baber/WOPTO huggingface dataset:
Patent GB-537359-A (GB)
Title: Improvements in or relating to friction clutches
IPC: F16D13/71
Filed: 1940-04-30
Abstract: 537,359. Friction clutches. BORG & BECK CO., Ltd. April 30, 1940, No. 7740. Convention date, June 3, 1939. [Class 80 (ii)] Relates to friction clutches comprising a driving member 9, a driven plate, a presser plate 17 and an enclosing cover 10, the clutch engaging spring consisting of a spring sheet metal annulus 21 which bears on levers 20 which extend through and fulcrum in openings 22 in the cover 10. According to the invention the cover 10 has a reentrant portion 15, 16, one periphery of the spring 21 engaging such portion and the other periphery engaging the levers 20 which at their outer ends bear on the presser plate 17. Each lever 20 is maintained against displacement by a pair of wings 33 and a lug 34, and each may have a reinforcing web 25. An oil baffle plate 36, such as described in Specification 495,691 may be held between the spring 21 and the levers 20. Flexible links 38, Fig. 3, form a driving connection between the cover 10 and presser plate 17. If they are preformed so as to urge the presser plate into the disengaged position the clips 49, Fig. 2, may be omitted. In a modification the inner periphery of the clutch spring 21 engages the cover and the outer periphery engages the levers 20. The spring 21 may be of the type described in Specification 533,506. For another modification hardened fulcrum pins are inserted between the levers 20 and the cover 10.
Patent GB-317868-A (GB)
Title: Improvements in processes of and apparatus for converting heavy mineral oils into lower boiling products
IPC: C10G9/00
Filed: 1928-03-14
Abstract: 317,868. Leamon, W. G. March 14, 1928. Hydrocarbons, cracking. - Mineral oils are cracked by vapourizing in a coil 16 of a pipe still, settling in a baffle chamber 19 and a rotary separator 24, rapidly heating in a coil 17 of the pipe still to a temperature above cracking temperature, not more than about half the total cracking occurring at this stage, and then passing the vapours to a cracking chamber 28 wherein cracking is effected substantially wholly by the superheat of the vapours, after which the products pass to heat exchangers 15, 14 where the crude oil from a reservoir 10 is preheated, thence to a dephlegmator 35, and a condenser 38, condensates passing to reservoirs 10, 39 respectively, some of the condensate from receiver 39 being pumped into the dephlegmator 35 by a pump 41. The cracking chamber 28 may contain refractory porous adsorptive contact material which is inert to sulphur and nitrogen, e.g. amorphous and colloidal silica and silicerous compounds such as pumice, silica-gel, diatomaceous silica &c. The heating in coil 16 may be omitted if the preheating in exchangers 14, 15 is sufficient, and the temperature of the cracking chamber may be controlled automatically, variation of pressure controlling the supply of fuel or the supply of crude oil.
Patent GB-939352-A (GB)
Title: Improvements in rotary hoes for agricultural tractors
IPC: B62D51/06
Filed: 1961-03-03
Abstract: 939,352. Agricultural implements. HOLDER G.m.b.H. GRUNBACH. March 3, 1961 [April 1, 1960], No. 7795/61. Class 6(1). A rotary hoe which may be mounted to one side of or directly behind a tractor comprises hoes 253 mounted on a tube 25 driven by a shaft 251 which is driven by chain gearing in a casing 23 from a shaft 221 which is driven by bevel gearing 213 from a tractor shaft 212. The shaft 251 and tube 25 are mounted between the casing 23 and a plate 24 and the shaft 221 is enclosed by two tubes 22 having flanges 222 so arranged that the gear casing 211 may be fitted between the flanges 222. A slide shoe 26 is provided through which an adjustable brake skid extends. In a modification the shaft 221 extends across the full length of the tubes 22 so that the hoe may extend on either side of the tractor.
