baber/WOPTO huggingface dataset:
Patent GB-661047-A (GB)
Title: Improvements relating to devices responsive to the level of liquids
Inventor: BOMYER LEONARD
IPC: G01F23/38
Filed: 1949-02-15
Abstract: 661,047. Actuation of switches. TRIST & CO., Ltd., R.; and BOMYER, L. Jan. 19, 1950. [Feb. 15, 1949; July 21, 1949]. Nos. 4165/49 and 19265/49. Class 38 (v). [Also in Group XVIII] A device responsive to the liquid level in a container 6, e.g. for regulating the water level in a steam boiler, comprises a magnet 2 outside the container rocked by magnetic repulsion with a magnet 16 inside the container, the magnet 16 being coupled to a, float 22 through a lost motion device 14, 18, whereby upon the magnet 16 taking up a position due to the attainment by the float of either a predetermined high or low level, the magnet 16 will not begin to reverse its position until the float 22 attains a predetermined low or high level respectively. A housing 4 for the magnet 2 and for a switch operated by the magnet 2 carries a fork 8 between the arms of which is pivoted at 12 a holder 14 for the magnet 16. Also pivoted at 12 is an arm 18 carrying the float 22. Upon the float 22 attaining a high or low level the arm 18, ora wedge 38 adjustably mounted on it, contacts a surface 34 on the holder 14 which is hence rocked by an armature determined by the depth of a boss 21 on the casing 4, with which horns 20 on the holder 14 engage, and the magnet 16 traverses the end of the magnet 2 which is moved to its new extreme position. The distance traversed by the arm 18 between contacting one or other of the surfaces 34 represents the lost motion, during which movement magnets 16 and 2 are not moved, and this distance can be adjusted by varying the position of the wedges 38 on the arm 18 alternatively, or in addition, the position of the float 22 may be varied on the arm 18. In this way the high, mean, and low levels are adjusted. Two modifications are described. In the first, Fig. 4 (not shown), the distance between. the surfaces 34 is varied by pins in a sector fixed to the holder 14. In the second, Fig. 3 (not shown), the arm 18 carries two adjustable screws which contact the holder 14.
Patent GB-608786-A (GB)
Title: Improvements in or relating to thermal delay action electric switches
IPC: H01H43/30
Filed: 1946-02-11
Abstract: 608,786. Thermal switches. WESTLAND AIRCRAFT, Ltd., and SWAFFIELD, P. J. Feb. 11, 1946, No. 4214. [Class 38 (v)] A thermal delay-action switch device in which each of a plurality of bimetallic elements operates a flick action switch to bring into operation a succeeding element, comprises two bimetallic strips 5, 6 with associated heaters 7, 8 mounted on a conducting bar 4a to operate flick-action switches 1, 2 carried on similar bimetallic strips 3, 4, to provide ambient temperature compensation. When the switch 10 is closed, heater coil 7 is energized through compensating resistance 11, and the contacts 12, 14 of switch 1. After, say, two minutes, the switch is operated to connect the heater. coil 8 in circuit in place of the resistance 11, and switch 2 is operated after a further delay to de-energize the relay 18 and light an indicating lamp 16. Further elements may be used to increase the delay period.
Patent GB-873284-A (GB)
Title: Novel steroid compounds and a method for preparing them
IPC: C07J75/00
Filed: 1960-02-05
Abstract: The invention comprises compounds having the formula: <FORM:0873284/IV (b)/1> wherein R1, R2, R3 and R4, which may be the same or different, each represent hydrogen, carboxylic acid acyl groups or alkoxycarbonyl groups and a process for preparing said compounds which comprises oxidising 5(6)-pregnene-3b ,16b ,20a -triol, 5(6)-spirosten-3b -ol, 5,6-epoxyspirostan-3b -ol, spirostane-3b ,5a ,6b -triol or an ester of any of the foregoing with a carboxylic acid or with a monoalkyl carbonate and if necessary, hydrolysing the oxidised compound.  Examples disclose the preparation of pregnane-3b ,5a ,6b ,16b ,20a -pentol and the tetraformate and tetraacetate thereof.
