baber/WOPTO huggingface dataset:
Patent GB-1479524-A (GB)
Title: Combination switches
IPC: G07C9/00
Filed: 1975-03-04
Abstract: 1479524 Permutation locks E O'HANLON 4 March 1975 8989/75 Heading E2A  A combination switch which controls an electric permutation lock and an alarm operates when its contacts are closed in a predetermined sequence with predetermined dwell times at certain switch positions and with predetermined transit times between positions. The switch 4, 16, 17, is of rotary ganged deck type. When the first digit (4) is dialled, contact is made on the first deck 4 so that a capacitor 6 is charged through resistor 7, and when the second digit (7) is dialled, contact is made through the second deck 16 to charge capacitor 14 through resistor 12 from the first condenser 6. Likewise at position (0) capacitor 21 is charged through resistor 19. In each case a preset dwell time is required to charge the condenser, and then delay of the charge takes place through leak resistors 9 and 15 respectively to ensure a transit time between steps. A false move of the switch rotor to position 3 or 8 (see Fig. 2, not shown) discharges the capacitors to earth and so prevents action of the circuit. The third capacitor 20 is connected to a transistor 28 which can control a switching rectifier 30 to energise light-emitting diodes 33, 34 to indicate that the combination has been successfully made. At the same time, diode 22 discharges capacitor 21 and transistors 37, 40, 43 and 52 act in sequence to energise a relay 56 whose contacts 57, 58 control an external circuit. Meanwhile capacitor 48 charges up to a potential at which it discharges through diode 53, and the ensuring pulse passes to transistors 54 and 61 to energise relay 65 a prescribed time after relay 56, to discharge diode 30 to prevent further action. A manual switch 73 provides a manual over-ride of the combination switch. It is described (Fig. 4, not shown) how the earth connection 8 in deck 17 may, instead, be connected to an alarm circuit (75). Alternatively (Fig. 5, also not shown) position (4) of deck 4 is also connected to an alarm circuit which is sensitive to several transient contacts such as an unauthorised tamperer might make while sweeping round the switch contacts. In a more complicated form (Fig. 6, not shown) two operators having different combinations are required, the correct dialling by the first one providing a set time period for operation by the second. Two identical dialling switch systems are ganged together arid their outputs are fed through a NAND gate (115) to secure operation of the system.
Patent GB-1464319-A (GB)
Title: Coupling hook
IPC: A01B59/00
Filed: 1975-03-05
Abstract: 1464319 Tractor quick hitch JEAN WALTERSCHEID GmbH 5 March 1975 [26 March 1974] 9089/75 Heading A1P [Also in Division E2] A quick hitch coupling hook comprises a hook body 2, a two armed catch element 3 pivotally attached to the body 2, an actuating lever 4, for releasing the catch element, pivoted to an arm of the catch element, and a spring 7 for biasing the lever 4. To release a coupling bolt 17 from the hook the actuating lever 4 is raised so separating a locking face 16 on the lever 4 from a fixed face 15 on the body 2. On further movement a release face 13 of the lever 4 abuts a curved face 4 on the body 2 which forms a fulcrum for the lever 4. The force is transmitted to the catch element 3 by a hinge bolt 9 so pivoting the element about a bearing bolt 19 such that the element 3 moves back into the hook body 2 and the bolt 17 can be removed. In this position the spring 7 biases the lever into a position where a limit stop face 18 abuts the fixed face 15. To engage the coupling bolt 17, the latter is inserted into a mouth 10 of the hook which acts to pivot the element 3 anti-clockwise so pulling the lever 4, such that the limit stop 18 separates from the face 15, until the spring 7 can bias the lever downwards into the position wherein the locking face 16 abuts the face 15, so locking the element 3 (as shown).
Patent GB-690822-A (GB)
Title: Improvements in or relating to screens and similar protective devices
Inventor: WARWICK KENNETH BERNARD
IPC: A61F9/06
Filed: 1950-04-13
Abstract: 690,822. Heat intercepting screens. KING, Ltd., G. W. March 8, 1951 [April 13, 1950], No. 9125/50. Class 51(ii) A protective screen intended for use in welding operations and adapted to be readily dismantled and reassembled comprises horizontal frame members 10, 12 and a bracing member 14 provided with bayonet fittings 15 rivetted thereto and engaging sockets 18 riveted to vertical frame members 11, 13, a set screw being provided at each joint to lock the same, and a fire resisting canvas or like cover 27 adapted to be tightened over the assembled frame by means of draw strings or the like in the hem of the cover which is kept taut by a tension member 30 attached to eyelets 29 provided in opposite edges of the said cover. Two or more frames may be pivotally connected together by co-operating cleat members 20, 21 and an appropriate number of triangular feet members 22 may be attached to vertical members 11 and 13 by bayonet joints 24. and cleat members 23, 25. The frame and foot members comprise angle iron sections and the joint members high duty aluminium die castings.