Patent GB-990268-A (GB)
Title: Fog reduction in photographic silver halide emulsions
Inventor: DERSCH FRITZ
IPC: G03C1/34
Filed: 1962-02-28
Abstract: 990,268. Anti-foggants for silver halide materials. GENERAL ANILINE & FILM CORPORATION. Feb. 28,1962 [March 14, 1961], No. 7812/62. Heading G2C. Photographic silver halide emulsions are developed in the presence of an antifoggant of the general formula:- wherein R 1 , R 2  and R 3  are alkyl,aryl or substituted aryl groups and X is chlorine, bromine or iodine. The antifoggants may be incorporated in the silver halide emulsion layer or a layer adjacent thereto, or added to the developing solution. The groups R 1 , R 2  and R 3  may be methyl, ethyl, propyl, butyl, amyl, hexyl, heptyl, undecyl, dodecyl, phenyl, tolyl, naphthyl, or phenyl substituted by a hydroxy, carboxy, bromo, amino, acylamino or alkoxy group.
Patent GB-579687-A (GB)
Title: Improvements in or relating to electrical communication systems
IPC: H03K7/08
Filed: 1944-04-27
Abstract: 579,687. Pulse modulation. SIEMENS BROS. & CO., Ltd., REED, M., and PARKS, G. H. April 27, 1944, No. 7888. [Class 40 (v)] Rectangular pulses generated by a pentode valve circuit are modulated in width or duration by a signal voltage applied to the control grid. The positive terminal HT + of the hightension source is connected to the anode of the valve through a resistance R1, to the screengrid through a resistance R4, and to the control grid through a resistance R5 in series with the secondary of a transformer T fed from the signal source. The negative terminal HT - is connected to the cathode through bias resistance R2 and to the suppresser grid through resistance R3. A condenser C1 couples the anode to the control grid. Synchronizing signals at pulse frequency are fed at the terminal S through a differentiating circuit C2, R3 to the suppresser grid, and the modulated pulses are taken from a terminal O connected to the screen grid. Before the application of a synchronizing pulse, screen current passing through resistance R2 produces a bias between cathode and suppresser grid which blocks anode current. The pulse at S drives the suppresser grid positive and starts anode current, and the resultant fall in anode voltage is transmitted through the condenser Cl to the control grid. The screen current falls sharply and the screen voltage rises, giving a positive output pulse at terminal O which lasts for a time dependent on circuit constants and on the standing potential on the control grid. As the latter varies with the signal voltage applied through the transformer T the pulse duration is correspondingly varied. In an alternative arrangement, negative synchronizing pulses are applied to the control grid.
Patent GB-235507-A (GB)
Title: Improvements in machines for gauging rollers
IPC: B07C5/06
Filed: 1925-03-25
Abstract: 235,507. Skerrett, H. N., (Timken Roller Bearing Co.). March 25, 1925. Surface and outline gauges. - A machine is arranged to gauge taper rollers for size, taper and out-of-roundness at one handling and one setting, and is adapted for use with rollers of various sizes. The roller 11 to be gauged is placed on a block 10 mounted on an adjustable support 9, and is engaged by a pair of contact levers 36 which are pivoted on a spindle 37 and actuate separate Indicating pointers 69 through arms 59, 65 and sector-andpinion gearing 63, 66. The roller 11 is rotated while being gauged by a roll 26 on a spindle 23 which is driven by a belt 28. The bracket 21 carrying the spindle 23 is pivoted on a pin 20 so that it may be dropped against a stop 27 to allow rollers to be changed. The spacing of the levers 36 on the spindle 37 may be adjusted by a knob 40. Each lever 36 is fitted with diamond contact points 48 carried by adjustable springs 47, and diamond contacts 19 are provided on the gauging block 10. In use, a block 10 suitable for the size of roller to be gauged is flitted to the support 9, and the parts are adjusted so that when a roller of standard size and shape is in position, the pointers 69 both point to zero on a common scale. When a roller is now gauged, incorrect size and incorrect taper are indicated by movements of the pointers, and out-of-roundness by vibration of the pointers while the roller is being rotated. A pin and spring connection 61, 60 is provided in the gearing to the pointers to prevent damage in case of mishandling.
