baber/WOPTO huggingface dataset:
Patent GB-1414924-A (GB)
Title: Method of preparing thermostable block-copolymers
IPC: C08F297/04
Filed: 1973-05-10
Abstract: 1414924 Alpha methyl styrene block copolymerization VORONEZHSKY FILIAL VSESOJUZNOGO NAUCHNO-ISSLEDOVATELSKOGO INSTITUTA SINTETICHESKOGO KAUCHUKA IMENIAKADEMIKA 10 May 1973 22412/73 Heading C3P Thermostable block copolymers of the formula A, B, C, where A is a polyalphamethylstyrene block, B is a polyconjugated dione block and C is a polystyrene block, are obtained by a threestage sequential process effected in the presence of sec.-butyl lithium initiator, the initial polymerization of alphamethylstyrene being effected in the monomer itself or in a hydrocarbon solvent at 0‹ to 40‹ C., the subsequent stages forming the B and C blocks being effected in a hydrocarbon solvent at 40‹ to 80‹ C. The latter two stages may be carried out by sequential addition of the diene and later the styrene or by addition of a mixture of the monomers, with the diene being polymerized at 40‹ to 60‹ C. and the styrene subsequently at 60‹ to 80‹ C. The dienes are suitably butadiene or isoprene. The microstructure of the dione portions of the products is predominantly 1,4- with, in examples, about 8 to 12% 1,2-units and approximately equal amounts of cis- and trans-1,4-units. The monomers and solvents are desirably purified, e.g. by titration with the butyl lithium or with dilithiopolydienes.
Patent GB-1329061-A (GB)
Title: Automobile vehicles driven by a rotary piston engine
IPC: F16H57/02
Filed: 1971-04-19
Abstract: 1329061 Arrangement of power units SOC DE CONSTRUCTIONS MECANIQUES PANHARD & LEVASSOR 19 April 1971 [24 Feb 1970] 22461/71 Heading B7H In a vehicle power unit having a rotary piston engine 1 with a hollow output shaft 2 coupled via a variable ratio transmission mechanism 4 to two transmission shafts 5, 6, the shaft 5 is disposed coaxially within the output shaft. The unit may be transverse or longitudinal of the vehicle such that the shafts 5, 6 may drive, via wheels shafts 29 and 30, respective wheels of the same axle or different axles (Fig. 2, not shown). The housing 10 of a torque converter 8 is mounted on the output shaft and drives the impeller 11, a turbine 12 being fixed to the drive member 13 of a clutch 14 whose drive member is keyed to a shaft 16 which in turn drives the primary shaft 19 of a gear-box 9 through reduction pinions 17, 18. Forward speed pinions 20, 21 may be selectively keyed to the shaft 19 by a dog clutch 26 and mesh with pinions 22, 23 rigid with the differential housing 24. A reverse speed pinion 27 is also provided on shaft 19 to mesh with pinion 28 in the differential housing.
