baber/WOPTO huggingface dataset:
Patent GB-1429741-A (GB)
Title: Soil and rock testing piezometers
IPC: G01L7/08
Filed: 1974-02-28
Abstract: 1429741 Measuring water pressure in soil SOIL INSTRUMENTS Ltd 27 Jan 1975 [28 Feb 1974] 9201/74 Heading G1S Pore water pressure in soil is transmitted through a tube 7, Fig 1, and bores 5 to one side of a diaphragm 2 in a sensing head 1, the other side of the diaphragm communicating via filters 12 with pipes 13, 14 running to a measuring station, Fig. 2. In operation the gas circuit shown is supplied with nitrogen from a storage cylinder 20 to pressurize the pipe 14 and cause the diaphragm to seat in the dished part 15 of the head 1. The gas then passes into the pipe 13 which is closed at the measuring point by a valve 29. The pipe 14 is then closed by valve 25 and 13 is vented to atmosphere via valve 29 to allow the pressure in pipe 14 to fall and equal the pressure in cavity 8. At this point the pressure in pipe 14 remains constant and equals the pore pressure in cavity 8 which is indicated on the gauge 26.
Patent GB-216628-A (GB)
Title: Improvements in starting devices for internal combustion engines
IPC: F02N1/02
Filed: 1923-04-04
Abstract: 216,628. Downham, J. A. April 4, 1923. Turning-gear .-A starting-handle 1 is secured to a sleeve 2 threaded externally for engagement with a nut 4 and on rotation is displaced automatically into engagement with the starting shaft 5 and is automatically disengaged if the shaft turns backwards. In one form, Fig. 1, the nut 4 carries a ratchet 6 engaged by a pawl 7 on a casing 9 secured to the chassis of the vehicle rigidly or by springs 28. On turning the handle 1, serrated clutch members 16, 17 on the shaft 5 and the sleeve 2 are brought into engagement by the action of the screw-threads, and they are automatically disengaged if the engine turns backwards. In order to accelerate the disengagement, a washer 12 keyed on the shaft 5 engages rollers 13 mounted in the nut 4 and engaging a loose washer 15. On the backward rotation of the shaft 5, the sleeve 2 is frictionally rotated in a clockwise direction by the washer 12 acting through the rollers 13 and washer 15. In a modification, Fig. 3, the nut 4 has a serrated face 20 engaging serrations 21 on a sun-wheel 22, which is connected to a pinion 23 keyed on the shaft 5 by a gear-wheel 25 and an intermediate gear (not shown). A casing 26 mounted on the nut 4 carries the ratchet wheel 6 and the intermediate gears. On turning the handle 1, the nut 4 is held by inertia and friction, and the sleeve 2 and gear 22 move to the left. bringing the serrations 20, 21 into engagement and also the serrations 16, 17. The handle 1 is thus locked to the shaft 5, and the casing 26 and gearing 22 - - 25 rotate as a whole. If the engine turns backward's, the gearing 23, 25 drives the gear 22 in a clockwise direction, so that no shock on the handle is felt, and the nut 4 moves axially to effect disengagement.
Patent GB-275694-A (GB)
Title: Improvements in road-traffic signalling systems
IPC: G08G1/081
Filed: 1926-04-08
Abstract: 275,694. Marks, E. C. R., (General Strut Signal Corporation). April 8, 1926. Fire and like alarm systems and apparatus.-The invention relates to a traffic-control system by which signals may be operated along a route determined at a central station to clear the route for a fire-engine &c., when an alarm has been given. Each signalling station is provided with one or more signalling devices, such as a lamp 7, bell 8, a horn 9, put into operation by a time switch under the control of a selector operated from the central station, and an indicating device may be provided at the central station to show the duration of each signal. A calling-up device may connect each signalling station with the central station, and a telephone instrument may be incorporated. Fig. 2 shows four main signalling stations A - - A<4>, each having a calling-up device, arranged at the corners of a block, with substations a - - a<4> arranged along the sides of the block. A selector switch 44 of known construction is operated by impulses transmitted from the central station to actuate the signals at pairs of stations such as A, a, first energizing an electromagnet 41, which in turn energizes a magnet 35 to close a time-switch 25, also of known type. Even if the selector 44 has not been de-energized, the closing of the switch 25 shortcircuits the switch 35. The switch 25 closes contacts 24,26 to put the signal devices of the main stations A into a circuit 11 by the leads 12, 29, and closes contacts 24, 33 to energize an electromagnet 31 at the substation a by which the signals there are actuated. Calling-up devices 5 are connected in a circuit 99, and the identity of a calling station is recorded at the central station on one of the instruments 101. Fig. 4 shows the central station switch board having impulse-producing devices 50 arranged to correspond to the position of the series of signalling stations. Each device is arranged to receive a plug 69 so that the route to be cleared can be shown on the switch board, the devices then being operated in turn along the route. The impulses are produced by a spring motor wound up by a key 77 and driving a toothed wheel making the required contacts in the selector circuit 46. An indicator 78 is turned from view on operation of the key 77, a lug 81 on the key engaging the indicator arm 82, and the indicator is held by a detent 82<a> until a nose 94 on a spindle 95 is burned by a spring motor actuating a lever 89 to release the detent and expose the indicator. The nose 94 is adjusted on its spindle to effect this release at a time coinciding with the opening of the corresponding time switch 25.