Patent GB-907000-A (GB)
Title: Improvements in and relating to liquid servo motors
Inventor: RUSSELL DEREK BARRY
IPC: F15B9/12
Filed: 1958-03-21
Abstract: 907,000. Liquid-pressure servomotor-control systems. ENGLISH ELECTRIC CO. Ltd. March 23, 1959 [March 21, 1958], No. 9206/58. Class 135. In a liquid-pressure servomotor for actuating, e.g., the speed controller on an A.C. mine winder motor, comprising an output piston 10 coupled to the driving shaft 29 of the speed controller and to a floating lever 13 to which is coupled a slide valve 12 and a control member 16 so that on movement of the control member the slide valve is moved to move the piston to a position corresponding to the position of the control member and on reaching that position the slide valve is returned to its closed position, pressure liquid is supplied to the servomotor by main and auxiliary pumps 18, 19 respectively, delivering simultaneously at the same pressure on the adjustment of pressure relief valves R 1 , R 2 . The capacity of the pump 18 is 20-10 times that of the pump 19 and at a predetermined point in the stroke of the piston a cam 31 on the shaft 29 engages a cam-follower to automatically open a valve 32 against its spring to unload the pump 18 so that the piston in the latter part of its stroke leftwards travels more slowly to reduce the speed of the speed controller. To ensure that the high inertia of the parts operated by the shaft 29 does not cause the piston to continue to travel at the same speed after the main pump 18 has been bypassed, a further cam 35 mounted on the shaft 29 momentarily closes a valve 34 to restrict flow to sump from the servomotor cylinder, flow then taking place through a small-bore pipe by-passing the valve 34. A non-return valve 33 prevents the pump 19 from discharging to exhaust when the pump 18 is unloaded and a non-return check valve 37 allows of independent adjustment of the pump pressures whilst both pumps are running.
Patent GB-1450988-A (GB)
Title: Driving arrangements employing leaf chain
IPC: F16H7/06
Filed: 1974-02-28
Abstract: 1450988 Chain gearing RENOLD Ltd 18 Feb 1975 [28 Feb 1974] 9221/74 Heading F2Q A limited torque, positive drive chain comprises interlaced leaf-chain links 10 of figure-ofeight configuration interconnected by bearing pins 11, the edges of each adjacent pair of leafchain links 10 being maintained in spaced apart relationship by spacing means disposed within the peripheral edges of the links. The spacing means may comprise washers 16, bulges 20, or lips 22. The chain passes around a pulley or drum 31 having a fluted periphery 32.
Patent GB-772446-A (GB)
Title: Production of piperidines
Filed: 1954-03-30
Abstract: Piperidines are obtained by reacting a compound containing an aldo- or keto-carbonyl group separated by a trimethylene group or a substituted trimethylene group from another aldo- or keto-carbonyl group simultaneously with ammonia or a primary amine and hydrogen. Preferred temperatures are in the range 100 DEG  to 200 DEG  C. and preferred pressures are in the range 1000-5000 lbs. per sq. inch. The reaction is preferably carried out in the presence of a hydrogenation catalyst comprising a metal of the iron group such as Raney nickel or Raney cobalt or a coating of nickel on a finely divided carrier made of silica, alumina or magnesia.  If desired, a solvent such as methylal, dioxane, methanol or 1.5-diaminopentane may be used.  Minor amounts of diamines and diols are formed during the reaction.  Suitable dicarbonyl compounds for use as starting materials include glutaraldehyde, 1-, 2- or 3-methyl glutaraldehyde, chloro-substituted glutaraldehydes, 1.5-aldehydo-ketones, e.g. 1.5-hexanonal, and diketones, e.g. 2.6-heptanedione and substituted 2.6-heptanediones.  When a primary amine is used as reactant it may be aliphatic, heterocyclic or aromatic.  Suitable amines are, for example, methylamine, ethylamine, ethanolamine, aniline or pyridylamine.  In the example, a mixture of glutaraldehyde, ammonia, Raney nickel and methanol is heated with hydrogen to give piperidine with some 1.5-diaminopentane and 1.5-dihydroxypentane.