Patent GB-1102422-A (GB)
Title: Improvements in liquid-cooled, liquid-moderated nuclear reactors
Inventor: WORLEY NORMAN GEORGE
IPC: G21C19/307
Filed: 1965-02-24
Abstract: 1,102,422. Reactors. BABCOCK & WILCOX Ltd. 24 Feb., 1966 [24 Feb., 1965], No. 8018/65. Heading G6C. In a liquid-cooled, liquid-moderated reactor a primary coolant flows from the reactor core to a main heat exchanger via an auxiliary heat exchanger operating at a lower temperature than the primary coolant so that radio-active deposits settle on the auxiliary heat exchanger, means being provided whereby the radioactive deposits may be removed from the coolant circuit. In particular, a pressurized water reactor has disposed in its coolant circuit on the downstream side of the reactor core an auxiliary heat-exchanger which is considerably smaller than the main heat-exchanger and which is mounted so as to form a unit that is readily removable from the coolant circuit. The temperature of the primary coolant after its passage through the reactor core is in the region of 520‹ F. and that of the secondary coolant flowing into the auxiliary heat exchanger is in the region of 400‹ to 450‹ F., so that when the primary coolant comes into contact with the heat-exchange surfaces of the auxiliary heat exchanger, there is a tendency arising from the temperature difference for radioactive dispersals carried away by the coolant in its passage from the core to be deposited on these surfaces. The radioactive dispersals appear to arise from impurities in the water activated by passage through the reactor. When the deposits reach a predetermined value which may be biologically unsafe, the unit including the auxiliary heat exchanger is withdrawn by temporarily shutting down the reactor and isolating that section of the coolant circuit in which the auxiliary heat exchanger is located. In a modification, the auxiliary heat exchanger not readily removable but is readily accessible to permit removal of the radioactive deposits by a cleaning process. Alternatively, the auxiliary heat-exchanger is housed in a by-pass circuit formed in the coolant circuit which can be isolated for effecting removal or cleaning of the auxiliary heat exchanger.
Patent GB-558056-A (GB)
Title: Improvements in or relating to cockpit and like covers for aircraft
IPC: B64C1/14
Filed: 1942-06-11
Abstract: 558,056. Aircraft cock-pit hoods. REID & SIGRIST, Ltd., and BOWER, C. June 11, 1942, No. 8020. [Class 4] A horizontally-sliding cockpit cover &c. is adjusted by means of a transverse shaft 16, Fig. 4, operatively connected to both sides of the cover so that the sides are moved through equal distances. The margins 12 of the sides 13 of the cover have fixed to them rollerchains 14 engaged by gear wheels 18 on the shaft 16, which driven by a chain 20 and wheel 19. A plunger 23 normally locks wheel 18 by engaging in one of holes 24 in the wheel 18 (and so holding the cover against movement), but is withdrawn upon operation of the driving-shaft 16 ; a fork 22 is secured to the plunger 23 and engaged in a groove 21 of a sleeve 20a fast with wheel 19, driving of the shaft 16 being effected by rotation of the wheel 19 and sleeve 20a acting upon a pin 27 fixed to the shaft, a side of a hole 28 in the sleeve first acting as a cam-surface to move the sleeve laterally to withdraw the locking plunger and then driving the shaft through the pin 27. In a modification the chain 14 is fixed on an inclined side of the cover, the wheel 18 being dished.
