB-452721-A (GB)
Title: Improvements in clutch devices
IPC: F16D13/66
Filed: 1935-02-25
Abstract: 452,721. Tapping. EMRICK, G. W., 594, Johnson Avenue, Brooklyn, New York, U.S.A. Feb. 25, 1935, No. 6016. Convention date, May 5, 1934. [Class 83 (iii)] [See also Group XXIV] In a conical friction clutch for use in tapping attachments &c., the inner member comprises a split tubular friction body 36 encircling a split spring tube 34, which latter normally maintains the body 36 in expanded condition while permitting contraction under load. The body 36 is double conical so as to co-operate either with a female cone 13 secured on the driving spindle or with a female cone 18 driven through a reversing train. The body 36 is composed of asbestos &c. impregnated with synthetic resin, the outer surface being heat treated so as to carbonize it and felt or like oil-absorbent and cushioning material 38 being disposed between its edges at the split. The body 36 is connected to the driven spindle 12 by means of a universal joint, comprising a member 31 in which is mounted for rotary and sliding movement a pin 32 mounted transversely in the body 36 and in a bore 30 of which are mounted for rotary and sliding movement a pair of lugs 29 on the spindle. The pin 32 is retained in the body 36 by a split ring 40 engaging a groove 39.
Patent GB-491448-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J31/52
Filed: 1937-03-01
Abstract: 491,448. Supply systems for vacuum and low-pressure discharge apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. March 1, 1937, No. 6054. Convention date, Feb. 29, 1936. [Class 38 (iv)] [Also in Group XL] In television transmission a picture is focused on to a mosaic 33 of photo-electric elements insulated from each other and acting as a control grid for a cloud of electrons from a cathode source 2 of extended area ; the electron emission from the mosaic due to the picture varies the potential of the elements and thereby the number of electrons passing through the mosaic to form an electron image which is focused on to a fluorescent screen or on a double-sided mosaic 38 used in signal transmission. A suitably biassed grid 54 collects the secondaries emitted from the mosaic 38. An impulse generator 49 supplies the deflecting coils 47 and also the biassing current for the photo-electric mosaic 33. Specifications 315,362, [Class 40 (iii)], 472,859, and 472,861, [both in Group XL], are referred to.
Patent GB-806612-A (GB)
Title: Improvements in or relating to machine tools and methods of machining
IPC: B23Q11/00
Filed: 1956-02-27
Abstract: 806,612. Drilling. RAYTHEON MANUFACTURING CO. Feb. 27, 1956 [Feb. 25, 1955], No. 6072/56. Class 83 (3). [Also in Group XXIII] A drilling-machine comprises movable supports 10, 38 for the drill 14 and the work 33, one of the supports, when in a predetermined position, being acted upon by a corresponding resultant force tending to displace the support towards the other support, and the other support being displaceable towards the first support during the drilling-operation to counteract this force and maintain the latter support substantially in the predetermined position, whereby the thrust exerted between the tool and work is maintained substantially constant. As illustrated, the work, on a table 38, Fig. 4, supported on axial and lateral slides, is fed against the drill under manual control or automatically, e.g. by an electric motor 40 controlled automatically by a switch 35 in accordance with slight movements of the gravity-fed-drill during the drilling-operation. The drill 14, Fig. 2, is secured, by a screw 16 and a clamp 15, in the support 10, which is pivoted at 21, 22 on parallel links 17, 18 mounted in ball-bearings 19, 20 in a stationary frame 25. The links 17, 18 are preferably of U-shape to provide parallel links on both sides of the support 10, the weight of the support and attached parts being carried by a spring 26 compressed between a bracket 23 on the support and a sleeve-nut 27 on a bolt 24 depending from the frame 25 and passing freely through the bracket. The spring, of known strength, is compressed until the links are horizontal, and the vertical movements of the drill are preferably limited to Œ 50 mils. from the position in which the links 17, 18 of 5 inches length are horizontal, movements of the drill from this pre-determined position being indicated by a dial-gauge 29 supported by the frame in contact with a stud 28 on the support 10. In operation, the work is brought into contact with the tool and the sleeve-nut 27 unscrewed until the required drilling-pressure, indicated by an adjustable index-sleeve 32 on the sleeve-unit and a scale 31 on the bolt 24, is obtained through gravity. As drilling proceeds, the operator, observing the dial-gauge 29, may control the feed of the work to maintain the links horizontal and hence the drilling-pressure constant. Alternatively, the normally-openswitch 35, supported from the bracket 25 and operated by movement of the stud 28, is arranged to control the feed-motor 40 automatically, the switch closing to operate the motor when the drill descends 50 mils. from the horizontal position of the links, and opening when the drill rises 50 mils. above the neutral position. A cover 42 excludes dust from the parallelogram-linkage.