Patent GB-1110605-A (GB)
Title: Apparatus for folding and securing covers on boxes
IPC: B65B7/28
Filed: 1964-06-01
Abstract: 1,110,605. Packaging. G. H. GUILBERT, and H. ROBILLIARD. 9 Aug., 1965 [1 June, 1964], No. 22517/64. Heading B8C. An apparatus for folding and securing flat covers 8 on boxes 4, has a pair of bars 27 and a pair of angle-plates 33 spaced above the bars which overlie opposite edges of the cover 8 and fold the edges down as the box is raised past them and includes means for securing the covers of the box by staples, tacks, adhesive, heat sealing, crimpling &c. The boxes 4 are of tray form with pillars 7 at each corner and the covers 8 have holes 9 through which the pillars extend. The covers are placed on the boxes, which are gravity delivered end first to the apparatus 1 by a sloping conveyer 2. The edges of the covers pass between guides 22 and gluing rollers 17, 18, the roller 17 rotating when the box rotates free rollers 13. The box is moved on to the frame by motor-driven rollers 10, 11 and when it hits a stop 16, a switch 47 activates a pneumatic piston 24 which raises a stop 25 to prevent another box entering the apparatus. A pneumatic lift 26 then raises the box 4 on a platform 15 past the pair of bars 27, which fold two opposite sides of the cover down against the box. Each corner of the box then contacts an arm 31 of a bell-crank lever 28, causing the other arm 29 of the lever to fold the cover and form a gusset. The lower edges 34 of the pair of angle-plates 33 then fold down the cover flanges adjacent the box sides. The folds and gussets are pressed down at each corner by brushes (not shown). The plates 33 are pivoted and urged by springs 39 so to turn as the box 4 bears against the brushes 38 on the undersides of their inwardly directed bars (36), Fig. 2 (not shown), and press the flanges against the side of the box 4. As the box 4 rises above the plates 33, the plates are turned inwards by their springs to make ledges which retain the box when the platform 15 is lowered. When a second box is raised, it lifts the first box and when there are three boxes resting on the plates 33 the top box contacts a switch 48 which sends a signal to a pneumatic ram 41 connected to an ejector plate 42 which pushes the boxes on to a conveyer 6. Brushes 45, 48 serve to position the boxes in the frame 1. The apparatus is pneumatically controlled, the direction of travel of the ramp 26 being changed when it contacts a switch (not further described).
Patent GB-1045184-A (GB)
Title: Sensitisation of photographic silver halide emulsions
Inventor: GRABHOEFER HERBERT
IPC: C07F9/6574
Filed: 1964-06-01
Abstract: 1,045,184. Photographic silver halide materials and developers. AGFA A.G. June 1, 1964 [May 31, 1963], No. 22523/64. Heading G2C. Exposed silver halide emulsions layers in which the silver halide contains at least 50 mol per cent of silver bromide are developed in the presence of a condensation product of a compound of the formula: with at least one polyethyleneglycol having from 3 to 100 ethylene glycol units. The condensation product may be present in the silver halide layer or in the developer and increases the general sensitivity of the material.
Patent GB-693541-A (GB)
Title: Improvements relating to apparatus for removing solids from liquid fuel
Inventor: LOMBARDI MICHELE
IPC: B01D35/00
Filed: 1951-09-28
Abstract: 693,541. Gravity separation of solids from liquid fuel. DITTA FRATELLI LOMBARDI & DOTTI. Sept. 28, 1951, No. 22706/51. Class 46 [Also in Group XXVII] Apparatus for separating, by washing, solids from liquid fuel for internal combustion engines comprises a bowl 1 containing washing liquid 8 such as water and a cover 2 for the bowl affording a fuel inlet duct 3 communicating with a tube 5 which leads the fuel to be washed below the surface of the washing liquid, and an outlet duct 4. The tube 5 is preferably provided with wings or vanes 6 to reduce the velocity and upward flow of the fuel through the washing liquid. The cover 2 is detachably secured to the bowl 1 by a yoke 7, fastened to the cover and having a screw 7a and a nut 7b thereon to engage the bottom of the bowl. Solids heavier than the washing liquid 8 sink to the bottom of the bowl while solids lighter than the liquid 8 but heavier than the fuel float on the surface 10 of the liquid 8.
