baber/WOPTO huggingface dataset:
Patent GB-876356-A (GB)
Title: Improvements in or relating to circuit arrangements for the measurement of peak voltages
IPC: G01R19/04
Filed: 1958-05-27
Abstract: 876,356. Peak voltage measurement. FERNSEH G.m.b.H. May 27, 1958 [May 27, 1957], No. 16830/58. Class 37. In an arrangement for measuring the peak voltage of a signal, a peak rectifier circuit, comprising rectifier 23, capacitor 24 and resistor 26, is fed with the output from a voltage controlled variable-gain component 20 to which the input signal is applied; and means are provided for varying the gain of the component 20 in accordance with the energy content of the signal whereby fluctuations in the measured peak voltage arising from variations in the signal energy content are obviated. The input signal, which may be a television video signal from which spurious signals arising during the flyback period are removed by known clamping and limiting circuits, is applied to the grid of amplifier valve 19 and the resulting output is fed by way of variable mu valve 20 to the peak rectifier circuit; the voltage developed across capacitor 24, providing a measure of the peak voltage input, being fed to a voltage indicating tube 25. Under valuation of peak voltage readings for input signals of low energy level, i.e. consisting of widely separated peaks, is obviated by effecting an appropriate increase in the gain of valve 20 by means of diodes 27, 28 and R.C. combination 30, 31, 32, whereby the voltage developed across capacitor 32 by low energy signals leaks away through resistor 31, between signal peaks, thus reducing the negative potential on the grid of valve 20 so that it operates on a steeper part of its characteristic.
Patent GB-708947-A (GB)
Title: Work-feeding means for tunnel kilns or ovens
IPC: F27D3/04
Filed: 1951-03-17
Abstract: 708,947. Tunnel kilns; bakers' ovens. DAVIES, W. G. O. July 16, 1952 [March 17, 1951], No. 16905/51. Class 51 (2). [Also in Group XXX] In a tunnel kiln for heat treating ceramic ware or metal articles or a bakers' oven having forward and return tracks d on which slide charge-carrying trays w, the return track being outside the kiln or oven, turntables a are provided at each end having radial arms b carrying a short length of track c, whereby the trays are transferred from one track to the other. The turntables a are actuated simultaneously by a driving shaft h through bevel gears i, shafts j, gear boxes k and pinions m engaging pinions n on the turntables. Pusher mechanism for both tracks comprises pivoted arms o carrying spring- loaded pawls r engaging transverse underside flanges y on the trays w through slots t cut in the arms b, the said arms o being connected by a link u with a ram r. The tracks d are of circular cross-section, made in lengths connected by mortice and tenon joints e adapted to accommodate variations in length.
Patent GB-388270-A (GB)
Title: Improvements in filing devices for letter files
IPC: B42F13/16
Filed: 1932-06-15
Abstract: 388,270. Filing papers. VLASAK, V., 235, Nadrazni tr., Krc, Prague. June 15, 1932, No. 16927. Convention date, June 15, 1931. [Class 146 (i).] A filing device for letter files comprises a pair of rocking filing pins 6 and a pair of guide pins 7 which latter are connected together under the baseplate 1 by means of obtuseangled bends 7<1> and a link mechanism adapted to swing the pins 7 horizontally through 90‹ in opposite directions. The pins 6 form extensions of a rocking arch 4 which is locked in the clamping position by a trigger 5, the cross-bar 4<1> of the arch being bent upwardly to clear the plate which secures the trigger to the upper side of the baseplate. The link mechanism may comprise a pair of links 8 pivoted at their outer ends to the outer ends of the bends 7<1> and at their inner ends to the ends of a double-armed lever 9 pivoted on a pin 10, or a single link 12 connected at one end to the outer end of one of the bends and at the other end to the inner end of the other bend. The pivots 11 of the bends 7<1> are arranged at a distance from the vertical plane passing through the guide pins 7 approximately equal to their distance from the front edge of the baseplate 1. The engaging ends of the pins 6, 7 may be stepped, as shown in Fig. 1, V-shaped, or cut across at an angle, and the swinging movement of the pins 7 is limited by flanges 1<1> formed by bending up the front and side edges of the baseplate. The latter is also bent to form a pair of flanges 2 by which it is riveted to the back of the cover of the letter file, riveting being facilitated by means of openings 3 formed in the baseplate.
