baber/WOPTO huggingface dataset:
Patent GB-781752-A (GB)
Title: Improvements in and relating to washing, mixing and like machinery
IPC: D06B5/00
Filed: 1952-07-12
Abstract: 781,752. Batch mixing-machines. COOP. N. D. Oct. 9, 1953 [July 12, 1952], No. 17629/52. Class 86 [Also in Group VIII] In a washing or mixing machine the required turbulence or agitation is produced by hydraulic pressure jets so placed in opposed pairs and so adapated to operate as to imitate the turbulence set up by the blades of one or more oscillating or reversing impellers. The example described is a laundry washing machine in which jets of washing liquid are produced by six central nozzles 40, 41 and six circumferential nozzles 50, 52 in a cylindrical tank 10 provided with a perforated false bottom 45 and hinged cover 13. The jets are set at an angle to the tank radius passing through the jet, and in pairs of an outwardly and inwardly directed jet adapted to converge on an imaginary circle dividing the annulus between the tank and the outwardly directed jets into two equal areas. Liquid is withdrawn from the tank 10 through a pipe 27 by a pump 22 and returned through pipes 19, 20 controlled by valves 24, 25. Pipe 19 leads to a chamber 17 connected to cylindrical chambers 38a containing the nozzles 40 and through a pipe 55 to chambers 49a containing the nozzles 50. Pipe 20 leads to a chamber 18 connected to chambers 38b containing the nozzles 41 and through a pipe 57 to chambers 49b containing the nozzles 52. Valves 24, 25 are opened alternately by a motor (not shown) so that liquid is injected through the jets 40 and 50 for a predetermined time (Fig. 4, not shown) and then through the jets 41 and 52 (Fig. 5, not shown). The timing may be such as to reproduce the effect of an impeller making a part-revolution or one or more complete revolutions first in one direction and then in the other. A supply pipe (Fig. 6, not shown) leading to. the suction side of the pump 22, is connected through a mixing valve to hot and cold supplies. After washing, a valve 29 is changed over and the pump 22 discharges the liquid to waste through a pipe 30. An overflow rinse is permitted by a ring of perforations 13c in the cover 13 and a vent 13a leading to a waste pipe. The operations may be carried out automatically by timer control means. The mixing valve may be arranged to provide a propressive change from hot to cold rinsing water. The bottom nozzles 40, 41 may be inclined upwardly to prevent articles settling on the bottom of the tank. An apertured shroud 42 surrounds the central nozzles. The liquid in the tank 10 may be heated by steam injection or by means of an oil immersed electric heater in the base of the tank. In a modification the jets are arranged to imitate the action of two or more impellers arranged on different levels, the rotation of each impeller being in the opposite direction to that of the adjacent impeller.
Patent GB-545055-A (GB)
Title: Improvements in or relating to the excitation control of alternating current generators
IPC: H02J3/42
Filed: 1940-12-13
Abstract: 545,055. Exciting arrangements for alternators ; automatic control of voltage. IGRANIC ELECTRIC CO., Ltd. Dec. 13, 1940, No. 17659. Convention date, Dec. 14, 1939. [Classes 35 and 38 (iv)] In an exciting arrangement for an alternator 1 which is automatically connected to the load circuit L1, L2 by a switch 10, when its voltage approaches normal and wherein regulation is normally effected by a vibratory regulator 7 operating to short-circuit a resistance 6 in the field circuit of an exciter 4, provision is made for weakening the excitation during the run up so as to prevent the alternator voltage reaching a value sufficient to cause closure of the load switch 10 until the speed and therefore the frequency of the alternator has reached normal value. This may be done by including a resistance 8 in the field circuit of the exciter which resistance is cut out by a switch 9 when the voltage of the alternator approaches normal whereupon full excitation under control of the regulator 7 is established. Closure of switch 9 also completes the closing circuit for load switch 10. In a modification, the voltage responsive switch 9 is adapted, during the run up, to open the circuit through the normal regulating resistance 6 and to complete the field circuit of the exciter through a high resistance.