Patent GB-1427164-A (GB)
Title: Interference eliminating system for radars
IPC: G01S13/22
Filed: 1973-02-19
Abstract: 1427164 Pulse radar NIPPON ELECTRIC CO Ltd 19 Feb 1973 [19 Feb 1972] 8065/73 Heading H4D In a pulse radar producing wanted echo pulses d, Fig. 5, line 22, interference pulses e from an adjacent radar are suppressed by ranging the time intervals between successive transmitted pulses through a predetermined cycle of at least three different time intervals T1, T2, T3, Fig. 5, line 21, and applying the output from the radar receiver 13, Fig. 6, in parallel to: (1) three AND circuits 40, 42, 44 coupled to corresponding AND gates 41, 43, 45 which are respectively enabled during time intervals T3, T1, T2 by the outputs 30, 28, 29, Fig. 5, from a control signal generator 15; and (2) three delay channels 17, 18, 19 each comprising an input AND gate coupled to two series connected first and second delay circuits whose outputs are coupled as shown to the AND circuits 40, 42, 44 such that in the nth delay channel (n = 1, 2 or 3) the input AND gate is enabled during time internal Tn by the generator 15 and the delay periods of the first and second delay circuits are Tn and T(n + 1) respectively. Thus during time interval T3 the signals applied to AND circuit 40 are as shown at 23, Fig. 5, from which it is seen that only the wanted pulses dl, d2 and d3 coincide to produce a resultant output pulse; a corresponding process occurs during the other time intervals T1 and T2, the resultant combined outputs from the three AND gates 41, 43, 45 being shown at Fig. 5, line 24. If an adjacent radar operates with the same time intervals but in a different sequence, e.g. T1, T3, T2, Fig. 5, line 25, mutual interference between the two radars is prevented.
Patent GB-1138658-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B9/70
Filed: 1966-02-24
Abstract: 1,138,658. Cameras. EASTMAN KODAK CO. Feb.24, 1966 [March 4, 1965], No.8103/66. Heading G2A. Cameras comprise an electromagnetic transducer having a first member which moves in accordance with the scene brightness, and a second reciprocable member movable to sense the position of the first member, and to close a switch operating an electrical warning signal when the first member is in a position corresponding to low brightness; provision may also be made for using and testing flash bulbs or flash units. As shown in Fig.l, the first member is a metal needle 9 of a galvanometer connected in a photo-electric circuit, and the second member is a cam 8, pivoted about a stud 8a, which senses the position of pointer 9, a clamp 12 (as described in Specification 1, 062,273) for needle 9 being mounted on cam 8. On partially depressing a release slide 1, cam 8 and slide 12 are moved upwards by a peg 5 bearing on a lever 6 until they meet the needle 9; when the needle is in the low brightness position it is clamped, by clamp 12, against a switch contact 14 thus completing a circuit containing a warning lamp 16, an image of which is transmitted to the camera viewfinder (61) by a light pipe 21, (Figs. 1A and 1B, not shown), which may have markings thereon for indicating the conditions encountered. On inserting a flash-bulb (50) into a holder 32 having contacts 32a, 32b, a lever 20 is depressed opening a switch in the circuit containing the warning light 16; on partially depressing release slide 1, an element 30 on cam 8 engages a switch contact 26 completing a circuit containing a lamp 27 which lights up indicating that a flash-bulb (50) in working order is in the socket 32, an image of the lamp being transmitted to the viewfinder (61) by a light pipe 29 (Figs. 1A and 1B, not shown); the resistance of lamp 27 is sufficiently high to prevent the flash-bulb firing. On further depressing release slide 1, the camera shutter is actuated and a contact 34 is rotated by a mechanical linkage (not shown) to make contact with a terminal 35 shorting out the lamp 27 and causing the flash-bulb (50) to fire. In Figs. 3 and 4 (not shown), the clamping means 12 is replaced by a shorter clamping means (42) which only engages the needle when it is not in the low brightness position, the warning light is actuated by an abutment 43 of the slide 42 contacted a contact switch 44, and the flash-bulb operated switch 18 is eliminated. The circuit used may be modified so that a single bulb is used in place of bulbs 16 and 27 Figs. 5 and 6 (not shown), or a relay mechanism used in the circuit so that lamp 27 is illuminated only when both a flash-bulb in working order is in the socket and the battery has sufficient power Fig. 7 (not shown). Other warning signals (e.g. a buzzer) may be used in place of, or in addition to the lamp.