Patent GB-821017-A (GB)
Title: Improvements relating to shoe-type brakes
IPC: F16D65/09
Filed: 1958-02-10
Abstract: 821,017. Automatic adjusting devices for brakes. DAIMLER-BENZ A.G, Feb. 10, 1958 [Feb. 14, 1957], No. 4291/58. Class 103 (1). In an automatic adjusting-device for an internal shoe-drum brake, a sleeve 16 passes through an adjustment slot 17 in the shoe 6 and is disposed on a hollow bolt 13, which is attached to the brake back-plate 10, with a certain degree of clearance 15 equivalent to the release clearance of the brake shoe and on each side of the shoe 6 is a friction disc 18, 19 which embraces the sleeve 16. The discs are pressed against the screw by a spring 21 and by way of a collar on a bush 23 screwed into the sleeve 16. A compression spring 27, acting in conjunction with a pin 30 which passes through hollow bolt 13, serves to hold the brake shoe 6 axially and bears on bush 23 and by way of friction disc 19 presses the shoe 6 against a bearing-plate 28 attached to the back-plate 10. In relation to the middle of the brake shoe 6, a restoring spring 32 is offset towards the back-plate 10 so that the shoe-operating force together with the force of the spring exerts a moment which reinforces the action of spring 27 pressing the shoe perpendicularly to the back-plate against the bearing-plate 28 and prevents brake squeal.
Patent GB-984269-A (GB)
Title: Turbine assembly
IPC: F02C5/02
Filed: 1960-07-20
Abstract: 984,269. Gas turbine plant. J. E. LINDBERG. May 9, 1961 [July 20, 1960], No. 4329/64. Divided out of 984,266. Heading F1G. [Also in Division G1]  A turbine assembly comprises an outer casing within which is disposed a gas generator comprising a chamber having an outlet terminating in a nozzle which is directed so as to discharge gas on to the blades of a turbine rotor which is also disposed within the outer casing. A quantity of a substance which will emit gas and take in gas with changes in temperature is disposed within the chamber and means are provided to heat the substance so that upon appropriate change of temperature in said substance, gas will be emitted and will be discharged through the nozzle so as to act on the turbine rotor. In Fig. 1 a turbine rotor 279 is disposed within the outer casing 275 and is supported on a shaft 276 rotatably mounted in a wall of the casing, a seal 277 being provided so as to seal the interior of the casing from atmosphere. A chamber 282 of a gas generator unit is disposed within the casing 275, the chamber having a gas outlet duct which terminates in a nozzle 281 by which gas is directed on to the bladed rotor 279. A porous container 289 is disposed within the chamber 282 and a quantity of a suitable substance 288 is contained within the container, an electric heating coil being embedded in the substance. The chamber 282 has a non-return valve 285 in an end wall, the valve allowing gas to pass from the interior 278 of the outer container into the space 287 within the chamber 282 but not vice versa. The heating coil is connected to a source of alternating current, a half wave rectifier 295 being disposed in one of the leads. When current is applied to the coil 290, the substance 288 gives off gas which acts on the turbine rotor, the gas discharging into the space 278. When the current is cut off, the substance cools, the pressure in the space 287 falls and the gas flows back through the valve 286 from the space 278 to space 287 where it is re-absorbed by the substance, and the cycle then repeats. A suitable substance is a metal hydride which gives off hydrogen when heated and re-absorbs it when cooled. In a second embodiment the apparatus comprises a gyroscope the rotor of which is similar to the turbine rotor 279 of Fig. 1 except that the shaft is disposed wholly within the casing 275.
Patent GB-585514-A (GB)
Title: Improvements in or connected with staircases
IPC: E04F11/16
Filed: 1945-02-22
Abstract: 585,514. Staircases. NORRIS & CO., Ltd., F. A., and KERRISON, R. T. Feb. 22, 1945, No. 4454. [Class 20 (iv)] [Also in Group XIV] A staircase of sheet metal has stair rod clips formed out of the risers and/or treads. As shown, the risers 1 are cut to form strips 2, which are bent outwardly and downwardly to form clips which receive stair rods 3 and rest on, or are secured to, wood or other treads 4.
Patent GB-364386-A (GB)
Title: Improvements in appliances for electrically stunning animals
IPC: A22B3/06
Filed: 1931-02-12
Abstract: 364,386. Electrically stunning animals. GASSNER, R., 28, Schonfeldstrasse, Munich, Germany. Feb. 12, 1931, No. 4464. [Class 5 (i).] An appliance for electrically stunning animals comprises -a head yoke having electrodes, the distance apart of which is regulatable, and which are adapted to be placed against the temples of the animals. A yoke 7 which may be suspended from a pulley, comprises arms 8 pendent from the shanks of hooks 18 which may be mounted resiliently or on swivels, and serve to hook the appliance to the horns of the animal. The arms 8 and hooks 18 are adjustable in slots 9 by rods pivoted to a crank disc having a handle 12 which comprises a spring- loaded pin, with release lever, co-operating with a series of holes 15 in a disc 11 or in the yoke 7. Springs connect the arms 8 to short arms fixed on the hook shanks. The arms 8 carry electrodes 16 having pins 17 of non-rusting steel or of platinum coated metal which may have rounded tips or may be in the form of tubular spikes with serrated tips. The electric circuit comprises a switch 6 on the yoke and a hand switch in series therewith. In a modification, Fig. 4, electrodes are resiliently supported on the arms of tongs. Specification 329,242, [Class 81 (ii), Medical &c. appliances], is referred to.