Patent GB-187656-A (GB)
Title: Improvements in key cases
IPC: A45C11/32
Filed: 1921-06-21
Abstract: 187,656. Marks, E. C. R., (Buxton, Inc.). June 21, 1921. Key holders of the type described in Specification 157,313 are made of a folding strip 12 of leather, or the like, to which is fastened a metal plate 15, having bent-over portions 16, forming eyes for the hinge pin 17, and with spaces 18 for the hooks h. The plate 15 has also projections 19 which are bent over to secure the hinge pin 17 in position. The hooks are formed, as shown in Fig. 3, with a bent-over portion 20 to receive the pin, and a loop 23 to receive the key. A lip 25 is provided at the apex of the loop to facilitate insertion of the key. In the modification shown in Fig. 7, the members of the hook abut along a curved line, as shown at 27.
Patent GB-867630-A (GB)
Title: Diazotype material
IPC: G03C1/54
Filed: 1959-05-20
Abstract: The invention comprises diazo compounds of the general formula: <FORM:0867630/IV (b)/1> in which X is an acid anion, Y is a fluorine or chlorine atom, R4 and R5 are alkyl, hydroxyalkyl, or chloralkyl groups having at most 4 carbon atoms or aralkyl groups or chloro-aralkyl groups having at most 11 carbon atoms, R6 is an alkyl group having at most 4 carbon atoms or an aralkyl group having at most 11 carbon atoms, and R4, R5 and R6 contain together at least 6 or at most 17 carbon atoms. These compounds are suitable, in the form of their double salts (e.g. with zinc, stannic or cadmium chloride), for diazotype printing (see Group XX).  In Example 1, the starting material is 2-methoxy5-chloroaniline.  This is benzylated, and the N-benzyl derivative is then methylated to form 2- methoxy- 5-chloro-N-methyl-N-benzylaniline.  The latter is nitrated, and the nitro compound is treated in the usual way to obtain 4- N-methyl-N-benzylamino- 3- methoxy- 6-chloro-benzenediazonium chloride.  Example 4 describes the preparation of the corresponding N,N-di-n-propyl compounds by a similar series of reactions.  In Example 3, nitrosation, reduction and diazotization of 2-methoxy-5-chloro-N-n-propyl-N-benzylaniline (obtained from 2-methoxy-5-chloro-p-tosylanilide) yields 4- N-n-propyl-N-benzylamino- 3- methoxy- 6-chlorobenzene diazonium chloride.  In Example 6, reduction of o-nitro-p-fluoroanisole yields 2-methoxy-5-fluoroaniline; and this is reacted with p-toluene sulphonyl chloride, and the product is methylated.  The N-methyl compound is freed from the p-toluene sulphonyl radical, and the product is benzylated to give 2-methoxy-5-fluoro-N-methyl-N-benzylaniline.  This is nitrated, and the nitro derivative is reduced and treated to yield 4-N-methyl-N-benzylamino- 3- methoxy- 6- fluorobenzenediazonium chloride.  Example 7 describes the preparation of 2-benzyloxy-4-nitro5-chloro-N, N-dimethylaniline (starting from 2-nitro-4-chlorophenol).  Reduction and diazotization then give 4-dimethylamino-3-benzyloxy-6-chloro -benzenediazonium chloride. Other compounds referred to are:- 4-N-ethyl-N-n-butylamino-3-ethoxy-6- fluorobenzenediazon ium chloride; and 4-N-methyl-N-naphthylmethylamino-3- ethoxy-6- chloro-benzenediaz onium chloride.  Specification 867,629 is referred to.
Patent GB-496765-A (GB)
Title: Improvements in distributor couplings for ignition conductors of internal-combustion engines
IPC: F02P7/02
Filed: 1937-06-21
Abstract: 496,765. Two-part couplings. BREEZE CORPORATION OF GREAT BRITAIN, Ltd., and LARKIN, J. E. N. June 21, 1937, No. 17259. [Class 38 (i)] A distributer coupling for internal -combustion engines comprises a member 10 with apertures 11 to receive the terminal ends 13 of conductors 24 and a single locking member 15 movable on the member 10 to engage flanges 14 on the terminal ends and secure them against shoulders 12 in the member 10. The member 15 may be a plate that slides on the member 10 and has apertures 18 for the terminal ends with enlargements 19 that allow the flanges 14 to pass through when the plate 15 is slid to the unlocking position allowed by the pin-and-slot connection 16, 17. When the plate 15 is in the locking position, studs 21 passing through holes in the plates 10, 15 prevent unlocking and secure them and the cover 22 to the distributer casing 20. The leads 24 are connected to spring contacts 23 in the insulating terminal ends 13.
