baber/WOPTO huggingface dataset:
Patent GB-851372-A (GB)
Title: Driving device for moving the sound head of dictating machines
Inventor: MATUSCHE HEINZ
IPC: F16H31/00
Filed: 1957-09-16
Abstract: 851,372. Magnetic recording and reproducing apparatus. SUD-ATLAS-WERKE G.m.b.H. Sept. 16, 1957, No. 29152/57. Class 40 (2). [Also in Group XXIV]  In a device for driving the magnetic sound head 3 of a dictating machine (a) continuously in one direction and (b) step-by-step in the opposite direction including a continuously rotating lead-screw 16 detachably coupled to a carriage 5 carrying the head, the carriage has a rolling gear-wheel 17 engageable with the leadscrew, the wheel 17 normally being locked by a detent 27, Fig. 3, for movement (a), but being rolled along the lead-screw for movement (b) by a step-by-step drive mounted on the carriage. The detent 27 may engage the wheel 17 direct; as shown, it engages a ratchet wheel 26 fixed to the shaft 18 of the wheel 17 ; the wheel 26 is stepped round by a spring-loaded pawl 28 pivoted at 31 on an arm 29, which carries the detent 27 and is integral with the armature 23 (pivoted at 24) of an electromagnet 22 mounted on the carriage 5 and energized through a push switch e.g. mounted on the dictating machine microphone; alternatively, the arm 29 may be mechanically or hydraulically actuated. The pitch of the teeth on the ratchet wheel 26 is so related to the lead-screw pitch and the gearing between the lead-screw and the record drum 1, that each actuation of the arm 29 steps the carriage back by an amount equal to the pitch of the record track on the record 2.  The eccentric pivot 31 is adjusted to give a maximum idle movement of the pawl 28 before it reaches the bottom of the tooth gap in the wheel 26; the subsequent working part of the pawl stroke is limited by an adjustable stop 36 so that the wheel 26 is driven back by one complete tooth and does not turn further when the detent 27 re-engages on de-energization of the magnet 22; the tooth aperture angle of the wheel 26 is 60 degrees and the angle subtended at the point of contact of the detent 27 with the teeth by the line joining the axes 18, 24 is 105 degrees, whereby the detent engages fully without catching on the tooth sides, but is not forced out against the spring 37 by the tendency of the wheel 26 to turn under load, and the teeth of the wheel 26 are suitable for the pawl 28. The carriage 5 is longitudinally guided by a tube 13 and bar 14, and the control mechanism frame 19 is pivoted at 20 whereby pressure on a button 21 against a spring 21a disengages the wheel 17 from the lead-screw for manual positioning of the carriage. The sound head gap is aligned by adjustment of the head 3 about its pivot 11 in a holder 7 by a screw 12, the holder 7 being pivoted at 6 to the carriage 5 and pressed towards the record by a leaf spring 8 bearing on an adjusting screw 10.
Patent GB-644447-A (GB)
Title: Improvements relating to the manufacture of mouldable friction compounds
IPC: F16D69/02
Filed: 1947-11-01
Abstract: A friction element for brakes and clutches is made by mixing a frictional filler with a 65-80 per cent solution of an oil-modified thermosetting resin in benzol, alcohol or toluol and with a 12-20 per cent solution of synthetic rubber in a petroleum solvent, extruding the plastic mixture, evaporating the solvents at a temperature too low to set the resin, and moulding the shaped mixture under heat and pressure.  The ratio of thermosetting resin to rubber is between 7 : 1 and 1 : 1.  Synthetic rubbers mentioned are copolymers of butadiene and styrene or of isoprene and isobutylene.  The thermosetting resin mentioned is a phenolformaldehyde resin modified with blown linseed, castor, chinawood, or oiticica oil or mixtures thereof.  Three compositions are described.  In addition to the two binders they include short asbestos fibre, graphite or a friction powder from cashew liquid, barytes, sulphur, zinc oxide and hexamethylene tetramine, and, in one case, Gilsonite.  Preferably the dry ingredients are mixed first, and the synthetic rubber cement added in a dough mixer, followed by the resin solution, or the rubber cement and resin solution are mixed and the dry ingredients added.  The product is extruded, air-dried and solvents evaporated in an oven at relatively low temperatures, e.g. 150 DEG  F.  It is then compacted between unheated press platens or cold rolls, and then moulded with heat and pressure insufficient for complete curing.  For brake linings, the partially cured slabs are cut, ground, warmed to make them flexible, and clamped in baking forms which retain them in the desired shape during final curing.