Patent GB-833305-A (GB)
Title: Roebel conductor-halves insulation
IPC: H02K3/14
Filed: 1958-03-13
Abstract: 833,305. Insulation for conductors of dynamoelectric machines. BROWN, BOVERI & CIE A.G. March 13, 1958 [March 13, 1957], No. 8126/58. Class 35. An insulating member 3 for separating the halves 1, 2 of a Roebel bar is rebated at 4, 5 to accommodate the inwardly bent parts of cranked insulation caps 6, 7 separating the transition conductors 1-2 from the other conductors. The insulating member 3 may be fabricated of three separate insulating strips.
Patent GB-608835-A (GB)
Title: Polystyrene composition and methods of making the same
IPC: C08K5/01
Filed: 1946-03-15
Abstract: Dimers of 1,2-dihydronaphthalene prepared by treating the monomer with sulphuric acid of 75 to 85 per cent strength at a temperature ranging from 20 DEG  to 200 DEG  C. are mixed with a solid polystyrene having a molecular weight lying between 60,000 and 120,000 to give a composition which is solid at room temperatures. The dimer may be liquid, crystalline or a mixture of these.  U.S.A. Specification 2,168,011 is referred to.
Patent GB-929644-A (GB)
Title: Improvements relating to the treatment of metallic surfaces
IPC: B05D3/10
Filed: 1962-03-02
Abstract: A metallic surface is chemically treated or provided with a phosphate, chromate or oxalate coating, then rinsed with an aqueous alkaline solution having a pH greater than 7 but not more than 11, and finally coated with an aqueous solution or dispersion of a synthetic resin.  The chemical treatment may comprise rinsing with phosphoric or a mixture of chromic and phosphoric acids: the alkaline rinse preferably contains ammonia or a volatile amine such as diethylamine, triethylamine, triethanolamine, morpholine, cyclohexylamine, dicyclohexylamine, aminopropanol, amino-iso-butanol or polyethyleneimine, and the pH of the solution is preferably above 8,5; the solution may also contain corrosion inhibitors such as phosphates, phosphoric acid esters or fatty acids, and wetting agents and/or alcohols.  The rinse may be applied by dipping, flooding or spraying, may be at an elevated temperature, and the metal may be dried in an oven.  The final coating may be an aqueous solution of an alkyd resin modified with a phenolic resin applied by spraying and stoved.ALSO:A metallic surface is chemically treated or provided with a phosphate, chromate or oxalate coating, then rinsed with an aqueous alkaline solution having a pH greater than 7 but not more than 11, and finally coated with an aqueous solution or dispersion of a synthetic resin.  The chemical treatment may comprise rinsing with phosphoric or a mixture of chromic and phosphoric acids: the alkaline rinse preferably contains ammonia or a volatile amine such as diethylamine, triethylamine, triethanolamine, morpholine, cyclohexylamine, dicyclohexylamine, aminopropanol, amino-iso-butanol or polyethyleneimine, and the pH of the solution is preferably above 8.5; the solution may also contain corrosion inhibitors such as phosphates, phosphoric acid esters or fatty acids, and wetting agents and/or alcohols.  The rinse may be applied by dipping, flooding or spraying, may be at an elevated temperature, and the metal may be dried in an oven.  The final coating may be an aqueous solution of an alkyd resin modified with a phenolic resin applied by spraying and stoved.
