baber/WOPTO huggingface dataset:
Patent GB-373835-A (GB)
Title: Improvements in and relating to electric switchgear installations
IPC: H02B5/06
Filed: 1931-07-17
Abstract: 373,835. Switchgear structures. FELTEN & GUILLE AUME CARLSWERK AKT.-GES., Mulheim, Cologne, Germany. July 17, 1931, No. 20507. Convention date, July 23, 1930. [Class 38 (v).] Instead of using solid enclosed bus-bars in connection with longitudinally disposed banks of draw-out switch gear short lengths of cable h, l, i interconnecting the switches with one another and with the incoming mains r, s, t are employed for the purpose. The lengths of cable may be of the oil-pressure type each section being enclosed in a pressure pipe. As shown for four three-phase horizontal drawout switches in line the fixed socket terminals of each switch are provided at the back with a double cable and joint which accommodates the end of one cable and the beginning of the next following cable section.
Patent GB-453972-A (GB)
Title: Improvements in and relating to processes for the treatment of the filaments of incandescent electric lamps
IPC: H01K3/02
Filed: 1935-07-18
Abstract: The diameter and cross-section of tungsten filaments for electric incandescent lamps are made uniform by heating the filament by passing an electric current therethrough in an atmosphere of tungsten carbonyl or molybdenum carbonyl.  In one method tungsten or molybdenum carbonyl is introduced in a solid or dissolved state into the lamp bulb, the air is exhausted from the bulb, and the bulb is heated to the temperature at which the metal carbonyl sublimes.  The filament is then heated by the electric current to a temperature above the decomposition temperature of its carbonyl atmosphere, whereby the separation of the pure metal and its deposition on the surface of the filament is effected. The gaseous products of decomposition are removed during this process.  The carbonyls may also be used in the form of solution, for example, as a solution in benzene, the heating temperature of the filament being kept below the decomposition temperature of the solvent if it is desired to prevent the formation of carbide on the filament.  By using molybdenum carbonyl instead of tungsten carbonyl an alloy can be formed with the tungsten of the filament. Specification 363,236 is referred to.
Patent GB-1382292-A (GB)
Title: Strip take-up device
IPC: G03B1/56
Filed: 1972-05-03
Abstract: 1382292 Threading webs EASTMAN KODAK CO 3 May 1972 [3 May 1971 (2)] 20599/72 Heading B8R A film strip take-up device having film leading edge threading means comprises a rotatable support member 19, Fig. 4, for receiving a reel 18 and control means 9, 24, 25, 30, Fig. 7, operable in a first mode to allow the take-up device to wind the strip S in response to detection by sensor means 21, of the presence on the member 19 of the reel 18 and, operable in a second mode to prevent operation of the takeup device in response to the detection by the sensor means of the absence of the reel R from the member 19. In operation following insertion of the reel R on the member 19 and closing a door (4, Fig. 2A) on the housing (2) of the device a guide member 9 forming a detector in conjunction with a roller 21 forming the sensing means is disposed in the first mode in which cam surfaces 28, 29 on the guide member 9 are out of contact with switch elements 27, 26 of normally closed microswitches 25, 24 such that actuation of a manual switch 30, Fig. 7, starts a winding motor 31 which drives a pair of feed rollers 33, 34 and the support member 19. The strip S is fed along a guide 38 at the free end of which the leading edge of the strip tilts a finger member 40 which closes the normally open element 43 of a microswiteh 41 to actuate a solenoid 44 which in turn tilts two further guide members 46, 47 towards the reel R to form an annular strip threading gap. When a few coils of the strip S have been wound up on to the reel hub H, tension in the strip S causes the strip portion S<SP>1</SP> to abut rollers 73, 74 and force an idler roller 78 to be displaced to a position 78<SP>1</SP> in which position a switch contact S1 closes a switch 80 to energize a relay 84. The relay opens the normally closed contact 84-3 to de-energize the solenoid 44 which swings the guide members 46, 47 to their phantom positions 46<SP>1</SP>, 47<SP>1</SP>. When a predetermined length of strip S has been wound on to the reel R the guide member 9 actuates the switch element 27 with its associated cam surface 28 to open the microswitch 25 and stop the take-up device. Stopping is assisted by de-energization of circuit-holding relay 85. Moreover, when the trailing end T, Fig. 6, has left the guide 38, the finger member 40 opens the micro-switch 41 tripping the relay 84 and stopping the take-up device. In the case of absence of a reel R on the support member 19 the guide member 9 abuts the square section 20 of the support member 19 (as shown in Fig. 1A) and a cam surface 29 on the guide member 9 opens the micro-switch 24 disabling the take-up device.