Patent GB-453376-A (GB)
Title: Improvements in or relating to pile-drivers
IPC: H01K1/18
Filed: 1935-06-20
Abstract: 453,376. Pile drivers. DORNFELD, R., 30, Ob. Beutau, and HAAGE, K., 8, Turmstrasse, both in Esslingen-on-Neckar, Germany. June 20, 1935, No. 17673. Convention date, June 27, 1934. [Class 68 (ii)] In a pile-driver of the type comprising a piston or plunge] e resting on the pile, and a cylinder f reciprocating on it anc striking a cap b, the plunger e is secured to the cap b by means e.g., a cotter h and slot g, which afford axial play. The cap b is embraced by a guide piece or carriage c on a guide d. The Specification as open to inspection under Sect. 91 comprises a modification whereir the fall of the cylinder operatec a pump forcing a spray of fue into the cylinder. This subject matter does not appear in the Specification as accepted.
Patent GB-861051-A (GB)
Title: Method of placing tiles or similarly shaped ceramic blanks on a tunnel kiln car and means for carrying out the method
IPC: B65G67/14
Filed: 1958-06-03
Abstract: 861,051. Stacking tiles and ceramic blanks. GATZKE, P. June 3, 1958 [March 17, 1958], No. 17676/58. Class 94(1). [Also in Group XII] Tiles or ceramic blanks are stacked edgewise in layers on a tunnel kiln car 1 and the layers are separated by flat ceramic members and are clamped endwise by rods having end plates. The tiles 2 are supported on flat separator members 10 and are clamped transversely by plates 12, 14 on rods 11. A spring 15 compensates for any reduction in size during firing. A plate 13 engages a screw thread on one end of the rod 11. The rods are of a heat resisting metal. Specification 856,754 is referred to.
Patent GB-1049594-A (GB)
Title: Movement control servomechanism
Inventor: NUTTALL THOMAS CAYTON
IPC: H02P23/00
Filed: 1964-04-29
Abstract: 1,049,594. Automatic speed control. RANK BUSH MURPHY Ltd. April 29, 1965 [April 29, 1964], No. 17691/64. Heading G3R. A transducer 2 yields a train of pulses which, when member 1 is moving in a desired manner, have the same frequency and phase as a train of reference pulses from source 4. Comparator 3 provides a phase-error signal which is applied to delay device 5 in which the signal is stored until the error signal resulting from the next subsequent measurement is available. The delayed and undelayed signals are applied to difference circuit 6 to develop an error difference signal which is combined with a delayed feedback signal in adder 7. The latter develops a velocity error signal proportional to the sum of one-half the error difference signal added to the delayed feedback signal. In adder circuit 8, the velocity error signal is combined with the phase error signal to develop a first control potential proportional to the sum of one-half the velocity error signal and the phase error signal. The first control potential is then applied to a non-linear circuit 9 which has a linear response to signals of either polarity within a predetermined range of magnitude, and, for signals exceeding this range, has an incremental gain which continuously diminishes as the magnitude of the signal increases. The output from circuit 9 forms a second control potential which is added to the velocity error signal in circuit 10 to yield a final control potential. The latter is applied to motor 11 which drives the member 1, a device 13 being responsive to the force in transmission 12. The signal from the device 13 is delayed until the next measurement period by device 14 and is then applied as the delayed feedback signal to the circuit 7. The transducer 2 may be magnetic or photo-electric, and the force in transmission 12 may be detected by a load cell or by means responsive to the armature current of the motor.
Patent GB-547184-A (GB)
Title: Improvements in means for trimming helical abrasive wheels
IPC: B24B53/08
Filed: 1940-12-14
Abstract: 547,184. Trimming abrasive wheels. BROWN & SONS (HUDDERSFIELD), Ltd., D., and TUPLIN, W. A. Dec. 14, 1940, No. 17696. [Class 60] Apparatus for trimming the threads of a helical abrasive wheel d has means for reciprocating the diamond a or other tool, while in contact with the thread, repeatedly along a predetermined path and means for rotating the wheel d and relatively traversing the wheel and tool in the direction of the axis of the former, at a rate proportional to that of the rotation of the wheel, the reciprocatory movement of the tool being not necessarily in timed relation to the other movements. Two diamonds may act on opposite sides of the wheel and on reverse faces of the thread. Each diamond is carried by an arm b universally jointed at b<SP>3</SP> to a base g, guided by an enlarged pattern i of the thread face, and reciprocated by a cam e and spring f. If the thread face is flat the joints b<SP>3</SP> are of the hinge type and the patterns are omitted. The base g may be connected to a slide which is traversed axially of the wheel. The connections between the pattern and diamond may include pantagraph mechanism.