Patent GB-760884-A (GB)
Title: Mountings for guide blades in axial flow turbines and compressors
IPC: F01D9/04
Filed: 1954-10-11
Abstract: 760,884. Mounting turbine and compressor blades. SULZER FRERES SOC. ANON. Oct. 11, 1954 [Oct. 23, 1953], No. 29191/54. Class 110 (3). In an axial-flow turbine or compressor, a circumferential groove 1 is formed in the stator or casing 2, 2<SP>1</SP> for the reception of blade roots 5 and filling or spacer pieces 7, the groove being wider at least at one point near the bottom thereof than at a point further from the bottom and the maximum length of the blade roots in an axial direction is less than the minimum width of the groove. A spacer ring 10 is inserted between one side wall of the groove and the adjacent sides of the blade roots and is of such a thickness that the blade roots are permitted limited movement in the groove in an axial direction. The circumferential groove may alternatively be formed by suitably-shaped rings mounted on the inner surface of the blade carrier. The casing is formed in two halves 2, 21 and one side 3 of the groove 1 lies in a plane normal to the axis of the machine while the other side lies on the surface of a cone. The sides of the blade roots 5 and spacer pieces 7, also of the half spacer pieces 11, are correspondingly shaped. The spacer ring 10 is also formed in two halves which are disposed between the side of the groove and the sides of the blade roots and spacer pieces which lie in a plane normal to the machine axis. Pins 12 are disposed in short circumferentially-directed bores formed in the ends of the spacer ring halves and the half-spacer pieces 11 to prevent relative circumferential movement of these parts. Also bolts 13 having large heads are screwed into the casing halves 2, 21, the heads engaging recesses 15 formed in the half spacer pieces 11 to prevent circumferential movement of the parts along the groove. The sides of the blade roots may be parallel to the blade chord. Both side walls of the groove could alternatively be formed as fiat surfaces normal to the axis of rotation, one of the surfaces having in it a recess into which correspondingly-shaped projections of the blade roots and filling-pieces engage. Again one of the side walls of the groove could have a circumferential channel into which a wire ring is inserted so that it projects from the channel and fits into corresponding channels in one side of the blade roots and of the filling-pieces. Separate lengths of wire could be used instead of a complete ring.
Patent GB-827749-A (GB)
Title: Reaction tank and thermo-regulator system
Inventor: ETTER JOSEPH A
IPC: B01J19/18
Filed: 1956-09-25
Abstract: <PICT:0827749/III/1> <PICT:0827749/III/2> <PICT:0827749/III/3> An improved apparatus for carrying out a chemical reaction comprises a reactor (see Figs. 2 and 3), vertically disposed cooling coils in said reactor, an accumulator disposed above said reactor, inlet conduit means connecting said accumulator and said coils, outlet conduit means connecting said accumulator and said coils, a liquid level control valve connected to said accumulator for controlling the level of liquid therein, a source of liquid refrigerant connected to said accumulator through said liquid level control valve whereby a substantially constant level of liquid refrigerant will be maintained in said accumulator and such liquid will flow by gravity into said coils, said refrigerant returning to said accumulator through said outlet conduit means, a suction line connecting said accumulator with said refrigerant source and means operable in response to temperature changes in said reactor to control the temperature in said coils in accordance with the heat produced by the reaction process.  The cooling system of the improved apparatus has a series of evaporators or cooling coils with relatively large heat transfer surface areas (Figs. 4 to 9) and of a character particularly appropriate for use in pressure type reactors into which the only access is the usual relatively small manhole.  Heat transfer tubes are suspended within the several reactors with controls for the liquid refrigerant in the coils of each reactor operating in accordance with pressure or/and temperature <PICT:0827749/III/4> <PICT:0827749/III/5> <PICT:0827749/III/6> <PICT:0827749/III/7> <PICT:0827749/III/8> <PICT:0827749/III/9> conditions within the reactor, it having been determined that vertically disposed uniflow fluid coils supplied from a single header at the top as well as a single outlet header and with such cooling unit coils each composed of individual groups of parallel tubes, as for example, three in number, located so that a plane through these tubes is normal to the radius of the shell of the reactor are particularly suitable for this use.  The cooling tubes in an upright staggered pattern permit maximum contact with the materials undergoing reaction and contribute to the efficient agitation of such materials by means of agitator elements disposed within the reactor and driven by an independent exteriorly mounted motor by means of a shaft extending through a stuffing-box in the top wall of the reactor.