Patent GB-667114-A (GB)
Title: Improvements in or relating to the manufacture of jelly powder
IPC: A23L29/281
Filed: 1949-04-06
Abstract: 667,114. Jelly powder. RECKITT & COLMAN, Ltd., and KETT, G. June 28, 1950 [April 6, 1949], No. 9437/49. Class 49. A jelly powder which yields clear jellies is produced by dry mixing a uniformly sized sugargelatine powder, made by spray-drying an aqueous colloidal solution containing sugar, a smaller weight of gelatine and 2 to 3.5 per cent of sodium carbonate or bicarbonate based on the total weight of solids, with a powdered organic acid which can liberate carbon dioxide from the carbonate or bicarbonate in aqueous solution, the amount of acid being sufficient to give a pH between 4 and 5 when 1 part of the mixture is dissolved in 3 to 5 parts by weight of water. The size of the particles of the sugar-gelatine and acid powders may be within the B.S. sieve range of 80 to 150. In the example given, a solution containing 40 per cent by weight of solids, 17.64 per cent of the solids being gelatine, 39.8 per cent sucrose, 39.8 per cent glucose and 2.76 per cent sodium bicarbonate, is homogenized and spray-dried at 72‹ C. The resulting powder is dry mixed with 3.25 per cent by weight of citric acid powder. Extra powdered sucrose or glucose may be added. Specification 596,731 is referred to.
Patent GB-1534058-A (GB)
Title: Record disc recording and/or transcribing machine
IPC: G06K/
Filed: 1976-03-10
Abstract: 1534058 Disc changing in dictation apparatus INTERNATIONAL BUSINESS MACHINES CORP 10 March 1976 [17 March 1975] 09465/76 Heading G5R In a disc dictation machine having a loader carrier 10 movable to effect a disc change cycle by ejecting a first disc from a record/playback station into an unload station and simultaneously transferring a second disc from a load station into the record/playback station, a mechanism is provided to disengage the disc from a spindle 31 at the record/playback station, the mechanism comprising a lever 20 pivoted at 21 and biased by a spring 22 to an inoperative position, determined by an adjustable stop 26, in which its one end (right end Fig. 2) is out of contact with spindle 31, a cam 23 on the other end of lever 20 being engaged by part 10c of loader carrier 10, during movement thereof in one direction in a disc change cycle, to rotate the lever 20 so that its one end engages and depresses the spindle 31 out of engagement with the disc at the record/playback station, a latch 24 on lever 20 thereby being biased by a spring 25 to a position, Fig. 3 (not shown), locking the spindle 31 in the depressed position, and the spindle 31 being released from this position as the loader carrier 10 moves in the opposite direction and a part 10b thereof engages and releases the latch 24. The loader carrier is as disclosed in Specification 1,534,057, and is used with discs of the type disclosed in Specification 1,379,354 the spindle 31 being as in Specification 1,441,080. Said one end of lever 20 has a finger 27 to engage a flange 30 on spindle 31 to effect depression thereof, and a finger 28 with a tooth 29. On release of spindle 31 from its depressed position, springs (90), (93), Fig. 3, return it to its operative position in which an orientation member (35) on spindle 3 engages in a slot in the disc to ensure correct angular positioning thereof. If member (35) does not immediately become engaged on spindle return, tooth 29 engages a lug 32 on flange 30 to prevent rotation of spindle 31 so that rotation of the disc by a peripheral drive can bring member (35) and the disc slot into registration whereupon engagement between the two is effected by the spring (90), (93) and lug 32 is released from tooth 29.