Patent GB-460294-A (GB)
Title: Improvements in the measurement or indication of the voltage on high tension conductors
IPC: G01R15/14
Filed: 1935-06-20
Abstract: 460,294. Transformers. BRITISH THOMSON - HOUSTON CO., Ltd., and MATHEWS, P. June 20, 1935, No. 17739. [Class 38 (ii)] [Also in Group XXXVI] A measure of the voltage on a high-tension conductor is obtained through a transformer connected to a capacitance divider, the transformer having a magnetizing admittance which increases with increasing primary voltage, and its secondary winding 3 being connected to the instrument through a reactance embodied in the transformer. To obtain the magnetizing admittance characteristic, the transformer laminations are interspersed with high-permeability laminae made of the material known under the Registered Trade Mark " Mumetal." Where the series reactance is incorporated in the transformer as by means of the shunt 4, the high-permeability laminations are confined mainly to the primary side of the transformer core thus forming composite laminations. Air gaps 5 in the shunt 4 permit adjustment for phase angle and load variation, and also variation in the capacitance coupling. Specifications 299,062, [Class 37], and 347,339 are referred to.
Patent GB-1186682-A (GB)
Title: Improvements relating to Pneumatic Fibre Feeding Arrangements for Textile Cards
Inventor: HARRISON DONALD BRITTON
IPC: D01G23/02
Filed: 1966-04-22
Abstract: 1,186,682. Conveying fibrous material to carding machines. T. M. M. (RESEARCH) Ltd. 13 April, 1967 [22 April, 1966], No. 17786/66. Heading D1N In a pneumatic feeding arrangement for conveying fibrous material to a plurality of carding machines C1-C6, each carding machine has a tapering, closed topped, chute 11 with means 20, 21 at the bottom of the chute for delivering the fibrous material in sheet form to the card, a trapezium shaped opening in one side wall of the chute being releasably connected to a supply duct 29 and a smaller trapezium shaped opening in the opposite side wall being releasably connected to an outlet duct 30. Fibrous material fed in an airstream through duct 29 has its flow cross section abruptly increased as the flow enters the upper part of chute 11 provided that the level of fibres in the chute is below the bottom of the inlet opening, the resulting reduction in fibre flow velocity being sufficient to allow fibres to be deposited in the chute. Fibres collecting in chute 11 are compacted by the action of an oscillating wall 15 which swings about pivot 16. Sealing strips 49, 50 at the lower ends of the chute walls prevent air loss. A lever arrangement 41-47 allows for the adjustment of the spacing between the wall 12 of the chute and the nip between the roller 20 and the feed plate 21. Angled strips 33, 34, 35 surround the openings and ducts 29 and 30 are secured to the chute 11 by sliding flanges on the ends of the ducts behind the strips. An insert plate may be interposed between the end of a duct and the side walls to reduce the size of the opening and thus alter the flow rate. A wall of the chute may be transparent.
Patent GB-1150542-A (GB)
Title: Radar Receiver Employing a Synthetic Coherent Reference
Inventor: WILEY CARL ATWOOD
IPC: G01S13/538
Filed: 1966-04-22
Abstract: 1,150,542. Pulse radar. NORTH AMERICAN AVIATION Inc. 22 April, 1966, No. 17845/66. Heading H4D. The receiver of a pulse radar system is provided with a phase coherent reference signal by mean responsive either to a transmitted pulse or to an early ground-return echo. In the first instance it is ensured that the phase reference signal corresponds to the state of the CW oscillator at the time of the transmitted pulse and any interim filter or variation in the CW oscillator up to the time of the received echo signal does not therefore affect this reference. In the second instance, when the receiver forms part of an AMTI radar, the Doppler-shift effects in both ground clutter return and moving target echoes due to the motion of the radar itself are overcome by storing an early ground return echo to provide a subsequent clutter reference for echo signals received during the remainder of the pulse repetition period. In one embodiment, Fig. 1, relating to the first instance mentioned above, a sampled signal source 15 co-operates with the transmitter 10 to provide reference signals to an input line 14 of the receiver 11. Terminals 20, 22 of a switch 18 couple sampled energy from source 15 to a delay line 16 for the duration of the sampled energy, in response to the application of the energy sample to the switch control terminal 19. After such duration, terminals 21, 22 are reconnected and the switch 18 returns to its normal state. The delay line 16 is a wedge-shaped block of quartz having an inclined face stepped or roughened to provide a plurality of discrete reflecting surfaces whereby the interval over which the pulsed energy echoes are received back from the delay line is substantially greater than the duration of the energy sample. The echo signals from the delay line are supplied through terminals 21, 22 to a saturating amplifier 17 and then to signal combining means 13 for use as phase-reference signals. An elaboration of Fig. 1 is described with reference to Fig. 2 (not shown), whilst an embodiment relating to the second instance mentioned above involving an AMTI radar is described with reference to Fig. 3 (not shown).