Patent GB-617457-A (GB)
Title: Improvements in or relating to the separation of air
IPC: F25J3/04
Filed: 1946-10-02
Abstract: 617,457. Air separating. BRITISH OXYGEN CO., Ltd., and HOUSEMAN, C. R. Oct. 2, 1946, No. 29311. [Class 8 (ii)] A process for separating from air an almost pure liquid oxygen fraction and a krypton rich liquid oxygen fraction comprises introducing liquid air at 13 to a column 10 to form a nitrogen rich liquid fraction at the top and an oxygen rich liquid fraction at the bottom, introducing there fractions through valved conduits 15, 18 at the top and at a point lower down of a rectification column 11, and thereafter withdrawing substantially pure liquid oxygen through a conduit 22 at a point a few plates above the base of the column 11, and a krypton rich liquid oxygen fraction from the bottom through a conduit 24. This latter fraction may be further concentrated to about 4,000 parts of krypton per million by passage down an auxiliary column 27 having a nitrogenfed boiler 28, the krypton rich fraction being led away through a conduit 33 and the lean gas being returned through a conduit 34 to the rectification column 11 at a point below the duct 22.
Patent GB-225878-A (GB)
Title: Improvements in or relating to protective device for dynamo-electric generators
IPC: H02K11/25
Filed: 1924-12-06
Abstract: 225,878. Siemens - Schuckertwerke Ges. Dec. 8, 1923, [Convention date]. Drawings to Specification. Protective or safety devices, auxiliary; indicators and alarms, applications of.-Protective devices for dynamo-electric generators are actuated by fluctuations of pressure in the air or other gaseous cooling medium, and operate to switch off the excitation and disconnect the generator from the line. Non-enclosed generators may be provided with sheet-metal hoods to take up the pressure waves for actuating the safety device. According to the Specification as open to inspection under Sect. 91 (3) (a), the invention may be applied to other electrical machines or apparatus, and the pressure fluctuations may be utilized merely to indicate disturbances. This subject-matter does not appear in the Specification as accepted.
Patent GB-1378031-A (GB)
Title: Electronic maintenance circuit for an oscillating type motor element
IPC: G04C13/02
Filed: 1972-06-23
Abstract: 1378031 Electronic timepieces BERNARD GOLAY SA 23 June 1972 [29 June 1971] 29468/72 Heading G3T A drive circuit for maintaining oscillations of a mechanical oscillatory member, e.g. a timepiece balance, comprises a coil 3, Fig. 2, B 3 , Fig. 3, which functions both as a pick-up and drive coil and co-operates with a magnet 4 on a balance beam 1. A diode D 1  responds to the level of voltage induced in the coil by relative movement of magnet 4, such that, when the induced voltage is zero, current from a D. C. source passes via R 1 , D 1  to the coil. However, when the induced A. C. voltage U 1  is positive and exceeds a level S, the diode D 1  is blocked so that current passes via R 1  and the base/emitter path of a transistor T 1 . T 1  conducts and a voltage U 2  drops to zero so that a transistor T 2  will conduct assuming that at the same time a transistor T 3  is rendered conductive by pulses at voltage U 3  fed from a pulse generator (not shown) via R 4 . T 2 , T 3  form an AND gate and with T 2 , T 3  conducting substantially the full supply voltage will be applied to B 3 , until the pulse voltage rises to U 3 . As long as the voltage induced in the coil is positive the coil will receive a drive pulse each time the pulse generator voltage passes through zero, i.e. during each positive half-period of the rectangular wave current, and acting in the same direction as the induced voltage. There may be five to ten drive pulses during each period in which the induced voltage is positive, the frequency of the pulses being arranged to be five to ten times that of the oscillatory member. By varying the mark/space ratio of the pulse generator output pulses the amount of power per drive pulse is variable. A capacitor may be used in place of diode D 1 , Fig. 4 (not shown), or alternatively bi-polar or M.O.S. transistors (not illustrated).