Patent GB-657381-A (GB)
Title: Improvements in or relating to pipe couplings
IPC: F16L29/00
Filed: 1949-02-18
Abstract: 657,381. Pipe couplings. HODGES RESEARCH & DEVELOPMENT CO. Feb. 18, 1949, No. 4469. Convention date, April 5, 1948. [Class 99(i)] Male and female elements 10, 11 of pipes 20, 35 have valve seats 17, 31 engaged by valves 25, 39 that are biassed to their closing positions by resilient means, such as springs 26, 40 and have means, such as a pin 41, adapted to coact to open the valves when the elements are in coupled position, and a resilient diaphragm 44, which is located in element 11 and has a normally closed aperture 45<SP>1</SP>, prevents leakage of fluid during coupling and uncoupling of the elements. The aperture is expanded by element 10 so that the aperture sides slide over and grip the element. Spring 40 may be weaker than spring 26 to ensure that valve 39 opens before valve 25;- also spring 40 may be fully compressed before pin 41 opens valve 25. The elements may be locked in the coupled position by providing a flange 27 and an extension 42 which have interrupted screw-threads engaged together by a partial turn of the elements relative one to the other.
Patent GB-211881-A (GB)
Title: Improvements relating to unions or couplings for pipes or the like
IPC: F16N21/04
Filed: 1924-02-21
Abstract: 211,881. Soc. Anon. des Etablissements TÚcalÚmit. Feb. 21, 1923, [Convention date]. Grant of Patent revoked. Couplings, disconnectible.-A hollow body a in communication with a grease pump &c. by a flexible conduit p, and a nipple on the part to be lubricated, both members having passages required to register, are provided with means for coupling them together by relative movement transverse to such passages, a fluid-tight joint being obtained by means of a resilient flexible gland e on the member a which is adapted to bear against the head q of the nipple. The body a is provided at its lower part with a prolongation b, which terminates in a flange c adapted to be hooked under the head q, while the gland e is positioned between an interior thread on the body a and a ring f screwed into the interior of the gland. The gland, which is provided with a hole g, is pressed against the head q by a spring l positioned between a flanged ring k surrounding the hole g and a plug h having a conical extension j fitting in the top of the body a. The body a is prolonged laterally by a tapered tubular part m communicating with the interior of the body by an orifice n. Specification 114,786, [Class 12 (iii), Lubricators &c.], is referred to.
Patent GB-534560-A (GB)
Title: Improvements in the method of and means for distilling tar and tar like compounds
IPC: C10C1/04
Filed: 1940-03-12
Abstract: 534,560. Distilling tar. GREEN, H. E. J. March 12, 1940, No. 4617. [Class 32] In a process for the distillation of tar and like hydrocarbon materials by passing the tar through a tube still to a separating trap from which vapours are removed and condensed while the liquid collecting in the trap is in part re-circulated and admixed with the crude feed at a point before its entrance to the still. A plurality of units comprising each a still and separating trap are operated in cascade, the overflow from the separating trap of one unit constituting the feed to the succeeding still. Tar is fed by a pump 1 through line 3 and tubular still 2 to a trap 4 from which vapours are led off to a condenser 6. The liquid collecting in the trap is led in part through line 8 and syphon bend 9 to admix with the fresh feed at junction 10, while the remainder of the liquid is led through syphon 16 and line 15 to a second similar still in which the process is repeated, higher temperatures being used. The stills may be operated under vacuum and steam supplied through inlet 11.