Patent GB-1465766-A (GB)
Title: Speed sensitive switching device
IPC: H02P23/00
Filed: 1974-05-09
Abstract: 1465766 Ignition systems; controlling the speed of an engine DUCELLIER ET CIE 9 May 1974 [22 May 1973] 20617/74 Heading F1B A speed sensitive switching device for controlling the speed of an engine comprises a tachometric generator A for supplying a voltage which is a function of the speed of the engine a comparator E, F connected to the generator and to a battery for comparing the voltage supplied by the tachometric generator with a reference voltage which is a fraction of the voltage of the battery, a switching component G, a first I and second K dividing bridge, the comparator having first and second stages of comparison and the first stage E comparing the voltage supplied by the tachometric generator with a reference voltage fixed by the first  dividing bridge I and determining a comparison threshold in such a way that when the voltage supplied by the tachometric generator exceeds this threshold the first stage triggers a second stage of comparison F for comparing the voltage from the first stage with another reference voltage fixed by the second dividing bridge K, thereby to cause triggering of the switching component G and means connected between the switching component and the first stage and conditioned thereby on triggering of the switching component to take a part of the voltage from the switching component and to return it to the first stage of comparison in such a way as to cause the response of this first stage and thus of the whole device to vary. When the speed approaches the limit speed, the potential at the base 2b increases and cuts off the transistor 2. The potential of the base 5b suddenly decreases and the transistors 5 and 10 become conducting. The winding 12a of the relay 12 is supplied with current and the relay contacts are closed. The primary 15 of the ignition coil is then short circuited by the resistance 14 and the potential created by opening of the contact breaker 16 is insufficient to cause sparks. The switching component G comprising the transistor 10 and the relay 12 may be replaced by a single power transistor. A thyristor may be substituted for the transistor 10 of the switching component.
Patent GB-810790-A (GB)
Title: Prefabricated alloy roadway
IPC: E01C9/08
Filed: 1957-07-01
Abstract: 810,790. Prefabricated roads. HOLMES, R. L. Sept. 23, 1957 [July 1, 1957], No. 20637/57. Drawings to Specification. Class 107 A road is made up of a number of rectangular grid-like elements fabricated from metal girders and beams. Sections of approximately quarter circle shape are used at road intersections and further sections are disclosed for forming curves in the road, these being truncated segments. The parts are assembled by hinge and pin joints. The road is provided with gutter sections for drainage.
Patent GB-776649-A (GB)
Title: Improvements in or relating to alloys of magnesium
Inventor: HUDDLE ROY ALFRED ULFKETEL
IPC: C22C23/02
Filed: 1953-07-25
Abstract: An Mg-base alloy resistant to the effect of air or oxidizing gases, particularly at elevated temperatures approaching the melting point of the alloy, has a composition within the following range .Be.0.002 - 0.1.per cent .Al.0.25 - 1.1.per cent .Mg.the remainder.  The alloy may also contain Ca 0.02-0.44 per cent.  The alloy may be prepared by adding a pre-alloy of Al and Be to molten Mg, the pre-alloy containing for example 5-10 per cent Be.  Ca may be added as such or as a pre-alloy of Mg and Ca.  The Provisional Specification describes also alloys of Mg with Be 0.002-0.1 per cent, with or without one or both of Ca 0.002-0.4 per cent and Al 0.25-3.0 per cent.
Patent GB-1321929-A (GB)
Title: Device for automatically indicating electrical signal amplitudes
IPC: G01R31/34
Filed: 1971-04-19
Abstract: 1321929 Measuring electrical quantities VOLKSWAGENWERK AG 19 April 1971 [30 Jan 1970] 20770/71 Heading G1U To check the way in which the amplitude of a first electrical signal (e.g. U), Fig. 1, changes as a second electrical signal (n) is varied the first signal is sampled when the second signal lies in particular amplitude ranges (A, B, C). The second signal is applied to a number of detector circuits 5, 6, 7, Fig. 2, each containing two threshold circuits 8-13 set to the upper and lower limits of a respective amplitude range A, B or C, so that when the second signal lies within one of these ranges a control signal is produced at a common output 2 to cause the amplitude of the first signal at that instant to be printed. The apparatus is used to test the operation of the generator and voltage regulator in a vehicle by checking the relationship between the generator output U and a signal n representing engine speed.