Patent GB-643030-A (GB)
Title: Engine-driven electric generating plant
Inventor: BINNEY ERIC ALTON
IPC: H02P9/00
Filed: 1947-07-07
Abstract: 643,030. Transmitting mechanical power; automatic control of power and speed; exciting dynamo-electric machines. ENGLISH ELECTRIC CO., Ltd. July 7, 1947, No. 17921. [Classes 35 and 38 (iv)] [Also in Group XXIX] An engine-driven electric generating plant supplying a varying load such as traction motors, comprises a fluid-pressure servomechanism (see Group XXIX), controlled by the engine speed, which varies the fuel supply to the engine in order to maintain the engine speed constant with varying loads up to a predetermined permissible maximum, and increases the sensitivity of an amplifying exciter supplying all or part of the main generator excitation when the load exceeds that value, so that the generator output voltage falls with further increase in load current. When the load is below the permissible maximum the amplifying exciter 2, which may be of the kind described in Specification 579,570, is excited by a control winding 2b supplied from a separately excited voltage generator 6, susceptible to variations in engine speed, and from an opposing reference winding 2a supplied from a constant voltage source 4 which two windings together do not materially affect the excitation provided to the generator 1 by the winding Ic with small changes in engine speeds. When the fuel supply valve 23a opening reaches that determined by the stop 57, further demand on the engine results in the flexible link 22 yielding so that switches 7 and 8 are closed. A feed-back winding 2c then increases the sensitivity of the exciter to changes in speed and in the excitation provided by the control winding, and an opposing load bias winding 2d energized by a fraction of the load current counteracts the feedback winding 2c. At load currents in excess of the maximum. at normal voltage the winding 1e and the self-excited winding 1a produce the lower output voltage required for constant power output with a slight decrease in speed. The strengths of the fields 2a, 2d and 1a are determined for each of a range of maximum permissible engine speeds and horsepowers by adjustment of the respective resistors 3, 9 and 10, e.g. by multi-pole contactors operated in conjunction with the engine setting control solenoids 42-44. The feed-back winding may be series connected with the winding 1e, the contacts 7 short-circuiting the feed-back winding when amplification is not required, whilst the engine speed is under the control of the fuel supply valve. The reference and control windings may be replaced by a single winding excited by the difference in voltage between the generator 6 and source 4. The self-excited winding 1a may be replaced by a separately-excited winding and a decompounding winding, or the whole of the excitation for main generator may be supplied by the amplifying exciter.
Patent GB-1141018-A (GB)
Title: Safety clamp
Inventor: RENFROE RAYMOND L
IPC: A62B1/04
Filed: 1966-04-25
Abstract: 1,141,018. Clamps. J. C. RENFROE & SONS, Inc. 25 April, 1966, No. 17992/66. Heading E2B. [Also in Division A3] A safety clamp for attaching an individual workman's safety line to a structural member, the clamp being constructed for one-hand operation comprises:- a clamp body 10; connection means 12 for attachment of the clamp to the safety line; a first jaw 20 on the body; a second member 48 mounted on the body for movement relative to the body, the second member having a jaw 50, and the jaws having gripping surfaces for engaging the structural member; handle means 54 for moving the jaw on the second member to an open position; spring means 58 biassing the jaw on the second member away from the open position; and manually movable locking means 36 engageable with the second member to retain the jaw on the second member positively in gripping engagement with the structural member and movable to allow the jaw on the second member to be moved by the handle means into the open position against the force of the spring means. In the construction shown the member 50 is pivotally connected to the body and the first jaw 20 is mounted in a recess 16 in the body 10 by means of a rod 24, a spring 28 being interposed between the jaw and the base of the recess; the locking means 36 is a bolt threaded into the body and engageable with a shoulder 56 of the jaw 48, to lock the jaw in clamping engagement with the structural member. In a modification the jaw 20 is an integral part of the body 10. The bolt 36 instead of engaging the shoulder 56 directly can engage it via a spring loaded slidable member and with this construction if desired the spring 58 can be omitted, the jaw 48 being urged towards the jaw 20 by the spring biasing the slidable member. The bolt 36 is positioned close to the handle means 54 so that it and the handle means can be gripped with one hand.