Patent GB-417512-A (GB)
Title: Improvements in and relating to valves
IPC: F16K27/04
Filed: 1933-03-29
Abstract: 417,512. Valves. RAPPOLD, H., 22, Viktoriastrasse, D³ren, Rhineland, Germany. March 29, 1933, No. 9510. [Class 135.] The closure member of a slide valve for heated fluids consists of a thin archec steel plate h and a ring k. The plate may be welded tc the ring (Fig. 1, not shown) ; or it may be movably attachec by lugs o on the plate engaging in a groove p on the ring, Fig. 2 ; or its periphery may movably engage in a groove formed between two parts of the ring which are subsequently secured together (Fig. 3, not shown). The seatings c, d are formed of dished rings. The casing may have a refractory lining.
Patent GB-1386365-A (GB)
Title: Calculator
IPC: G06C1/00
Filed: 1972-03-01
Abstract: 1386365 Calculating apparatus; transfer mechanism W KASNER 1 March 1972 9616/72 Headings G4B and G4D A calculator includes digit wheels 90a, 90b etc. (Fig. 9) and transfer wheels 92a, 92b etc. Each transfer wheel meshes with only the higher order wheel of its two associated digit wheels; to this end the teeth of wheels 92a, 90b, 92c, 90d etc. are in one plane and the teeth of wheels 90a, 92b, 90c, 92d etc. are in another plane. Pins 104 on each transfer wheel co-operate with a single long tooth 106 of only the lower order of the two digit wheels associated with the respective transfer wheel. Thus upon a complete rotation of, for example, digit wheel 90a, tooth 106a cooperates with a pin 104a to index transfer wheel 92a, and thus meshing digit wheel 90b, through one tenth of a revolution. A spring 70 locates the digit wheels in their adjusted positions. Levers 110a prevent overrun of the transfer wheels. Each digit wheel is formed with holes 91 engageable by a stylus (not shown) for number entry. The stylus is inserted through an arcuate slot 80 or 82 (Fig. 4), formed in respective opposite sides 30, 32 of the calculator casing, depending on whether addition or subtraction respectively is to be made. Fig. 4 shows the generally flat casing in opened-out condition, the sides 30, 32 (which are normally superposed) being connected by a hinge section 34. The arcuate slots are numbered as shown in Fig. 4, which also shows windows 84, 86 for viewing the numbers borne by the digit wheel teeth. The array of numbers relative to their associated arcuate slots is the same on both sides of the casing. The casing is formed with a tongue 36, which may be inserted in a pocket of a cheque-book wallet, Figs. 1 and 2 (not shown).
Patent GB-909452-A (GB)
Title: Improvements in small current transistor amplifiers
IPC: H03F3/30
Filed: 1961-03-16
Abstract: 909,452. Transistor amplifiers. UNITED STATES ATOMIC ENERGY COMMISSION. March 16, 1961 [April 20, 1960], No. 9634/61. Class 40 (6). A transistor amplifier for input signals of the order of 10<SP>-N</SP> amp., where N is greater than 8, comprises a common emitter input stage characterized in that the ratio of the current amplification B with an input current of 10<SP>-N</SP> amp. to the collector current Iceo with the base open-circuit at an emitter-collector voltage of 0.5 v., is at least 10<SP>-N</SP>. A NPN transistor having the above characteristic is selected by making tests on a batch of conventional transistors and is used as the first stage T 11  of an amplifier, Fig. 3. The collector of T 11  is directly connected to the base of a second selected NPN transistor T 12  characterized by a ratio of B 1 /Ic having a magnitude at least 1/Iceo, where Ic is the collector current flowing in the second stage for an input current equal to Iceo of the first stage, and B 1  is the current amplification at a base current equal to the value Iceo. The emitter of T 12  is directly connected to the base of a third NPN transistor T 13  of conventional type, the output of which is connected via a PNP transistor T 14  to two series-connected NPN transistors T 15 , T 16 . Phase shifting CR networks 17, 18 and 19, 20 are provided to stabilize the amplifier at high frequencies, and the overall gain of the amplifier may be controlled by adjusting the value of the resistor 28 in the negative feedback path. Variable resistor 29 is provided to set the output to zero with zero input.
Patent GB-127731-A (GB)
Title: Improvements in Stop Mechanism for Talking and like Machines.