Patent GB-711566-A (GB)
Title: Improvements relating to thermostats for controlling the flow of gases
Inventor: FLAVEL SIDNEY WILLIAM BASIL
IPC: G05D23/02
Filed: 1951-07-20
Abstract: 711,566. Thermally-actuated valves. WEST LONDON APPLIANCES, Ltd. May 2, 1952 [July 20, 1951], No. 17285/51. Class 135. [Also in Group XIII] A thermostat in which a differential rod 8 and tube 5 actuates a gas valve 9 removably fitted, e.g. universally at 11, to the end of the rod, has a member 24, separately secured to an adjustable threaded sleeve 14 carrying the valve seat 12, for supporting the rod centrally in the tube when the valve is removed and so arranged that the rod is laterally free of the tube or casing when the valve is in position. The member 24 comprises a ring portion having a clearance 26 with the rod and supported by arms 27 secured in end slots in the sleeve 14. The sleeve has an arm 16 adjustable between the seat and sleeve for initial setting and through which the normal adjustment is made by the knob 28, spindle 19, and arm 17. The thermal tube acts as a gas passage, the rod being supported on an apertured plate where it is connected to the tube. Specifications 661,922 and 711,567 are referred to.
Patent GB-414882-A (GB)
Title: Motor-vehicle springing
IPC: B60G11/08
Filed: 1933-06-17
Abstract: 414,882. Spring suspensions for vehicles. ALVIS CAR & ENGINEERING CO., Ltd., and CLARKE, G. T. SMITH-, Holyhead Road, Coventry. June 17, 1933, No. 17327. [Class 108 (ii).] In a spring suspension for the wheels of motor vehicles of the kind comprising a transverse spring 13 which at its centre is pivotally connected to the chassis frame and at its ends is pivotally associated with the wheels 17, the ends of the spring are connected to the upper ends of brackets 37, which are supported by the wheels 17 and to the lower ends of which are linked rigid radius arms 18 disposed beneath the spring 13 and hinged at their inner ends 19, preferably with interposed damping-means, to the chassis. In the construction shown in Fig. 1, the spring 13 is clamped between plates 14, 15 and pivots about a pin 16 connecting brackets 12 on the frame 11. Modifications are described in which helical or rubber springs in addition are interposed between the spring 13 and frame 11 on each side of the pivot 16. In further constructions, a downward extension 22 of the plate 14 co-operates either with helical springs 23 as shown in Fig. 5 or with a spring-controlled rocking-lever. If desired the spring and supporting brackets may be mounted in a position inclined to the vertical. Specifications 409,523 and 414,759 are referred to.
Patent GB-1022289-A (GB)
Title: Bracelets
Inventor: HUNT FREDERICK CHARLES
IPC: A44C5/20
Filed: 1963-05-02
Abstract: 1,022,289. Releasable fastenings. HENRY GRIFFITH & SONS, Ltd. March 3, 1964 [March 2, 1963], No. 17337/63. Heading E2A. A bracelet has a pair of hingedly interconnected parts 10, 11 and catch means for releasably securing said parts together in a closed position the catch means comprising a projection 13 on one of the two parts 10, the projection being formed with an enlarged head portion 13a and the catch member 16 being slidably mounted over an aperture 15a in an end piece 15 on the other part 11, the catch member being resiliently urged towards a position in which the catch member partially covers the aperture in said other part and the arrangement being such that the projection can be disengaged from the catch member only when the latter occupies a position in which the aperture in said other part is uncovered. In the construction shown the catch member also has an aperture 16c and in the engaged position the projection 13 extends through both the apertures 15a and 16c the catch member engaging behind a head portion to retain the projection. The catch member has a straight outer edge 16a and a convex inner edge 16b which coacts with a spring 17. Both the leaf spring 17 and the catch member are located in the end piece 15 which is formed on or secured to one part of the bracelet.
Patent GB-443532-A (GB)
Title: Improvements in or pertaining to free piston engines
IPC: F02B71/00
Filed: 1935-06-17
Abstract: 443,532. Flywheels. SOC. D'ETUDES ET D'EXPLOITATION DU GENERATEUR A PISTON LIBRE, 33, Rue Liogier, St. Etienne, Loire, France. June 17,1935, No. 17409. Convention date, June 20, 1934. [Class 122 (i)] [See also Group XXVIII] A two-stroke free-piston engine, such as a gas compressor in which the motor 1 and compressor 1<1> are in tandem on the same rod, is stabilized by a shaft 7 carrying a flywheel 8 and connected with the piston rod by hydraulic transmission comprising a piston or a pair of pistons on the common rod moving in an oil-filled cylinder communicating at each end with an automatically filled container 3 and with a cylinder 3<3> containing a piston 5 coupled to the shaft 7. This shaft carries a centrifugal governor and drives a distributing shaft 12 and is coupled by a clutch with a starter 10, e.g. an electric motor. The opposite ends of cylinders 3<3> connected to opposed cranks are connected by pipes 3<2>, Fig. 3. This Figure shows auxiliary moans for eliminating exchange of energy between the engine and the fly-wheel except during disturbed working. The spaces between the pistons 5 and the inner ends of the divided cylinders 3<3> are filled with oil and communicate with containers 18, the pressure being such as to balance the normal pressure on the opposite sides of the opposed pistons. A differential piston valve 24 subject on its upper and lower faces to the main and auxiliary oil pressures discharges oil from the anxiliary device through grooves 27 to the low pressure feed 15 at starting, the oil being fed back through a valve 20 as the main oil pressure rises.