Patent GB-1134158-A (GB)
Title: Improvements in or relating to motor-driven toothbrushes
IPC: A61C17/34
Filed: 1967-05-16
Abstract: 1,134,158. Electric toothbrushes. BRAUN A.G. 16 May, 1967 [21 May, 1966], No. 22742/67. Heading A4K. In order to adjust the amplitude of the brushing stroke of an electric toothbrush the engagement between co-operating elements in the transmission from a crank drive to the brush shaft 5, (30) can be varied during use of the brush. In some forms (Figs. 4-6, not shown), the brush shaft 30, 36) is operated as a single or two-armed lever of variable mechanical advantage. As shown, a pin 21 is concentrically mounted on the spindle 18 of an electric motor 4 and rides in a groove 22 of a rocker arm 23 of an axle 24, supporting shaft 5. On moving plunger 16 from its dotted line position, the circuit of the motor 4 is completed through sliding contact of the end of wire 12 with contact spring 13 and pin 21 runs in the outer end of groove 22. As the pin 21 is moved towards the inner end of groove 22, by further depressing plunger 16, the amplitude of the brush stroke is increased. Springs 14, 15 return motor 4 to its original position, when plunger 16 is released.
Patent GB-1496722-A (GB)
Title: Anti-skid control system
IPC: B60T8/46
Filed: 1975-01-03
Abstract: 1496722 Anti-skid control valves JACOBS MFG CO 3 Jan 1975 [9 Jan 1974] 22750/77 Divided out of 1496721 Heading F2F A pneumatic vehicle brake system has a control valve module with an inlet 76 and an outlet 79 leading via a relay valve 74 to brake actuators 11, 11a. The flow passage through the valve module, via pressure-reducing valve seat 82, passage 85 and valve seat 86, is normally open. Skid conditions in either wheel are detected by sensors 21, 21a (which are the subjects of parent Specification) which allow air to flow through lines 101, 101a. Whether one or both sensors are operative, the result is that a pneumatic signal passes a shuttle valve 100, through passages 104, 105, to raise a piston 106, closing the valve seat 86, and venting the outlet passage 79 via the then open valve seat 107 and pressure relief valve 112. However a bleed 129 in the piston 106 ensures that the valve reverts to its open condition after a certain interval, so that braking is not permanently affected by a system failure. The pressure-reducing valve 83 is normally held open by diaphragms 115, 115a, but is urged to the closed positions to reduce the service pressure and save air, when the valve 87 is closed. In this condition, air from passage 85 enters opening 117 (which normally is connected to the vent passage 109) and passes via passages 118, 119, 123 to the piston 116 of the pressurereducing valve.
Patent GB-1055404-A (GB)
Title: Process for the polymerisation and copolymerisation of olefines
IPC: C08F210/18
Filed: 1965-05-28
Abstract: Olefines are homo- or co-polymerized with one another and/or with non-conjugated diolefines using as catalyst the product of reaction between a transition metal compound and a vinyl alcohol copolymer containing 1 to 20 molar per cent of vinyl alcohol in a polymerized state in its molecule, this product being activated by a metal, a hydride or an organometallic compound of a metal of Groups I to III of the French Standard Periodic Table, optionally with the addition of a halide of the Friedel-Crafts catalyst type. Preferred transition metal compounds are titanium and vanadium derivatives, e.g. TiCl4, Ti(OC2H5)3Cl, VOCl3, VCl5 and VO(OC4H9)3. Preferred activators are trialkylaluminiums and alkylaluminium halides or metallic aluminium may be used with aluminium chloride. In the examples: (a) an ethylene-vinyl acetate copolymer is hydrolysed and then reacted with TiCl4.  The product is then activated with Al(iC4H9)3 or Al(C2H5)2Cl and used to polymerize ethylene; (b) a vinyl chloride/vinyl acetate/vinyl alcohol copolymer is reacted with TiCl4 and activated with Al(nC3H7)3 or Al(C2H5)3 and then used to polymerize ethylene: (c) propylene is homopolymerized or copolymerized with ethylene using a catalyst as in (b) except that the activator is Al(C2H5)3 or Al(iC4H9)3 respectively; (d) a vulcanizable elastomer is formed by copolymerizing propylene with dicyclopentadiene using a catalyst as in (b) except that Al(iC4H9)3 is used and (e) ethylene, propylene and hexadiene-1,4 are terpolymerized using a catalyst as in (d).