IPC: G11B17/02
Filed: 1918-06-12
Abstract: 127,731. Marks, E. C. R., (Columbia Graphophone Manufacturing Co.) June 12. 1918. Actuated by speed regulators; periodic.-Talking and like machines are automatically stopped at the end of a reproduction, or upon a reduction of the speed of the machine, by the engagement of two members, one of which moves proportionally to the feed movement of the tonearm, the other being actuated at a determined speed independently of the motor of the machine. The engagement of the two members may close an electric circuit and energize an electro-magnet for releasing a brake or stop lever. Fig. 4 is a part plan of machine, and Fig. 5 is a detail plan of the co-acting members. An arm 21 secured by a ring 30 to the vertical portion ot the tone-arm 15 carries a pin 39 engaging a slot in a sector-shaped plate 22 pivoted loosely on a shaft 28. A slight braking-action is exerted on the plate by a spring 34. The plate 22 carries an upright pin 40 and an insulated post 36 through which is passed a contact-screw 37. Between the pin 40 and the screw 37 lies an arm 23 driven by a friction washer 33 from the shaft 28, which is rotated at a determined speed by an independent motor, for example, by a spring motor 35. The determined speed is preferably slightly less than that of the plate 22 during a normal reproduction. Thus, while the tone arm is travelling normally across a record, the arm 23 is out of engagement with the screw 37 and is driven by the pin 40. If the speed of the machine and tone arm is reduced, or if the tone-arm ceases to advance, the independent motor causes the arm 23 to leave the pin 20 and to engage the contact-screw 37. A circuit is thus completed through battery 24, electro-magnet 26, switch 45, and the machine frame. The magnet attracts its spring-controlled armature 42 and withdraws a pin 41 from engagement with a lever 19 which is then swung by a spring 20 into the position shown in dotted lines, and arrests the machine. At the same time the battery circuit is opened at the switch 45. When the tone-arm is returned to starting position the pin 39 first opens the contact 37 by engaging an extension 46 of the arm 23, and then returns the plate 22 and the arm 23 to their original position. The machine is re-started by operating the lever 19 until it engages behind the pin 41. The independent spring motor 35 is wound up by reciprocating a ratchet arm pivoted on a pin 47 and projecting beyond the turntable rim.
Patent GB-1089176-A (GB)
Title: Improvements in spot welding guns
Inventor: PEDLEY FRED
IPC: B23K11/31
Filed: 1965-03-08
Abstract: 1,089,176. Welding by pressure. MIDDLETON SHEET METAL CO. Ltd. March 4, 1966 [March 8, 1965], No. 9679/65. Heading B3R. A spot welder has two relatively movable portions each carrying an electrode with a handle pivoted on one portion and connected to the other portion to move the portions together or apart to bring one electrode into engagement with or withdraw the electrode from a component to be welded, supported by one bus-bar and to bring the other electrode into engagement with or withdraw it from another bus-bar. An upper portion A carries an electrode a at its upper end and carries at its lower end a cylindrical member a<SP>2</SP> extending into the upper end of a lower portion A<SP>1</SP>, a lower electrode a<SP>3</SP> being carried on a screw D for adjustment in a rubber bush d<SP>1</SP> in the lower end of the lower portion A<SP>1</SP>. Laminated strips d connect the two electrodes and a handle B pivoted to the upper portion A has an arcuate slot b engaging a pin b<SP>1</SP> on the lower portion A<SP>1</SP>. The welder is arranged between a lower bus-bar C, a pin a<SP>4</SP> on the lower electrode engaging one of a number of locating recesses c in the bus-bar, and the upper electrode a engages the work 1 through a hole in the plate C<SP>2</SP>, a further bus-bar C<SP>1</SP> engaging the work. In a modification the lower electrode is carried adjustably on a lower bar and the upper electrode is carried on an upper bar carrying downwardly extending pillars engaging guide cylinders upstanding from the lower bar. The upper bar is connected to a bracket having a lug through which slides a spindle extending from the adjusting screw and a handle is pivoted to the bracket and to a lever pivoted to the upper end of the spindle.
Patent GB-1427098-A (GB)
Title: Rotary-piston internal combustion engines and apex seal therefor
IPC: F01C19/02
Filed: 1974-03-05
Abstract: 1427098 Apex seals NISSAN MOTOR CO Ltd 5 March 1974 [8 March 1973] 9776/74 Heading F1F An apex seal comprises at least two abutting parts having inclined end-faces along which, the two parts are in sliding engagement and a recess on a side face of the seal extending along the interface between the two parts from the bottom of the seal so as to allow pressure to be exerted on the underside of the apex seal when it is located in a rotor of a rotary piston I.C. engine of the epitrochoidal type. The recess is located on that face of the apex seal which, in use, is the leading one. As described the apex seal comprises three parts 18a, b c with complementary sloping end surfaces with two recesses on its leading surface which are formed by chamfering a sloping edge of either the ends 18b and c or the two ends of intermediate part 18a. Alternatively, each of all the respective sloping edges of the three parts 18a, b, c maybe chamfered and so co-operate to define the two recesses in the leading face of the seal. In an alternative embodiment triangular shaped recesses are formed in the end parts 18b and c.