Patent GB-837058-A (GB)
Title: Improvements in or relating to the production of a concentrate of hops
Inventor: STARK FORTNEY HILLMAN
IPC: C12C3/08
Filed: 1958-02-25
Abstract: A concentrate of hops in wort-soluble form is prepared by treating freshly-gathered hops with a solvent, e.g. a lower aliphatic monohydric alcohol, ether, ketone, or ester of acetic acid, and preferably methanol, in which a  and b  soft resins and volatile oils are soluble, and separating the extract.  The solvent, which may also dissolve chlorophyll and carotene, may be flowed over the hops, and the extraction is preferably performed at approximately ambient temperature.  The extract is concentrated by evaporation under reduced pressure and the last traces of solvent are removed by washing with water.  One or two grams of the concentrate are added to each gallon of wort.
Patent GB-588959-A (GB)
Title: Prerotation airplane tire and method of making it
IPC: B64C25/40
Filed: 1945-03-12
Abstract: 588,959. Pneumatic tyres. WINGFOOT CORPORATION. March 12, 1945, No. 6153. Convention date, Aug. 11, 1944. [Class 144 (ii)] Tyres for aircraft landing wheels are fitted, on one or both side-walls, with detachable flaps 12 adapted to initiate wheel-spin when opened by the airflow. As shown in Figs. 1 and 3, the flap proper consists of a reinforced rubber strip 16 secured by press-button fasteners 18, 20 (or other readily-detachable means) to an anchor-strip 14 vulcanized or'otherwise permanently secured to the tyre-wall 10. Fig. 6 shows, in opened position, a bellows-type modification in which the flap 48 is connected by collapsable walls 50 to a base-strip 46 which is detachably connected to a pair of anchor-strips 42, 44.
Patent GB-879166-A (GB)
Title: Improvements in or relating to the manufacture of polymeric materials
Inventor: PACKER ERIC ARTHUR
IPC: C08J9/00
Filed: 1958-02-26
Abstract: Cellular polyurethanes are prepared by reacting polyisocyanates with polyethers having terminal hydroxy groups in the presence of an alkyl phenol-ethylene oxide condensate containing from 4-30 molecular proportions of the oxide to 1 of the phenol.  Water and a catalyst, e.g. tertiary amines or their salts are present whilst optional ingredients are tri-isocyanates; less than 5% molar of polyfunctionals copolymerized with the ether; pore modifiers, e.g. polysiloxane ethylene oxide-fatty acid condensates and wetting agents; cross-linkers, fillers, colourants and flame proofers. Lists of suitable reactants and some of the optional ingredients are given. Specifications 733,624 and 839,183 are referred to.ALSO:Cellular polyurethanes are obtained from polyisocyanates, polyethers with terminal hydroxy groups and an alkyl phenol-ethylene oxide condensate containing from 4 to 30 molecular proportions of the oxide to 1 of the phenol.  Water and catalysts e.g. tertiary amines and their salts, and optional ingredients are tri isocyanates; pore modifiers e.g. polysiloxanes, ethylene oxide-fatty acid condensates and wetting agents; cross-linkers, fillers, colourants and flame proofers.  Lists of suitable reactants and some of the optional ingredients are given. Specifications 733,624 and 839,183 are referred to.
Patent GB-1457393-A (GB)
Title: Process for the preparation of polymerisable stable organic dispersions
IPC: C08L33/00
Filed: 1975-02-14
Abstract: 1457393 Production of ethylene polymer/unsaturated polyester compositions BAYER AG 14 Feb 1975 [15 Feb 1974 23 Feb 1974 19 Oct 1974] 6277/75 Heading C3P In a process for producing a dispersion of an ethylene polymer in a solution of an unsaturated polyester in a vinyl aromatic monomer, a solution of the ethylene polymer in the vinyl aromatic compound, and a solution of the unsaturated polyester in the vinyl aromatic compound, are combined at 50-120 C. in the presence of a dispersing agent and in a zone of high turbulence, and the resulting mixture is withdrawn from this zone and stirred at 50- 120 C. until a low viscosity pourable mixture is obtained. The zone of high turbulence may be produced in a stirred kettle which has a disc stirrer and flow breakers. The stirrer shaft may be hollow and one of the said solutions may be introduced directly into the kettle, and the other through the hollow shaft. In the examples ethylene polymers used are polyethylene and various ethylene/vinyl acetate polymers. The monomer used is styrene.