Patent GB-1070880-A (GB)
Title: Combined, multi-person touring and sleeping vehicle
IPC: B60P3/32
Filed: 1966-05-11
Abstract: 1,070,880. Vehicle with sleeping berths. G. HÍLTL. May 11, 1966 [Sept. 1, 1965], No. 20830/66. Heading B7B. A touring omnibus has a conventional arrangement of double seats on either side of a lower gangway but the upper deck has a honeycomb arrangement of sleeping berths in two rows one above the other and each provided with a window 58. The staircase to the upper deck passes utility compartments situated over the underfloor rear engine.
Patent GB-392020-A (GB)
Title: Improvements in conveyors
IPC: B65G17/06
Filed: 1932-07-25
Abstract: 392,020. Endless-chain conveyers. STREINE TOOL & MANUFACTURING CO., South Herman Street, New Bremen, Ohio, U.S.A. July 25, 1932, No. 20902. Convention date, Aug. 5, 1931. [Class 78 (i).] In a conveyer for metal sheets, the sheets rest on rollers 8 which normally are prevented from rotating by spring- pressed fibre washers 13. When a sheet is stopped, the chains 3 continue their forward movement, and the rollers, overcoming the braking action of the washers 13, roll along the surface of the stationary sheet. Each hollow roller ismounted in an inverted T-shaped saddle member 5 secured to the chain, and is formed with a central portion 9 of reduced diameter against the ends of which bear large steel washers 14. These washers turn with the roller around the fixed non-circular shaft 6, and are in braking engagement with the washers 13. A spring 11 presses the steel washers 12 against the washers 13. The washers 12 are slidably but non-rotatably mounted on the shaft 6. A pile of sheets may be conveyed between a pair of these conveyers.
Patent GB-621577-A (GB)
Title: Improvements in geared motor units
IPC: F16H63/30
Filed: 1946-07-12
Abstract: 621,577. Motor driving arrangements. SOC. D'APPLICATION DES BREVETS COTAL. July 12, 1946, No. 20950. Convention date, Jan. 12, 1945. [Class 35] [Also in Group XXIV] In a geared motor unit in which the motor and variable-speed gears are housed in a single casing structure and separated by a flange supporting the motor driving shaft, the transmission includes at least two trains of preselector epicyclic gears selectively engaged by the action of electromagnetic clutches. As shown, a reversing gear 65, 68, 69 is interposed between the motor shaft 4 and an intermediate shaft 41, the output shaft 13 being driven through two sets of epicyclic gears each controlled by a pair of electromagnets acting alternatively on an armature disc. Secured to the shaft 4<SP>1</SP> are a sun-gear 14 and an electromagnet 20. An outer, internally toothed wheel 15 carries the armature disc 16 and is free to rotate on this shaft, but may be made to rotate with the shaft by energizing electromagnet 20 or rendered stationary by an electromagnet 21 fixed to the machine casing 7. Planet-wheels 17 are mounted on a cage 19 which is rotatably mounted on the output shaft 13 and carries a further internally toothed gear 22. Rigidly fixed to the shaft 13 is a cage 27 carrying planet-wheels 25 which engage the outer gear 22-and an inner sun-wheel 23. This wheel is rotatable on the shaft 13 and fixed to a second armature disc 24 so that it may be held stationary or made to rotate with the shaft by energizing magnets 28 or 29 respectively. By selective energization of these magnets, four speeds are obtained. The reversing gear comprises a sun-gear 65 and an electromagnet 64 mounted rigidly on the motor shaft 4, and an armature 67 carrying the double planet gears 68 is freely rotatable on this shaft. The armature 67 may be held stationary or be caused to rotate with the motor shaft by energizing electromagnet 64 or 65 respectively, and by this means the internally-toothed gear 69 attached to the shaft 4<SP>1</SP> may be made to rotate in either direction. A stationary magnet 71 is adapted to act as a brake on an armature 70 fixed, in this arrangement, to the shaft 41. In a modification, the brake may act on the shaft 13. In Fig. 6 which shows a circuit diagram for controlling an arrangement having a reversing gear, the controller 75 for operating the gear-box is fed with D.C. from a transformer and rectifier 73, 74. The motor control relay 76, 77 with manual controls 78, 79 is fed from a further secondary winding on the transformer. If a reversible motor is used, the reverse gear is dispensed with and the control circuit has a reversing relay. A pump for circulating oil from a sump is described and the clutch surfaces are lined with friction material as described in Specifications 591,091 and 598,968, [both in Group XXIV].