Patent GB-1252351-A (GB)
Title: Improvements in or relating to aerodynamic and hydrodynamic machines, such as compressors, turbines and the like
IPC: F01D5/04
Filed: 1969-02-20
Abstract: 1,252,351. Centrifugal compressors; turbines. F. BOURQUARD. Feb.20, 1969 [July 9, 1968], No.9298/69. Headings F1C and F1T. In a aerodynamic or hydrodynamic machine such as a compressor, turbine or the like comprising blades or vanes mounted so as to rotate about an axis and integral or rigid with at least one of two side plates limiting the fluid stream laterally the side plate or plates with which the blades are integral or rigid is or are provided with recessed and protruding portions serving to vary, at a constant radial distance from the axis of rotation, the spacing between the side plates along the angular extent of the space between each blade or vane and the next and to equalize the mass rate of flow of fluid in each channel by uniformly distributing it over the angular extent. The invention is described as applied to a centrifugal compressor comprising impeller blades 21, Figs. 6, 7a, 7b, 7c and 7d, extending between front and rear shrouds 22, 23; Figs.7a, 7b, 7c and 7d being developed sections at the respective radii R 1 , R 2 , R 3  and R 4  in Fig. 6. Between the radii R 1  and R 2 , the shrouds 22, 23 change from the smooth contour shown in Fig.7a to the saw-tooth contour shown in Figs.7b and 7c. If intermediate short blades 26 are provided, each saw-tooth splits into two saw-teeth between the radii R 3  and R 4 , as shown in Fig. 7d. These two saw-teeth may be different from one another, whereby channel 37 may be wider than channel 38. Between radii R 4  and R 5 , the contour changes back to a smooth form. The saw-tooth contour provides a greater width of inter-blade flow passage adjacent the pressure sides 24 of the blades then adjacent the suction sides 25. This renders the mass flow constant along the circumferential extent of each flow passage, whereby noise and pulsations are reduced and efficiency is increased. As shown, each shroud 22, 23 may be made in two parts 22a, 22b or 23a, 23 b, only the parts 22 b, 23b being machined to provide the required contour. At least some of the blades may be integral with at least one of the shrouds.
Patent GB-566126-A (GB)
Title: Improvements in or relating to rotary fluid pressure motors pumps and the like
IPC: F04C2/36
Filed: 1943-06-10
Abstract: 566,126. Rotary engines. KEELAVITE CO., Ltd., and JOHNSON, E. H. June 10, 1943, No. 9342. [Class 110 (ii)] A rotary engine, pump or meter of the rotary abutment type has axial displacement means to vary the capacity of the working chamber. A driving shaft B is integral with a hub D<1> which has slots D<2> to provide for axial movement of the roots E<3> of the blades E<4>. The roots are wider than the blades, which extend across the annular working chamber C<1> formed by the face of the rotating ring D, the casing A, the circumferential wall C<3> and end face C<2> of the sliding part C. The blades E<4> are carried by a flange E<2> which is integral with a hollow shaft E<1>. An abutment G is mounted on a shaft parallel to the shaft B, gears H, H<1> coupling the shafts together. The abutment has recesses to allow passage of the blades and has sealing contact over an arc cut in the part C. A ring J surrounds the cylinder D closely so as to make a sealing fit with the outer circumferential surfaces of the blades. The ring has sealing contact J<1> with the casing A, and also with a plate K.
Patent GB-1158693-A (GB)
Title: Switching Means for Starting a Single-Phase Motor
IPC: H02P1/42
Filed: 1968-02-27
Abstract: 1,158,693. Control of A.C. motors. DANFOSS A/S. 27 Feb., 1968 [14 March, 1967], No. 9346/68. Heading H2J. [Also in Division H1] A thermostat 11 closes a main switch 5 to energize the main winding 3 of a single-phase motor, the current passing through an auxiliary winding 4 of the motor being reduced to a low value by resistor 6. The latter heats bimetals 8, 9, of which the element 8 deflects rapidly towards the right and engages the slower element 9 which moves in the same direction. The winding 4 is then fully energized to start the motor. The elements 8, 9, are further heated by the starting current until element 8 engages stop 10 to open the bimetal switch and reduce the current in the winding 4 to a low value. The bimetal switch remains open until the motor is switched off.