Patent GB-345450-A (GB)
Title: Rocking joint for axle or shaft ends
IPC: F16D3/221
Filed: 1930-02-25
Abstract: 345,450. Universal joints ; differential gearing. GAZDA, A., Arsenal, Object XIX, Vienna. Feb. 25, 1930, No. 6285. Convention date, Feb. 28, 1929. Addition to 312,903, [Class 80 (ii), Gearing, Variablespeed &c.]. [Class 80 (ii).] In the universal joint for motor-vehicle &c. shafts and differential gears described in the parent Specification, the split ball-end of the shaft is replaced by two blade-springs 6, 61, of sufficient torsional rigidity, carrying at their ends the driving pins or balls 5, 5<1>, which are pressed apart by the springs into longitudinal grooves 3, 31 of the part 2. The part 2 is shown carried by a fly-wheel shaft 1, the balls 5, 5<1> being received in bearing-members 8, 8<1> secured by coned extensions in like apertures in the springs. The springs are riveted to segments 7 secured in the hollow shaft 4, a flexible sheath 11 extending between the parts 2, 4. A spring 10 presses on the bearing-members 8, 81.
Patent GB-267916-A (GB)
Title: Improvements in or relating to the elimination of disturbing waves or oscillations in alternating current electrical circuits
IPC: H03H2/00
Filed: 1927-03-07
Abstract: 267,916. Lorenz Akt.-Ges., C. March 19, 1926, [Convention date]. Filter, rejector, and like circuits; harmonics, absorbing. - in order to eliminate harmonics or other undesired oscillations with maximum efficiency, an acceptor circuit is shunted by a rejector circuit, both being tuned to the fundamental, and the remainder of the circuit to which these are connected is preferably tuned to the same frequency. Thus an output circuit II, Fig. 2, may be freed from the harmonics supplied by a high-frequency generator 1 by means of a shunt rejector circuit 5, 6, which is connected at points A, B, the voltage between which is in phase with the current in the circuit 3, 7; the combinations 1, 2, and 3, 7, (and consequently the whole circuit 1, 2, 3, 7) are both tuned to the fundamental. In the transmitting aerial shown in Fig. 3, the acceptor combinations comprise respectively the parts 4, 8, and the aerial inductance 9 and natural capacity of the aerial, the rejector circuit 5, 6, being connected as before. The rejector circuit preferably has a large capacity and small inductance, in order that harmonics may be effectively shortcircuited. The inductance may comprise a number of single turns connected in parallel composed of either solid or stranded wires, and twisted together if desired.
Patent GB-361754-A (GB)
Title: Improvements in centrifugal separators
IPC: B04B9/12
Filed: 1931-03-02
Abstract: 361,754. Centrifugal m a c h i n e s. AKTIEBOLAGET SEPARATOR, 8, Flemmingatan, Stockholm. March 2, 1931, No. 6437. Convention date, Nov. 8, 1930. [Class 23.] The drum of a centrifugal separator is carried by a hollow shaft 3 the lower end of which is supported in a bearing 2 in the frame 1. Liquid for treatment is supplied through the pipe 5 and the shaft 3 to the drum. The end of the shaft 3 is embraced by the tightening device 4 and it is pressed to make a tight joint with the frame to prevent any leakage of the liquid supplied by the pipe 5. A collar 6 is fixed to the shaft 3 below the bearing 2 and covers a stationary collar 7 on the frame. Oil from a bath is thrown on to the bearing 2 by the gearing, and is prevented by the collar 6 from passing down the shaft. It is collected in the chamber 8 and conducted back to the bath by the channels 9. A collar 10 fixed to the frame or to the spindle is arranged above the bearing 2 to prevent too much oil from passing to it. A chamber 11 is provided between the tightening device 4 and the collars 6, 7 to trap any supplied liquid or oil which does leak by these devices ; the chamber 11 is drained by means of channels 12.