Patent GB-504794-A (GB)
Title: Improvements in the production of gaseous atmospheres for use in the heat treatment of steel and other metals
IPC: C21D1/76
Filed: 1937-10-29
Abstract: 504,794. Furnace atmospheres. BRAYSHAW FURNACES & TOOLS, Ltd., BRAYSHAW, S. N., and RUSHTON, F. Oct. 29, 1937, No. 29555. [Class 51 (ii)] In an apparatus for the production of a gaseous mixture containing carbon monoxide in excess for use as a furnace atmosphere in the heat treatment of metals, by the combustion of gas with insufficient air, the temperature of combustion is maintained by supplying additional heat to the combustion chamber either from a separate combustion chamber surrounding it, or by internally-fired combustion tubes passing through it. In the constructions shown in Fig. 1 the combustion chamber A for a correctly-proportioned mixture of gas and air supplied through the inlet pipe a, is surrounded by a combustion chamber C fired by a burner c. The offtake flue B for the atmosphere gas surrounds the inlet pipe a so that the ingoing mixture is preheated before combustion. Modifications of this apparatus are described in which (a) Fig. 2 (not shown), the waste gases from the chamber C are exhausted through a flue surrounding the flue B in order to maintain the temperature of the atmosphere gas when it is to be used immediately; (b) Fig. 3 (not shown), the ingoing mixture is not substantially preheated, but the temperature of the atmosphere gas is maintained as in (a) ; (c) Fig. 4, not shown, the ingoing mixture is preheated by the waste gases from the combustion chamber C; (d) Fig. 5 (not shown), a connection is provided by which a regulable proportion of the combustion products from the chamber C can be mixed with the atmosphere gas, and (e) Fig. 6 (not shown), gas and air are supplied to the combustion chamber A through concentric nozzles so that mixture takes place immediately before combustion, the gas preferably being supplied through the inner and cooler nozzle. In the construction shown in Fig. 9 additional heat is supplied to the combustion chamber A by means of a ring of tubes E internally fired by gas or oil burners. A baffle A<1> is placed between the gas and air inlet a<1> and the atmosphere gas outlet a<2>, and radial partitions a<8> are provided to direct the combustion products over the tubes E <1>. In other forms of apparatus the combustion chamber A is heated by a single central tube, Figs. 7 and 8 (not shown) ; and a U-shaped chamber A has tubes passing through it at right angles to the direction of flow of the combustion products, Figs. 11 and 12 (not shown). Specification 455,486 is referred to.
Patent GB-991923-A (GB)
Title: Improvements relating to manually resettable thermal cut-outs
IPC: H01H37/32
Filed: 1961-08-16
Abstract: 991,923. Thermal switches. FIRTH CLEVELAND Ltd. Aug. 16, 1961 [Aug. 16, 1960], No. 29578/61. Heading H2B. A manually - resettable thermal cut-out includes a box-like housing with an opening at the top across which a rectangular bimetal strip is mounted to receive heat directly from a heater (not shown) without obstruction by parts of the cut-out. The bimetal strip has a downwardly-extending arcuate projection 5 at its free end which prevents a leaf-spring 6 mounted on the side of the housing 1 from moving in the direction L to break contacts 18, 19, in the heater circuit. Leaf-spring 6 has bifurcated end projections 8, 9 with projection 8 engaging projection 5 of the strip and projection 9 being bent at an angle across one comer of housing 1 so as to be acted on by a reset pin 10, which can be slidably mounted in any of three positions in a bracket 11 integral with housing 1. When the bimetal strip is heated projection 5 releases projection 8 of spring 6 and the contacts 18, 19 separate. For resetting the cut-out pin 10 forces back spring 6 by engaging projection 9 to allow the free end of the strip to return to its latching position. The tension in the strip is adjustable by a screw 14 for determining the operating temperature. Lugs 15 on the housing cooperate with projections 16 to enable the housing to be mounted, e.g. upon a control panel.
Patent GB-302023-A (GB)
Title: Improvements in liquid dispensing apparatus
IPC: B67D3/04
Filed: 1927-11-05
Abstract: 302,023. Costa, L. L. da. Nov. 5, 1927. Urns. - In apparatus for mixing liquids in constant proportions, more particularly a liquid with some flavouring ingredient, comprising a main reservoir in which the head of the liquid is maintained constant, and an auxiliary reservoir for the flavouring ingredient with means for equalizing the flow from the latter as the head decreases, the streams from the two reservoirs passing to a single faucet, the equalizing means consists of an outlet pipe having two openings, one controlled by a spring responsive to the head, and the other constantly open. The main reservoir 10, Fig. 1, is supplied by a ball-cock 11 and discharges through the faucet 16 which is connected by a pipe 24 to the auxiliary reservoir 23. The valve controlling the flow of the pipe 24 consists of a spring 30, Fig. 2, co-operating with a cut-away part of a pipe 27; a sleeve 34 controls the opening 33. As the head of liquid in the reservoir decreases, the pressure on the reed 30 lessens and the size of the aperture increases. As shown in Fig. 6, the spring member 30<1> can be adjusted by a screwed plug 30".