Patent GB-622558-A (GB)
Title: Internally threaded split rings
IPC: B21K1/70
Filed: 1947-03-26
Abstract: 622,558. Making nuts. SECURIT'S E.D.L.C. March 26, 1947, No. 8270. Convention date, April 4, 1946. [Classes 83 (ii) and 83 (iv)] Forging screw-threads; angular bending &c.- An internally-threaded split-ring with external taper and flats for a lock-nut is made by forging in dies 3, 4, a flat blank 1 to form a thread 4a on one side and flats 1b on the other. The blank is then bent to semi-circular form in dies, Fig. 3, (not shown), which complete the forming of the thread and flats, and is then bent around a screwed mandrel by vertically and horizontallyreciprocated dies. The rings may be made singly or in pairs which are subsequently split.
Patent GB-868377-A (GB)
Title: Improvements in or relating to organo-siloxane compositions
Inventor: RILEY IVOR HAROLD
IPC: C08K5/14
Filed: 1958-03-14
Abstract: In curing a silicone rubber-forming composition in two stages, a composition comprising a mixture of a siloxane convertible to the solid, elastic state, one or more fillers and 2 vulcanizing agents having a difference of at least 20 DEG C. between the temperatures at which free radical reactions between themselves and the siloxane are initiated, is partially cured throughout its volume by raising the whole composition to a temperature sufficiently high to activate the vulcanizing agent with the lower reaction temperature, stored in the semi-cured state, and finally completely cured by heating at a temperature sufficiently high to activate the second vulcanizing agent.  Specified components of the composition are:-siloxanes-having a viscosity of at least 1000cs. at 25 DEG C. and a R/Si ratio of 1,9 to 2,01 : 1, wherein R is an alkyl, alkenyl, cycloaliphatic, aryl, polyfluoro-aliphatic or a halogenated alkyl or aryl radical; fillers-clay, diatomaceous earth, crushed quartz, silica (fume, aerogel and xerogel), barium zirconate, TiO2, ZnO, Fe2O3, ZrO, C black, glass flock, asbestos, cork, wood flour and organic fibrous materials; vulcanizing agents-(110 DEG -130 DEG C.) benzoyl- and 2 : 4-dichlorobenzoyl-peroxides; (about 150 DEG C.) di-t-butyl- and dicumyl-peroxides and t-butyl perbenzoate.  The peroxides may be used as dispersions in dimethylpolysiloxane oils.  Examples are given. Uses: for making sheet material and for coating base material for making insulating tapes.  Specifications 685,664, 715,181 and 792,041 are referred to.
Patent GB-798144-A (GB)
Title: Method of and apparatus for optically detecting the presence of solid material in transparent liquids
Inventor: CLEMENTS MAURICE
IPC: G01N21/90
Filed: 1956-03-16
Abstract: 798,144. Turbidometers. GENERAL ELECTRIC CO., Ltd. Feb. 7, 1957 [March 16, 1956], No. 8363/56. Class 97(3) Solid particle impurities in a transparent liquid in a transparent container are detected by spinning the container in one direction to cause the liquid to swirl round therein and then rotating it relatively slowly in the opposite direction in a light beam whereby the impurities even if, initially, on the bottom of the container, may be observed and distinguished from, for example, particles on the outside of the container. In the form illustrated each liquid container is an ampoule 9, Fig. 2, secured. by spring clips 23 in a tubular nolder 8 rotatable by a wheel 11 in a bearing 7 carried on a travelling band 4. At one point in the travel of the band the wheel 11 is moved into contact with a motor driven rubber tyred wheel 14 being held into contact therewith by an idler wheel 17. At a later point in the travel the wheel 11 encountered a friction pad 24, Fig. 3, which, as a result of the travel, rotates the ampoule and its holder in a direction arranged to be the reverse of that produced by the wheel 14. At this point the ampoule is illuminated by a sodium vapour lamp 25 and observed through a lens 32. The axis of the ampoule is slightly inclined to avoid distracting reflections from the glass. Shields 30, 31 confine the light from the lamp. A dark background for observation is provided by a shiny black screen 28 and a matt black screen 29.