Patent GB-1415627-A (GB)
Title: Device for generating a flow of water in a swimming pool
IPC: A63B69/12
Filed: 1974-02-13
Abstract: 1415627 Massage appliances UNTERWASSER-ELECTRIC GmbH [trading as UWEUNTERWASSER - ELECTRIC GmbH & CO KG] 13 Feb 1974 [17 March 1973] 06468/ 74 Heading A5R [Also in Divisions A4 and Fl] A pump unit secured to the edge 2 of a swimming pool has pivotally adjustable nozzles 6, 9 issuing jets of water below the water level 4 for massaging purposes or to provide a stream for countercurrent swimming, a housing portion 5 being telescopically slidable relative to a top housing portion 1 to adjust the vertical spacing between the nozzles and the edge 2. A further housing portion 7 is pivotably adjustable relative to the housing portion 5 so that it can rest against the pool wall 3 despite irregularities in the latter. A strap 8 can be placed around a person standing in front of the nozzles 6, 9 for massage purposes. Switches 11, 12 switch the pump on and off, a lever 13 controls the admixture of air in the jets and a lever 14 controls the distribution of the water stream between the nozzles 6, 9.
Patent GB-983760-A (GB)
Title: Apparatus and method for separating particles in liquids
Inventor: ATHERTON EDWARD
IPC: B04B5/00
Filed: 1962-02-20
Abstract: 983,760. Centrifugal separators. IMPERIAL CHEMICAL INDUSTRIES Ltd. Jan. 31, 1963 [Feb. 20, 1962], No. 6548/62. Heading B2P. [Also in Division B8] A centrifuge for separating from one another particles of different size or mass suspended in a liquid comprises a hollow rotor A, Fig. 1, which is provided with an axial opening C for the introduction of the suspension while the rotor is rotated, and which is so shaped internally that the particles move under the combined influence of gravity and centrifugal force without obstruction by generally radially extending suspension-retaining surfaces of the rotor cavity, particles together with accompanying liquid being progressively withdrawn from the free surface of the suspension in the rotating rotor by means of an independent probe D which is introduced through the opening C and is moved at decreasing speed into contact with the suspension free surface as the latter gradually recedes during the removal of liquid and particles. The suspension may be fed into the rotor cavity so that it eventually comes into direct contact with the axial wall thereof or it may be injected against the rear wall of the cavity by means of a hypodermic syringe so that it flows outwards to form an even layer on the free surface of a liquid of higher density already present in the rotor. The rotor A may be made of a transparent material, such as polymethyl methacrylate resin, and is attached to the shaft B of an electric motor. The probe D is moved laterally into contact with the suspension by means of a cam E and consists of a bent right-angled steel tube, the extremity of which is bent and cut at an angle to skim off the surface of the suspension which is removed from the probe by suction into a vessel H. In a modification the bent tube is rotated about an axis parallel to but spaced from the rotor axis. In Fig. 4 the cavity of the rotor is bounded by parallel surfaces A, B which are generated by rotation, about the rotor axis, of curves having, or closely approximating to, equations in the form of y=k log x wherein k is a constant depending on the physical dimensions and speed of the rotor and y and x are co-ordinates in the axial and radial directions of the rotor. It is stated that in such a rotor the particles of the suspension move along paths which are at all points parallel to the surfaces A, B and have no tendency to settle against these surfaces. The probe is in the form of a tube C (with its end cut at an angle) which is moved into and out of the cavity by a cam acting on a sliding holder for the tube. The rotor axis may be at any angle to the horizontal. Applications of the centrifuge include the determination of size distributions of suspensions of particles, e.g. pigments, in liquids and the preparation of small quantities of particle dispersions in which the particles are of known size within very close limits. Examples of these applications are given. Dimensions of the apparatus are also given.
Patent GB-1073545-A (GB)
Title: Improvements relating to golf ball teeing devices
IPC: A63B57/00
Filed: 1965-02-16
Abstract: A golf ball teeing device comprises a magazine of tubular or channel form for the balls detachably mounted on a horizontal support so as to be slightly inclined to the horizontal, the support also mounting a tee, and a stop mechanism adjacent the outlet of the magazine, the stop being operable by the player's foot or club to allow balls to exit from the magazine singly, and to roll along a track on the support to the tee.  The horizontal support surface may be provided with spikes for insertion into the ground.  The stop comprises a pair of parts arranged so that one part is normally located to prevent flow of balls from the magazine and when moved to allow flow of a first ball along the track the second part is moved to a position behind the first ball and prevents subsequent balls moving, return of the parts allowing the second ball to move up to a position against the first part ready for a repeat operation.