Patent GB-1430836-A (GB)
Title: Clamping of flexible printing plates
IPC: B41F27/12
Filed: 1973-06-22
Abstract: 1430836 Securing flexible printing plates A HAUG 22 June 1973 [27 June 1972] 29653/73 Heading B6C  Flexible printing plate 1 is held on cylinder 2 (or alternatively on a planar mounting block) by engagement of shaped holes 7 in its ends with inward-tapering studs 3, 8, respectively secured to the cylinder and to a rotable spindle 9 which can be moved along the cylinder by a nut 15 rotated by a worm-wheel. Rotation of the worm-wheel displaces the spindle, and makes possible exact alignment of the printing plate.
Patent GB-691456-A (GB)
Title: Improvements in or relating to buildings slabs
IPC: E04C2/18
Filed: 1951-12-19
Abstract: 691,456. Building slabs. SCHAIK, H. N. VAN. Dec. 19, 1951, No. 29718/51. Class 87(i) A building slab comprises reed stalks 1 loosely bound together by wires, those 2 on one face being continuous and those on the other face consisting of a number of pieces 9 of L-form of which one limb extends through the slab and is connected to a wire 2 and the other limb being connected to the apex of an adjacent piece. The wires 2 are extended at 3 along the side edges of the slab and then outwardly at 4 to engage over roof battens 5.
Patent GB-661547-A (GB)
Title: Improvements in or relating to chemical heat generating devices used in permanently waving the hair
IPC: A45D7/06
Filed: 1949-11-21
Abstract: 661,547. Heating by chemical action MICHAELS, B., and MICHAELS, H. P. Jan. 16, 1950 [Nov. 21, 1949], No. 29749/49. Class 64(ii) Heat for use in hair waving is generated by chemical action between bichloride of mercury, salt (sodium chloride) and hydrogen peroxide, with which an absorbent sheet 3 is impregnated, and a pair of foil leaves 1, 2, e.g. of aluminium, which enclose the sheet. The device is activated by moistening of the sheet 3 with hydrogen peroxide before placing between the metal leaves which may be stapled to backing sheets of paper 4 or constitute one folded foil sheet 'stuck to the backing sheets. Table salt or salt crystallized from sea water is used in the chemical mixture.
Patent GB-809545-A (GB)
Title: Improvements in and relating to mobile storage and like units
IPC: A47B53/02
Filed: 1955-10-19
Abstract: 809,545. Storage systems. WEATHERBY, R. S. Jan. 21, 1957 [Oct. 19, 1955], No. 29835/55. Class 20(1) Mobile unit storage equipment comprises a false floor or frame for supporting a plurality of mobile units, such as filing cabinets, storage shelves or cars, the floor being mounted for tilting about an horizontal axis. Units 3 mounted on wheels, casters, ball or roller bearings are free to move over a false floor 1 which is tiltable about the axis 4 by means of the lever 8 working an eccentric 5. The units may be selectively retained in certain positions by the operation of the levers 9 to engage stops 12 or by adjustable stops 13 (see Fig. 5, not shown), disposed over the false floor to engage corresponding slots in the units. The floor is provided with slots, guides or rails along which the units run and it may be tiltable about two mutually perpendicular horizontal directions. A motor or power shaft may be employed to operate the retaining mechanisms.
Patent GB-1388736-A (GB)
Title: Cable fixture
IPC: F16G11/04
Filed: 1972-06-26
Abstract: 1388736 Cable clamps BENDIX CORP 26 June 1972 [25 June 1971 (3)] 29869/72 Heading H2E [Also in Division E2] A device for supporting and securing wires at the region in which they enter an electrical connector comprises a conduit 10 e.g. of plastics material, one end of which may be radially compressed to grip the wires, e.g. by a belt 50 of plastics material, Fig. 6 while the other end is non-deformable and mountable on the connector. In embodiments the conduit may be longer than shown and may have tapered slots or it may be formed without slots with the smaller end aperture being of a specific size to receive a predetermined number of wires and having the part 7 or parts 5 and 7 of a compressible material thus allowing usage with different numbers of wires. Alternatively the conduit may be formed with a rigid portion 10 and a cylindrical compressible portion, not therefore requiring slots, tightly fitting on to a shoulder 2 in the portion 10. In general the cross-section of the conduit may be of any shape, e.g. rectangular or octogonal, shoulders may be formed on the inside surface of the cylindrical portion of the conduit 10, to grip the wires, and axial grooves may be formed in the inside surface of the conduit thus restricting rotation of the cable.