Patent GB-778579-A (GB)
Title: Improvements in or relating to sealing ends for high-tension electric cables
IPC: H02G15/06
Filed: 1956-03-27
Abstract: 778,579. Cable-end sleeves. PIRELLI SOC. PER AZIONI. March 27, 1956 [July 8, 1955], No. 9500/56. Class 36. A sealing end for a hightension cable, especially wherein the external insulator 3 is conical and which is suitable for insertion in an inverted position, comprises an insulating sleeve 2 fitted on the cable core 1 and an insulating support 9 shaped as a truncated cone. The support may be formed in one piece or in several portions held together by a binding of insulating material, may be perforated to allow passage of impregnating fluid and may be made of a thermosetting resin, preferably of the ethoxylinic or epoxy types, porous insulating material such as paper, glass fabric, silk, cotton or asbestos impregnated with a thermosetting resin, impregnated cardboard, porcelain or glass. The lower end of the support may rest. on or be integral with a cylinder 12 of the same material surrounding the cable core 1 and which may contain a stress-control ring 11, for example as described in Specification 755,374, which is electrically connected to the cable conductor.
Patent GB-632691-A (GB)
Title: Improvements in or relating to high-frequency coupling apparatus
IPC: H01J17/04
Filed: 1947-04-10
Abstract: 632,691. Glass-to-metal seals. WESTING. HOUSE ELECTRIC INTERNATIONAL CO. April 10, 1947, No. 9592. Convention date, March 29, 1943. [Class 36] [Also in Groups XL (a) and XL (c)] A glass window 99 for coupling electromagnetic waves between waveguides 91, 95 has the same coefficient of expansion as that of the metal supporting-plate 89. The metal plate is preferably of an iron-nickel-cobalt alloy and the glass a borosilicate. The edges of the aperture for the glass are rounded and oxidized. The glass is pressed into the aperture and while soft, the plate is turned to utilize the effect of gravity to position the surfaces of the glass in the same planes as the corresponding surfaces of the plate, molten glass being added or subtracted as necessary. A closer degree of uniformity may be obtained by grinding the glass after the seal is formed. The metal plate is maintained at such a temperature whilst forming the seal that the oxide partially dissolves in the glass. Specification 616,169 is referred to.
Patent GB-589803-A (GB)
Title: Improvements in or relating to a metal container, for example for beverages and to a method of manufacture thereof
IPC: B65D8/08
Filed: 1943-06-16
Abstract: 589,803. Metal casks; bushes. STEVENS, A. H. (Firestone Tire & Rubber Co.). June 16, 1943, No. 9665. [Class 21] [Also in Group XXII] A cask made of stainless steel or other metal comprises cup-shaped end portions 11, 12 butt welded to a central ring portion 13 provided with an opening to receive a section 5 secured to the outer end of a bung bushing 56. A reinforcing plate 59 of the same size and shape as the section 55 is secured to the inner end of the bushing, and the plate 59 and the section 55 are secured to the ring portion 13 around the opening. A reinforcing ring 57 may be positioned around the bushing 56. Steps or corrugations 18, 19 may be provided to strengthen the end portions 11, 12 and tapping means 24 may be mounted in the end portions.
Patent GB-308692-A (GB)
Title: Improvements in refrigerating methods and apparatus
IPC: F25B17/00
Filed: 1929-03-26
Abstract: 308,692. Deutsche Gasgluhlicht- Auer-Ges. March 26, 1928, [Convention date]. Refrigerating, absorption systems for. - The evaporator of a stationary machine working on the reversing system comprises a number of elements a - - g connected in such a manner that the liquefied refrigerant flowing from the condenser coil by a pipe 12, Fig. 2, enters the first element a and overflows to the next and so on, whereby any solvent carried over from the generator-absorber 7 is eventually collected within the last element g, from which it is returned to the generator-absorber. The elements may be formed by the turns of a horizontal coil 1, and are connected as shown to a header tube 4. The capacity of the evaporator is at least equal to the total quantity of condensed refrigerant. Where the generator-absorber is at a lower level than the evaporator, the solvent returns by gravity, but where, as shown, it is at a higher level, the solvent may be raised by the evolution of gas therefrom in the pipe 6 due to the heating effect of liquor circulated from and to the generator-absorber by way of a jacket 5 around the pipe 6. The gas evolved may be led to the separator proper 11 and thence to the condenser, but is preferably returned with the liquor through a pipe 15 to the generator-absorber. Alternatively, the pipe 6 may be heated by an external source. In another arrangement the gas generated in the generator-absorber is led into the pipe 6 so as to lift the solvent up to the ordinary separator. The machine is fitted with automatic or clock control of the heating means. The Specification, as open to inspection under Sect., 91 (3) (a) comprises also an evaporator formed of tubular members a-g, Fig. 2 (Cancelled) connected together by U-tubes 11, the solvent flowing by gravity through the pipe 6 from the last tube to the generator-absorber. This subject-matter does not appear in the Specification as accepted.