Patent GB-484428-A (GB)
Title: Improvements in and relating to refractors for street lighting purposes
IPC: F21V5/00
Filed: 1937-02-16
Abstract: 484,428. Street lamps. HOLOPHANE. Ltd., and ENGLISH, S. Feb. 16, 1937, No. 4657. [Class 75 (ii)] A lamp for streetlighting purposes comprises a prismatic refractor 1 enclosing a light source 4 which subtends a small angle at the prisms in the plane of refraction, the faces of the refracting prisms 6 being curved, as shown in Fig. 2 to produce diffusion in the plane of refraction on either side of the general direction of projection. The arrows e<1>, f<1>, g<1> and h<1>, k<1>, l<1>, Fig. 2, indicate the diffusion produced after refraction by two prisms of typical rays e, f, g and h, k, l. In the construction shown in Fig. 4, the light source 5 is a central vertically arranged gaseous discharge tube, the prisms 6 being formed with curved faces only within an arc B on each side of the source 5. This construction ensures projection of light in the general direction C with diffusion over an angle of about 10‹ on each side of this direction. Specifications 351,761 and 359,692 are referred to.
Patent GB-1394153-A (GB)
Title: Toothed belt transmission between toothed pulleys
IPC: F16H7/08
Filed: 1973-01-30
Abstract: 1394153 Belt gearing INDUSTRIE PIRELLI SpA 30 Jan 1973 [1 Feb 1972] 4657/73 Heading F2Q In a toothed belt transmission a belt 3 passes around pulleys 1 and 2 and is acted against by a tensioning jockey pulley 4, there being a resilient layer 12 of material on the surface of the belt opposite to that having the teeth, or alternatively on the jockey pulley 4, between the pulley 4 and the reinforcing cords of the belt, to reduce the increase in belt tension due to movement apart of the pulleys 1 and 2. The layer 12 may have longitudinal grooves in it to increase the belt flexibility (Fig. 3, not shown). As shown in Fig. 1 the tensioning of the belt is through pivoting of a plate 5, carrying the jockey pulley 4, about a pivot 6, a bolt 7 holding the plate in position. There may be resilient layers provided both on the belt and on the pulley.
Patent GB-205011-A (GB)
Title: Improvements in or relating to the production of lecithin from vegetable matters
IPC: C07F9/10
Filed: 1923-02-17
Abstract: Lecithin is obtained from vegetable materials by extracting with a mixture of alcohol and at least 10 per cent of benzene. The extract is warmed until substantially free from solvent, the sediment separated and steam introduced into the oily residue. The lecithin is finally separated from adhering oil in known manner.  A preferred solvent mixture consists of two parts of 96 per cent alcohol to 3 parts of benzene.  The raw materials should not contain more than 10 per cent of water and the concentration of water in the extract should not be allowed to reach more than 10 per cent of the alcohol present.  If the initial materials contain no fatty oils these must be added to the extract before the subsequent operations.
Patent GB-472740-A (GB)
Title: Improvements in or relating to coffee grinders
IPC: A47J42/34
Filed: 1937-02-17
Abstract: 472,740. Coffee mills. MAIRE, G. Feb. 17, 1937, No. 4747. Convention date, Feb. 17, 1936. [Class 59] A coffee-grinder comprises a grinding cylinder 6 fixed to an arm 8 adapted to be moved up and down by a handle 9. The cylinder co-operates with breasts 10, 4 on the downward and upward stroke respectively and the ground coffee is collected in a drawer 15. The breast 10 is connected to a spring 11 and is adjustable by a screw 13 ; the breast 4 may also be adjustable. The roller and breasts are secured between side plates 2 by rods 3. The casing 12 may be attached to a wall and a feed inlet 14 and window 17 are provided.
Patent GB-881242-A (GB)
Title: Liquid spring and shock-strut suspensions for aircraft and vehicles
IPC: B64C25/60
Filed: 1959-02-11
Abstract: 881,242. Liquid springs. TAYLOR, P. H. Feb. 11, 1959, No. 4758/59. Class 108(3). A liquid spring using compressible fluids comprises high and low pressure chambers 30, 40, a low pressure piston 60 and a pressure intensifying member 50; within which the piston head 61 slides, separating the two chambers. The intensifying member 50 slides in both chambers and is hat shaped with two low-pressure chambers 40a, 40b separated by the piston head 61 which has grooves 62 for damping but may be modified to have an internal adjustable metering valve and one way flapper valve. A chamber 70 between the internal web 25 and flange 54 of the intensifying member may have compressed air admitted through pipe 81 to give a preload to the spring. Both liquids are preferably silicones, the high pressure one being polymorphous such as a dimethyl siloxane. Curves are shown of the relationship between load and deflection for the different rates of deflection using a polymorphous liquid. Reference has been directed by the Comptroller to Specification 826,372.