Patent GB-1219726-A (GB)
Title: Improved leak detecting apparatus for valves
IPC: G01M3/28
Filed: 1969-05-05
Abstract: 1,219,726. Valves. M. H. GROVE, and J. M. EMERY, [trading as M. & J. DEVELOPMENT CO.]. 5 May, 1969 [7 May, 1968], No. 22786/69. Heading F2V. Leakage of fluid past the seals in a gate valve is detected by venting the upper part of the valve chamber for a predetermined time after the valve has closed, and then detecting any rise in pressure in the chamber. Pressureresponsive switch 22 and solenoid operated valve 21 communicate with the chamber through pipe 24 which extends through chamber wall 26. Timer 23 has a heated bi-metallic strip element 32 which operates change-over switch 34, and a switch 36 is closed automatically when the gate valve closes. In operation, closure of contacts 36 initially establishes circuits through element 32 and the solenoid of valve 21 which is thereby opened. After a time determined by element 32, switch 34 de-energises the solenoid and establishes a supply through line 45 to the contacts of switch 22 so that in the event of a pressure build up in the chamber, an indicator lamp 57 is energized through line 47 and circuit blocks 56, 52. A switch 61 shunted across switch 36 enables the apparatus to be cycled without moving the gate. Sixteen valves are connected to a common indicator lamp 57 which, with switch 54 closed, lights up for a fault in any of the valves. By opening switch 54 and operating stepping switch 58 the particular valve at fault can be identified. The gate valves are operated by pneumatic cylinders 11 controlled through relay valves 66, 74 and 74. Specification 1,188,153 is referred to.
Patent GB-792847-A (GB)
Title: Improvements in or relating to immersion brass finishing of zinc-alloy die-castings
Inventor: BAUMGARTEN STANISLAW
IPC: C23C18/48
Filed: 1955-08-08
Abstract: A solution for the immersion brass finishing of zinc-alloy die-castings comprises copper cyanide, an alkali-metal cyanide, zinc cyanide and ammonia.  If the reagents contain iron as an impurity, an addition of 1-5 gm. per litre of potassium sodium tartrate should be added.  Prior to immersion the castings may have an activating dip in 1 per cent or 5 per cent by volume solution of sulphuric acid and rinsed in cold water.  After brass finishing the work is alternately dipped in cold running water and in a nearly boiling saturated solution of hydrogen potassium tartrate and washed; or washed in cold running water and dried with a warm air blast.  Nickel may then be electrodeposited prior to which, after brass finishing, it is just cold washed, dipped for 1-2 seconds in a 2 per cent by volume H2SO4 solution and rinsed in running cold water.  The electrolytic solution should have a pH of 5.6.
Patent GB-1145406-A (GB)
Title: Electrical apparatus for producing ultrasonic power
Inventor: HOUGHTON RICHARD B
IPC: B06B1/06
Filed: 1966-05-23
Abstract: 1,145,406. Ultrasonic transducers. AEROJET-GENERAL CORP. 23 May, 1966, No. 22900/66. Heading H4J. [Also in Division H1] Ultrasonic power producing apparatus comprises a transducer element having a surrounding coating of epoxy resin which preloads such element throughout its entire surface area and has a coefficient of thermal expansion in the cured solid state of three to five times that of the element. The element may be of piezoelectric ceramic or magnetostrictive ferrite material. The magnetostrictive element may be annular (Fig. 3, not shown) or have a substantially elliptical and centrally located opening (Fig. 1). In manufacture, the element is sandblasted and then ultrasonically cleaned and dried. Epoxy resin is then painted on and cured in an oven at a temperature of 210‹ to 220‹ C. The epoxy resin is one that experiences less than 1% shrinkage during the curing step. The coated element delivers 4 to 5 times the rated power of a similar but uncoated element. In. operation, assuming that transistor 11 (Fig. 1) conducts more than transducer 12 (the transducers being not perfectly identical) an unbalanced current flows in primary winding 13. The unbalanced current causes a dimensional change in biased magnetostrictive element 10 which induces a current in secondary winding 16. Transistor 11 conducts fully while transistor 12 cuts off. A square current wave, and like magnetic field, is applied to element 10 which vibrates at its natural frequency. Element 10 displaces in the opposite direction and induces a reverse current in winding 16, thereby cutting off transistor 11 and causing transistor 12 to go into full conduction. The resonant cycle is continuously repeated. Capacitor 18 may be eliminated but then element 10 tends to oscillate at its lowest mode. Loading the element 10 by pressing on its end or immersing the end in liquid is equivalent to increasing the mass. The effective inductance in coil 16 is thereby increased, thereby lowering the resonant frequency of the circuit until a new equilibrium is reached.