Patent GB-640941-A (GB)
Title: Improvements in or relating to an assembly for use as a clutch or a brake
IPC: F16D25/04
Filed: 1947-08-01
Abstract: 640,941. Friction clutches. FAWICK, T. L. Aug. 1, 1947, No. 20964. Convention date, Sept. 22, 1945. '[Class 80(ii)] [Also in Group XXXIV] A friction clutch of the type described in Specification 603,075 comprising a series of circumferentially arranged shoes 11 adapted to be pressed into engagement with an annular braking surface by a fluid distensible element and including channel section rim members 13, 14 at each side of the shoes from which the torque is transmitted by transverse bars 25, having cylindrical section middle parts and ends stepped down to provide shoulders unobstructed for removal or reception of the members 13, 14, is characterized in that each shoe has a torque sustaining end surface 29 permitting it to be moved radially with relation to the adjacent bar for easy removal and a stop surface 30 engaging the bar for limiting the retracting movement of the shoe.
Patent GB-997888-A (GB)
Title: Improvements in or relating to the production of ethyl acrylate
Inventor: BOWEN BERTRAM ERNEST VICTOR
IPC: C07C69/54
Filed: 1963-05-25
Abstract: The process of the parent Specification for the production of ethyl acrylate in which ethyl acetate is used as entrainer is characterized in that ethyl acetate is recovered from the overhead fraction and is recycled with the feed in such an amount as to maintain a concentration of water in the reaction mixture of between 8 and 12% by weight.  The ethyl acetate is preferably recovered from the overhead fraction by azeotropic distillation or by extractive distillation followed by separation of the esters from the resulting fraction.  An example is given.
Patent GB-1465876-A (GB)
Title: Multiple pump
IPC: F04B53/10
Filed: 1975-05-16
Abstract: 1465876 Reciprocating pumps ROBERT BOSCH GmbH 16 May 1975 [10 July 1974] 21006/75 Addition to 1397918 Heading F1A A pump assembly comprises three pumps driven by a common shaft 25, two of the pumps being combined to form a double radial piston pump 14 having a common cylinder block 17 rotatable on a common pintle valve 16, and the third pump 41 being connected to the driving shaft 25 by a shaft section 38 passing through the pintle valve 16. The pump 41 is of the type having a vaned rotor 44 disposed in a ring 45 of adjustable eccentricity. Drilled or cast passages 32, 33 and ports 28-31 in the pintle 16 connect one set of radial cylinders 18 alternately to an inlet duct 36 and an outlet duct 34 and the other set of radial cylinders 21 alternately to the inlet duct 36 and an outlet duct 35.
Patent GB-517034-A (GB)
Title: Means for automatically inserting items of printed matter into packages
IPC: B65B61/20
Filed: 1938-07-15
Abstract: 517,034. Packaging; feeding webs. - ALLIED SUPPLIERS, Ltd., and SHORES, B. July 15, 1938. No. 21040. [Class 94 (i)] [Also in Group XVI] A device for automatically inserting items of printed matter into containers as they travel through a packaging machine comprises means for drawing a strip of material from a reel and feeding it forwards, a knife blade operable by the packaging machine, and means for stopping temporarily the strip-feeding means should a package fail to arrive in position to receive the piece cut off from the strip. The strip 10, Fig. 1, is fed from a reel 11 by a pair of rollers 15, 16 driven by a friction clutch. One member, 4, of the clutch is provided with four stops 7 whereby it can be stopped at every quarter of a revolution by a detent 8 operable by an electro magnet 9. The strip 10 is' fed by the rollers 15, 16 along a trough 21 past a pivoted knife 22 which is provided with a knob 24 and is upheld by a spring 25. The roller 16 is connected to its shaft through a pawl 29 and ratchet to enable the strip to be fed forward by hand for adjustment purposes. The strip is perforated, as shown in Fig. 3, and the items are separated by blanks 36 each bearing a line intended to register with a pointer 37 to enable the attendant to see.that the feed is synchronised accurately. The device may be used with a machine in which packages 41, Fig. 4, move step-by-step and come to rest beneath a ram 42 which compresses the contents. An arm 43 attached to the ram operates the knife 22 by the knob 24 and cuts an item off the strip so that it falls into a package. A switch 143 is arranged near the ram so that a package, as is moves away from the ram, closes the circuit of the magnet 9 and draws the detent 8 to one side, thus allowing the strip 10 to be fed forwards beneath the knife 22. Should a package be absent, switch 143 is not operated, the clutch member 4 is arrested by the detent 8, and the strip 10 is not moved so that an item is not cut off when the knife 22 is depressed. In a modified construction, the lower feed roller consists of a narrow rim 16a, Fig. 6, provided at intervals with wider portions 44. The strip has perforations along its centre line, and the feed is interrupted while a perforation lies between the narrow rim and the upper roller 17a. Feed takes place when a wider portion 44 makes contact with the .upper roller.