Patent GB-593226-A (GB)
Title: Improvements in and relating to artificial stones and the like
IPC: C08L95/00
Filed: 1945-07-09
Abstract: An artificial stone or like material is formed by embedding fragments of cured artificial resin in a bituminous material while in a plastic condition, the whole, after setting, being ground or machined to form a smooth surface or being left rough.  The bituminous and resinous material may be coloured.  Metal reinforcements may be incorporated in the mass.
Patent GB-722752-A (GB)
Title: Improvements in or relating to knitting on independent needle knitting machines of the cylinder and dial type
IPC: D04B9/06
Filed: 1952-07-10
Abstract: 722,752. Knitting. HEMPHILL CO. July 10, 1952 [July 11, 1951], No. 17436/52. Class 74 (2). To assist the transfer of loops 14 from dial to cylinder needles of a circular machine a number of courses 1, 2 are knitted on all of the cylinder needles whilst the dial needles hold their loops 14, whereafter the dial needles are projected and the sinkers 5, 6 are advanced to engage the fabric at a course prior to that containing the loops to be transferred so as to hold the loops taut for the reception of the cylinder needles. To enable the sinkers to be so operated a flopper cam 9 is provided which after the sinkers have been withdrawn by cam 8 are advanced again so as to coincide with the movement of the dial needles during loop transference.
Patent GB-269123-A (GB)
Title: Automatic oil-firing plant
IPC: F23N1/00
Filed: 1926-07-13
Abstract: 269,123. Willmeroth, E. April 9, 1926, [Convention date]. Liquid fuel supply.-An automatic oil-firing plant for central heating furnaces comprises an air compressor E communicating with an air chamber C within which the compressed air is stored, and from which it is fed to the burners of a low pressure steam boiler A and a water heater B, the operation of the compressor motor F being controlled by a pressure-operated switch H connected with the air chamber. The air chamber is also connected with an oil tank D so that the oil is fed under air pressure to the burners, the oil feed to the boiler A being regulated according to the steam pressure by a diaphragm regulator 7, and the supply of oil and air to the water heater B being cut off by a thermostatic device 22 when the water reaches a definite temperature. The oil tank D is filled through a valve 37 and filter cap M, and contains sufficient oil for one day. When a pressure of three atmospheres is reached in the air chamber C the switch H opens; this pressure is reduced to half an atmosphere at the reducing valve 30 from which the air passes to the surface of the oil in the tank D and to the burners. The oil passes through valve 36, pressure-regulated valve 6, non-return valve 20, regulating valve 4, and pre-heater 10 to the burner 5 of the steam boiler A, and also through thermostatically-operated valve 21 and non-return valve 19 to the burner of the water heater. The air supply to the boiler A is controlled by a valve 3 and heated in pipes 9. Safety valves 27, 32 are provided on the chamber C and tank D respectively, and a fusible safety device at the top of the oil filter cap M. Specifications 25798/09, 205,814 and 237,074 are referred to.
Patent GB-1474369-A (GB)
Title: Laminated piezoelectric transducers
IPC: H01L41/43
Filed: 1974-05-29
Abstract: 1474369 Piezoelectric elements DEFENCE SECRETARY OF STATE FOR 29 May 1974 [12 April 1973] 17568/73 Heading H1E A piezoelectric transducer of spiral laminated form is made by producing a layered structure from an electroded sheet or sheets of ferroelectric ceramic material held in a binder, winding the structure in a spiral, firing the spiral structure and then polarizing the fired material using the hot method. The sheets may consist of powered Pb (Ti  0À48  Zr 0À52 )O 3  dispersed in a binder. As shown, several such sheets may be used, each provided on one face with a conductive layer 3, 4 of platinum paste extending between two opposite edges. Two sheets are placed face to face and wound spirally to form a short apertured cylinder, Fig. lb. The exposed ends of the sheets are ground to expose the conductive layers and these are conductivily connected to layers of nickel deposited on the outer and inner cylindrical faces. The transducer responds in a radial mode.