Patent GB-1036431-A (GB)
Title: Improvements in or relating to gramophone pick-up arms
IPC: G11B3/14
Filed: 1962-02-07
Abstract: 1,036,431. Gramophone pick-ups. W. WORDEN. Feb. 6, 1963 [Feb. 7, 1962], No. 4782/62. Heading G5R. The light wooden arm members 16a, 16b are pivoted together and one end of 16a is pivoted on a trunnion 18 and carries an upright ball bearing 31, Fig. 5, by which the portion 16b is supported. The bearing 31 is offset to the side of the arm nearer to the turntable centre and the movement of the member 16b is regulated by an adjustable link 54 connected to the arm at 55 and anchored to a fixed pivot at 57. The link 54 is disposed on the side of the bearing 31 farther from the turntable centre and is also slightly offset towards the support 18 relative to the keying 31. A numerical example of the linkage is worked out in connection with Fig. 3 (not shown) and results in a maximum tracking error of “ degree. The trunnion blocks 18 are of wood and may be changed to set up the desired original settings.
Patent GB-817284-A (GB)
Title: Improvements in or relating to variable resistors or potentiometers
Inventor: SHARP LEONARD WILLIAM DESCARRI
IPC: H01C10/32
Filed: 1956-02-16
Abstract: 817,284. Magnetic couplings having air-gap partitions. PLESSEY CO. Ltd. Feb. 14, 1957 [Feb. 16, 1956], No. 4824/56. Class 35. [Also in Groups XXXVI and XL (c)] A variable resistor or potentiometer whose tracked resistive element 1 and wiper arm 5,are located in a hermetically seale d housing 2, has angular adjustments transmitted to the arm from an actuating element 11 located outside the housing by a magnetic coupling comprising a pair of magnetizable members 15, 16 respectively secured to the actuating element 11 and to the arms and each terminating in two polepieces which free the polepieces of the other through a non-magnetic partition 7 forming part of the housing. As shown, the members 15, 16 are secured in sheet-metal clips 17, 18, one, 17, of which has a stop 19 to engage a housing abutment 20 to limit rotation of the wiper arm. The actuating element comprises a shaft 11 located axially by a circlip 14 an d a collar 13 in a bearing bush 10 and has fluid-tight seals 12. One member 15 or 16 may be a permanent magnet and the other of magnetically soft material, or both may be permanent magnets, or one or both clips 17, 18 may contain a solenoid to magnetize its corresponding member. Electrically insulated lead-through terminals 6 are provided. In the Provisional Specification the coupling is not limited to transmitting rotary movement.
Patent GB-882407-A (GB)
Title: Electrical pulse communication systems
Inventor: POWELL ALBERT E
IPC: H04J3/00
Filed: 1960-02-11
Abstract: 882,407. Pulse modulation systems. SEALECTRO CORPORATION. Feb. 11, 1960, No. 4830/60. Class 40(5). In a pulse communication system, thetransmitting equipment comprises a pulse generator 10, Fig. 1, supplying a coil 11 which surrounds a magnetostrictive delay line 12 having a plurality of spaced primary coils 13, 14 connected to a transmitter 16 through an amplifier 15, and a number of secondary coils 17, 18, 20, 21 connected to respective modulators 23-26 which are supplied with modulating signals from circuit 27 and are connected to transmitter 16. In the embodiment shown, pulses 17B, 18A, 20B, 21B, Fig. 3, resulting from a single magnetostrictive pulse passing through coils 17, 18, 20, 21 respectively, are amplitude modulated in modulators 23-26 respectively supplied with different modulating signals, and the pulse groups 13A, 14A from coils 13, 14 serves as a synchronizing signal. The receiving equipment comprises a receiving circuit 31, Fig. 4, supplying a coil 32 which surrounds a magnetostrictive delay line 40 having primary coils 38, 37 and secondary coils 36-33 spaced thereon in positions corresponding to those of the coils on line 12 of the transmitting equipment. Pulses 13A, 14A simultaneously generate respective voltage pulses in coils 38, 37 to open gate valve 42 which then supplies a pulse to open gates 44-47 thereby allowing the voltage pulses generated simultaneously in coils 36-33 by pulses 17B, 18A, 20B, 21B respectively to be passed to a utilization circuit 48. The receiving equipment may be made effectively operative only during a fraction of a pulse duration in each pulse train 17B-21B and permits an improvement in signal to noise ratio over communication systems in which the receiver is continuously operative. The spacing of the pulses in each pulse train may be varied for greater secrecy by altering the positions of the respective coils on the magnetostrictive line 12, corresponding alterations being made in the receiving equipment. This is conveniently achieved by providing a large number of coils, divided into groups, on the delay lines, and selecting one coil from each group by means of multi-position switches.