Patent GB-604180-A (GB)
Title: Improvements in electric rectifying circuits employing indirectly heated tubes
IPC: H02M1/10
Filed: 1946-08-01
Abstract: 604,180. Rectifying. PHILIPS LAMPS, Ltd. Aug. 1, 1946, No. 22918. Convention date, Feb. 14, 1940. [Class 38 (ii)] In supplying a load such as the valve filaments K1 ... K4 of a radio receiver from A.C. supply mains 1, 2 through a rectifying valve G having an indirectly heated cathode, switch means t 1 , t 2  are provided whereby the cathodeheater is first connected across the mains, through resistance R 1 , and later when the cathode has reached operating temperature, is connected in series with the load. The switch means may comprise a thermal relay, the heating winding T of which is connected in one of the main supply leads. Alternatively, an electro-magnetic relay, the exciting winding of which is in series with the discharge path of the rectifier, may be used. The rectifier may also supply anode and screen grid voltages to the radio valves at terminals 3, 4 through a smoothing network C 1 , C 2 , L. As an alternative supply, high tension and low tension batteries may be connected at terminals 3, 4 and 5, 6 and the switch-means may be arranged to switch over from batteries to mains when the cathode of the mains rectifier valve reaches operating temperature, Fig. 2 (not shown). The arrangement may be also applied to battery charging.
Patent GB-813533-A (GB)
Title: Improvements relating to electric air break circuit breakers having arc-extinction chambers
IPC: H01H3/36
Filed: 1956-07-25
Abstract: 813,533. Insulators. ETABLISSEMENTS MERLIN & GERIN. July 25, 1956 [July 27, 1955], No. 22967/56. Class 36. [Also in Group XXXVII] An elliptical and preferably ethoxylin resin insulator has fixing studs 37, 38 embedded in the resin, as are locating pins 35, 36 and a fixing stud 34 for equipment such as a circuit-breaker arc-shoot assembly. Electrodes 39, 40 are also embedded in the insulators to equalize the positive and negative impulse flash over values.
Patent GB-405994-A (GB)
Title: An improved wall, partition or the like
IPC: E04B2/56
Filed: 1932-08-16
Abstract: 405,994. Walls ; slabs. CROSS, A. G., Escombe, Natal, South Africa. Aug. 16, 1932, No. 22987. [Classes 20 (iv) and 87 (i).] Walls comprise pre-cast slabs S tongued and grooved along their horizontal edges and having their vertical edges grooved, as shown in Fig. 2, so as to accommodate the flanges of vertical rolled steel frame members A and to provide a tapering space U converging towards the outside of the frame members for receiving mortar, and the inside faces of the slabs are hollowed and covered by a suitable covering, such as a layer D of plaster, panelling &c., in order to form cavities within the wall. To form cavity walls, two vertical structures are built up in this manner to provide a space between them, the hollowed faces of the slabs being arranged in opposed relation as shown in Figs. 9a and 10, but with no covering applied over them. The plaster layer D may be reinforced by wire mesh or expanded metal. At corners, the frame members may be of angle section. The slabs of a cross wall may be connected to a main wall by a flat bar R embedded in the mortar and projecting into grooves in the edges of the slabs as shown in Fig. 4, or the web of the frame bar A may project into these grooves for this purpose. A cross wall may, alternatively, be tied to the main wall by a metal tie F, Figs. 5 and 6, which is bent over the tongue of a slab in the main wall while the other end lies along, and is hooked into a slot Q in, the tongue H of the cross wall slab. The lintels of a door opening and the sill and head of a window opening are suitably tongued and grooved to engage the adjacent wall slabs, and the door jambs are dowelled at head and foot into the lintel and sill. For cavity walls, the frame members M may be of I-section, and a block or blocks P may be fixed as shown in Fig. 10 to prevent the escape of mortar into the cavity. In this construction, further vertical members V may be used at intervals to locate the ends of the slabs.