Patent GB-691482-A (GB)
Title: New colour lakes and process for colouring plastics therewith
IPC: C09B63/00
Filed: 1950-04-20
Abstract: Plastic materials such as polyethylene, polystyrene, phenol-formaldehyde, urea-formaldehyde, acrylate resins, and cellulose esters and ethers are coloured by incorporating a lake or rosinated lake of 1-(21-sulphophenylazo)-2-hydroxynaphthalene-3-carboxylic acid or 1-(51 - chloro - 21 - sulphophenylazo) - 2 - hydroxynaphthalene-3-carboxylic acid.  The mixing may be carried out by masticating the heated plastic with the lake, if desired, in the presence of a liquid such as alcohol, water or acetone.  A white pigment such as titanium oxide may also be included.  In examples: (5) the calcium lake of 1 - (21 - sulphophenylazo) - 2 - hydroxy - naphthalene - 3 - carboxylic acid is mixed with molten polyethylene; (6) the previous example is repeated using a mixture of the calcium lake and titanium dioxide; and (7) cellulose acetate is mixed with the calcium lake, with or without titanium dioxide, in the presence of dimethyl phthalate to which may be added alcohol, water or acetone to facilitate mixing.ALSO:The invention comprises the colour lakes, including the rosinated lakes, of 1-(21-sulphophenylazo) - 2 - hydroxynaphthalene - 3-carboxylic acid and its chloro-derivative in which the chlorine is in the 51-position of the phenyl nucleus.  The lakes may be made by treating the monoazo compound with a soluble salt of the laking metal, or the azo coupling may be carried out in the presence of a soluble salt of the metal.  A resin soap may be added before the salt of the metal.  In examples: (1) orthoanilic acid is diazotized and added to a solution of 2,3-hydroxynaphthoic acid in caustic soda solution, and a solution of calcium chloride is added to the suspension so obtained; (2) to a suspension of the dyestuff obtained as in (1) is added firstly a solution of Portuguese gum rosin in caustic soda and then a solution of calcium chloride, or strontium or barium chloride; (3) to a suspension of the dyestuff obtained as above is added a solution of Portuguese gum rosin and a solution of manganese chloride; (4) to a suspension of 1-(51-chloro - 21 - sulphophenyl) - 2 - hydroxynaphthalene-3-carboxylic acid is added a solution of Portuguese gum rosin and a solution of barium chloride.
Patent GB-377961-A (GB)
Title: Improvements in metal-working tools and methods of making the same
IPC: B23K31/02
Filed: 1931-03-31
Abstract: 377,961. Tools. FANSTEEL PRODUCTS CO., Inc., North Chicago, U.S.A. March 31, 1931, No. 9713. Convention date, Oct. 11, 1930. [Class 83 (iii).] A metal working tool is made of a bit 12 of refractory metal soldered &c. to a holder 11 of molybdenum tungsten or other metal with a coefficient of expansion equal to that of the bit. The holder 11 is then soldered &c. in a threesided recess 14 in a shank portion 13. Specification 345,171 is referred to.
Patent GB-480408-A (GB)
Title: Manufacture of new cellulose solutions
IPC: C08B1/00
Filed: 1937-04-06
Abstract: Cellulose is dissolved in an oxide of a tertiary amine, e.g., the oxide of trimethylamine, triethylamine, tripropylamine, monomethyldiethylamine, dimethyl - monoethylamine, or dimethyl - cyclohexylamine, or pyridine oxide.  The solutions may be precipitated as threads or films by means of water, alcohol, or dilute acid.  Specification 480,358 is referred to.