Patent GB-484377-A (GB)
Title: Improvements in or relating to electric contact devices
IPC: B61L1/04
Filed: 1937-07-29
Abstract: 484,377. Train actuated electric switches. VEREINIGTE EISENBAHNSIGNALWERKE GES. July 29, 1937, Nos. 21059 and 21060. Convention dates, July 29, 1936 and Dec. 17, 1936. [Class 105] [Also in Group XXXVII] Electric contacts are connected or disconnected by the movement of a column of conducting liquid under a pneumatic pressure or suction set up by the return to normal shape of a chamber which is connected to the liquid column by an air or gas column and which has been expanded or compressed by a mechanical action such as the passage of a vehicle wheel. For instance deflection of a railway rail depresses the upper wall of a chamber 3 but a non-return valve 4 opens to prevent any air pressure being set up by this action. When however the upper wall of the chamber returns to normal a suction is set up since the non- return valve 4 closes. This suction causes movement of the mercury column 8, 15 to make connection between contact pins 12, 13 and to break connection between contact pins 13, 14. The suction, is gradually destroyed by air leakage through a slightly permeable under-cover plate 11 ; a throttle 16 may also be provided for the mercury column. The rail deflection may instead depress the lower wall of the chamber, Fig. 2 (not shown), whereby on return to normal a pressure is set up.
Patent GB-238898-A (GB)
Title: Improvements in laminated friction clutches
IPC: F16D13/54
Filed: 1925-08-22
Abstract: 238,898. Aktiebolaget Avancemotor, (Assignees of Aktiebolaget J. V. Svensons Motorfabrik). Aug. 23, 1924, [Convention date]. Clutches, friction; reversing- g e a r i n g - In multiple-disc clutches engaged by a spring or springs with or without the use of multiplying-levers, the spring force is conveyed to the disc or levers by intermediate means which, on declutching, automatically transfer the force from the discs to a non-slidable part of the clutch. A controlling-sleeve. 15, Fig. 1, is connected by levers 10, fulcrumed in a recess in a cover 12, to the presser plate 9 and has a bevelled edge 21 co-operating with the conical heads 20 of tension links 18 pivotally carried by a floating ring 16. The clutch springs 17 bear on this ring and the cover 12, so that when the sleeve 15 is moved to the left from the mean position shown in Fig. 1 to engage the clutch, the links 18 convey the spring load to the sleeve, levers, and presser plate, as shown in Fig. 2<a>, but, on moving the sleeve to the right to declutch, the bevel 21 thrusts the heads 20 into engagement with a similar bevel 22 on the cover 12, so that the sleeve and discs are relieved and can readily be held disengaged. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a modification comprising two alternatively-engageable clutches 30, 31, Fig. 4 (Cancelled), with a common presser plate 33, employed in a reversing-gear. The levers 35 are connected by links 36 to a sleeve 37 having two bevelled surfaces for co-operation with the coned heads 45, 48 of tension and compression links 43, 47 respectively pivoted to floating rings 39, 40, between which are located the springs 41. The non-slidable member 44 also has two bevelled surfaces, the left-hand bevel being shown coacting with the head 48, while the preferably-adjustable head 45 engages the sleeve 37 to hold the clutch 33 in action. On sliding the sleeve the spring load is conveyed in reverse direction through the compression links 47 to the sleeve 37 and clutch 31. the heads' 45 resting on the part 44. This subject-matter does not appear in the Specification as accepted.
Patent GB-585749-A (GB)
Title: Improvements relating to furnace hearths
IPC: F27D1/00
Filed: 1945-08-20
Abstract: 585,749. Furnace hearths. LOWE, J. S. Aug. 20, 1945, No. 21225. [Class 51 (ii)] A furnace hearth comprises rectangular plates a with tongues b projecting from the lower parts of two adjacent sides and recesses c in the other two sides to receive tongues on adjacent plates, the joints between plates being at an angle to the charging and discharging motion to minimise the possibility of the charging forks or tongs getting into the joints. The corner plates d have an upstanding edge e, two sides f, g, at right angles to the edge and a diagonally disposed side j. The sides f, g have a recess h and projection i, respectively, and the side j has a recess k. The side plates have a raised edge m and square and inclined sides n, o, r, s, having recesses and projections to engage complementary projections and recesses. If desired, each side of the plates may have both a recess and a projection.