Patent GB-277015-A (GB)
Title: Improvements in or relating to induction meters
IPC: G01R11/185
Filed: 1927-09-01
Abstract: 277,015. Siemens - Schuckertwerke Akt.-Ges., (Assignees of Siemens-Schuckertwerke Ges.). Sept. 3, 1926, [Convention date]. Induction motor meters; temperature errors, compensating for.-An induction motor meter is corrected for temperature errors by forming at least one of the driving field paths partly of a heat alloy having a high negative temperature coefficient of permeability, such as an alloy of 30 parts of copper, 67 to 68 parts of nickel, and 2 to 3 parts of iron. In the construction shown in Fig. 1, angle parts w<1>, w<2> of the heat alloy are arranged on the pole of the pressure magnet S situated above the driving disc A. They form a portion of the path of the main current driving field Nh. In the construction shown in Fig. 4 a bracket w<3> of heat alloy is arranged in the path of the current driving flux, discs w<4> also being arranged between the pressure .core S and the back-closing bracket R in the path of the voltage driving field Ns. Either of the parts w<3>, w<4> may be used alone. Compensated voltage magnets are shown in Figs. 6 and, 7. An angle part w<6>, Fig. 6, of heat alloy may be mounted on the pressure core so that the pole face is widened towards the axis of the disc. Alternatively, a part w' of the heat alloy is inserted between the iron core S and the tongue Z projecting beneath the disc A, in the path of the total driving flux Ns. Specification 245,536 is referred to.
Patent GB-1323366-A (GB)
Title: Closed-loop control systems comprising a pid-controller
IPC: G05B13/02
Filed: 1971-04-19
Abstract: 1323366 Automatic control of air conditioning systems LANDIS & GYR AG 19 April 1971 [16 March 1970] 23026/71 Heading G3R A self-adapting PID control system for use with an air-conditioning system comprises a summing element 12 which receives the actual value x of a variable to be controlled and the desired value w of this variable, a variable gain amplifier 1, a delayed differentiator 2 which derives the time derivative x of the deviation signal W-X, a summing element 7 which receives the deviation signal and its time derivative and supplies a feedback signal to a summing element 5 via a control element B having a linear or non- linear characteristic, a summing element 3 receiving the deviation signal from element 12 and the output signal of element 7, and a PI- sub-controller 4 which includes an amplifier 9, integrator 10 and summing element 11, has constant parameters V R and Ti and is effectively responsive to the deviation signal and its timederivative, the output of element 11 being connected to a setting member (not shown) of the air conditioning control means and the amplification factor of amplifier 1 being automatically controlled by the element B in dependence on the time-derivative to automatically adapt the parameters of the control system to the air conditioning control means. The element B may be formed by an ohmic resistance with or without a series-connected diode or may comprise a voltage-dependent resistance or a frequencydependent impedance, the latter being formed by a delay member. The transmission function of the control system is derived and discussed, together with an analysis of the relationship between certain parameters of this function and the parameters of the control means. The specification also discusses the response of the control system, Fig.3, (not shown), and the variation of its relevant parameters for slowly or rapidly changing controlled variables.