Patent GB-1457658-A (GB)
Title: Reinforced thermo plastic materials
IPC: C08L101/00
Filed: 1974-04-22
Abstract: 1457658 Laminates PNEUMATIQUES CAOUTCHOUC MANUFACTURE ET PLASTIQUES KLEBER-COLOMBES 22 April 1974 [20 April 1973] 17578/74 Heading B5N [Also in Division C3] Laminated structures in the form of thin sheets or strips comprise two or more superimposed layers of composite reinforced plastics material comprising a matrix of a thermo-plastic material other than a thermoplastic rubber throughout which is distributed at least 5 weight per cent of a crystalline reinforcing polymer which is compatible with but non-imisible with the matrix material, the reinforcing polymer having a molecular weight of at least 500,000 and a melting point higher than the softening point of the matrix material, and being in the form of fine particles a major proportion of which particles are drawn out into the form of elongated fibres which impart high strength to the composite material. The fibrils may be formed by masticating a mixture of thermoplastic material and polymer at a temperature near the melting point of the polymer. The exemplified reinforcing polymer is high density polyethylene and exemplified matrix materials are polyvinyl chloride, ethylene/vinyl acetate copolymer and low density polyethylene containing ethylene/ propylene rubber.
Patent GB-750420-A (GB)
Title: Improvements in or relating to air intakes for turbo-jet engines for aircraft
Inventor: CLARK BERTRAM FRANK
IPC: F02C7/057
Filed: 1953-06-25
Abstract: 750,420. Electric control systems. BOULTON PAUL AIRCRAFT, Ltd. June 25, 1954 [June 25, 1953], No. 17635/53. Class 40(1) [Also in Groups XXVI and XXIX] An air intake for a gas turbine jet propulsion engine has an axially adjustable centre body for varying the effective crosssectional area of the intake which is adjustable by means of an actuator controlled by means responsive to the Mach. No. An axially adjustable body 1 arranged within the air intake 41 is actuated by pressure controlled mechanism through a screw-threaded jack actuator 3, operated by an electric motor, connected by a rod 4 to the adjustable body 1. The jack 3 is pivoted to the aircraft structure at 5 and is supported from the casing 2 housing the engine starter gear by a spider 7. An expansible capsule 8, connected by a pipe 9 to a pitot head 10. is contained in a sealed chamber 11 connected by a pipe 12 to a static vent 13. One end of the capsule 8 is anchored at 14 and the other end carries an extension 15 which acts on a pivoted arm 16, loaded by a spring 17 so that in a balanced position the arm is in an intermediate position between the micro-switches 18, 19. The other end of the spring 17 bears on an abutment 20 of a slidable rod 21 attached to the adjustable body I. Variations in pressure in the capsule 8 will cause the arm 16 to move and contact one or other of the switches 18, 19. These switches operate the motor of the jack 3 so that the arm 16 is returned to the neutral position. The position of. engagement of the extension 15 on the rocking arm 16 is varied by another screw jack 30 controlled by micro-switches 32, 33 under the control of an altimeter cap sule 34 so that the movements of the rocking arm 16 are dependent upon the Mach. number. In a modification the adjustable body 1 is moved by a fluid pressure motor under the control of valves governed by the air speed indicator and altimeter capsules. In a further modification, an electric voltage is modulated by a Mach. meter and the modified voltage is used to control the position of the adjustable body 1.
Patent GB-1381958-A (GB)
Title: Lubricating pumps
IPC: B21B35/14
Filed: 1972-04-18
Abstract: 1381958 Rotary positive-displacement pumps G SCHWARTZ & CO 18 April 1972 [12 May 1971] 17755/72 Heading F1F In a rolling mill a lubricant gear-pump has pinions 17 lodged in housings 16 and meshing with teeth 6 on a hub 1, which has halves 1a, 1b coupled by bolts 3 and fixed to a roller spindle 4 by keys or wedges 5. An annular cover 12 comprising the housings has halves 12a, 12b connected by bolts 14 and held against rotation by a bracket 15 and pin 15a. The lubricant enters through either of housing caps 18 and is discharged through the gaps 9 between pairs 8 of the teeth 6 and passages 10 communicating with these gaps. The teeth between the pairs 8 have passages 7 therein to minimize churning of the lubricant. In addition to labyrinth seals formed by grooves 20 packing rings 21 may be mounted on the hub in abutment with annular plates 26 fixed to the cover. Reference has been directed by the Comptroller to Specification 1167236. (For Figures see next page)