Patent GB-802615-A (GB)
Title: Improvements in hydraulic extrusion presses
Inventor: BILLEN PETER
IPC: B30B15/24
Filed: 1957-03-26
Abstract: 802,615. Extruding. SCHLOEMANN A.G. March 26, 1957, No. 9825/57. Class 83 (4). [Also in Group XXIX] An hydraulic extrusion press, particularly for sheathing cables, has a pair of rams 4, 4a adapted to move simultaneously in opposite directions 3 in a billet container 1 for extruding the billets through a die 2, the rams being actuated by hydraulic pistons 5, 5a supplied with pressure liquid by separate pumps 17, 17a which are hydrostatically similar and are driven by a common motor 14. This arrangement is alleged to maintain equal extrusion speeds from the two rams. The billets are first compressed within their container by opening valves 8, 8a through which pressure liquid is supplied from an accumulator 9 fed by a pump 11 driven by an electric motor 13. Thereafter extrusion is effected by pressure liquid supplied by the pumps 17, 17a feeding through non-return valves 20, 20a and pipes 19, 19a. Additional pairs of pumps 22, 22a and 23, 23a driven respectively by common motors 15, 16 and connected in parallel with the pumps 17, 17a, are used when high-speed movement of the press rams is required. A safety valve 24 is connected between the pump delivery pipes 19, 19a and a speed regulating means 25 is used for compensating any slight difference in the output of the pumps. The latter may have their delivery continuously variable by interconnected control means or the delivery of the two pumps may be varied differentially in dependence upon difference in speeds of the two press rams.
Patent GB-426233-A (GB)
Title: Improvements in and relating to the control of light for television purposes and forthe optical recording of sound
IPC: G02F1/03
Filed: 1934-03-29
Abstract: 426,233. Light-valves. SUDDEUTSCHE TELEFON-APPARATE-KABEL-UND DRAHTWERKE AKT.-GES. TEKADE, 33, Nomenstrasse, Nuremberg, Germany. March 29, 1934, No. 9826. Convention date, July 5, 1933. [Class 40 (iii)] In a light-valve using the direct electro-optical doublerefraction of solid crystals, a plurality of small crystals g, ground to the same thickness and provided with thin metallic electrodes, are arranged in parallel in the path of rays from an objective lens b. The electrodes consist of metallic foil placed on a conducting layer of metal provided on the crystals by cathodic disintegration. The arrangement prevents detrimental light from the sides. The prisms of the polariser f and analyser h consist of a number of small crystals. Detrimental ultra-violet rays are eliminated and the colour of the reproduced picture corrected by a filter d. The tube a, in which the parts are mounted, is of insulating pressed material. Specification 422,370 is referred to.
Patent GB-576994-A (GB)
Title: Improvements relating to wire tensioning devices for use in coil winding machines
IPC: B65H59/04
Filed: 1944-05-22
Abstract: 576,994. Controlling delivery of wire from drums. MICAFIL, Ltd. May 22, 1944, No. 9841. Convention date, June 18, 1943. [Classes 120 (ii) and 120 (iii)] A wire tensioning device for a coil winding machine in which the supply drum a is braked or not, depending upon the tension of the wire n, the coil being wound being mechanically driven, an adjustable spring o being provided the extension of which is controlled by the tension of the wire n, the spring o biassing a lever system supporting a roller m, which guides the wire to the coil, is characterised in that between the lever k and the spring o a variable transmission element i is located which will cause the wire tension to remain constant independently of the amount of travel of the free end of the spring o. As shown, the element i comprises a lever, with an eccentric lower surface, attached to a spindle j, the lower surface bearing upon a roller p urged against it by the spring o. The brake band f is connected to the lever i by links g, h so that as the lever k moves downwardly, with increasing tension in the wire a, the brake band f is slackened and vice versa. The tensile force in the spring o is indicated on a scale a which is calibrated in terms of maximum wire diameters. The ratio of the movement of the brake band f to the movement of the roller m is arranged to be at least 1:50. The brake band may be of woven material and the brake disc may be provided with grooves.