Patent GB-1302467-A (GB)
IPC: E04C2/24
Filed: 1971-05-28
Abstract: 1302467 Moulded cane-reinforced bodies D LINI and R RAMASCHI 28 May 1971 [30 May 1970] 18019/71 Heading B5A A shaped body is made from at least one layer of natural canes arranged parallel and held in place by expanded synthetic resin. The canes are stripped of leaves, preferably treated with non - inflammable and water - repellant material laid up in a shaping device preferably with each layer 1a, 1b, 1c, &c. arranged at right angles to the previous layer, and expansible synthetic resin is fed in under pressure to foam and produce a body of expanded resin in which the canes are embedded. Further canes may be placed at right angles to the layers to form a three-dimensional reinforcing structure. The resin may form a wall-like outer coating and an additional laminated layer 3 may be applied to the top of the body, e.g. a block, whilst the lower layer In may be laid on a bed 4 of inert material, e.g. gravel, glass fibre or asbestos. The expandable resin may be, e.g. polyurethane or an epoxy, urea phenolic, polystyrene, silicone, polyvinyl or acrylonitrile. The non-inflammable and water repellent material may be a chloroprene, urea formaldehyde or other aminoplast resin. The shaped bodies may be formed in a mould or a continuous process may be used by feeding the materials into one end of a rectangular section shaping device formed by upper and lower horizontal conveyer belts with vertical side walls. The canes may be cut to length before feeding or the shaped body may be cut into lengths. The method can be used to mould boats, furniture or tanks for domestic or industrial use.
Patent GB-255634-A (GB)
Title: Improvements in cooling systems for motor vehicles
IPC: F01P5/02
Filed: 1925-07-14
Abstract: 255,634. Imray, 0. Y., (International Motor Co.). July 14, 1925. Cooling radiators, deflectors for. - In cooling motor radiators by a fan arranged below and between sections of the cooling tubes. baffles are provided to direct the air in equal volumes over the sections. The fan g is carried by the flywheel h of the motor, and is provided with a scroll i. The air currents are directed by baffles l, l<1>, N over the radiator sections f.
Patent GB-649575-A (GB)
Title: Improvements relating to slicing machines
IPC: B24B3/46
Filed: 1946-06-14
Abstract: 649,575. Sharpening slicing-machine knives. BERKEL & PARNALL'S SLICING MACHINE MANUFACTURING CO., Ltd. (Maatschappij van Berkel's Patent N.V.) June 14, 1946, No. 18028. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 14, 1946] [Class 60] [Also in Group VI]. The knife-grinding apparatus for a slicing-machine is housed within a receptacle formed as an extension of the casing of the knife bracket so that the grinding apparatus and its cover can be lifted from the receptacle, turned and lowered on to the knife. The grinding elements 5, 6, are secured to a sleeve 11 which slides on a pillar 12 housed within a receptacle 4 formed at the top of the knife bracket. A cover 9 with an attached sector of knife guard 22 is screwed to the grinder. In the operative position, as shown a locating pin 16 projecting through a slot in a flange 13 on the sleeve 11 engages a screw 17 which adjusts the level of the grinder. A slotted plate 18 secured to the flange 13 allows for lateral adjustment. An external hand lever 23 mounted on a cam shaft 24 moves the grinding wheels into contact with the knife. To retract the apparatus, it is raised and rotated so that the pin 16 can pass through a second slot in the flange 13, diametrically opposite the first, and is then lowered until the cover 9 closes the receptacle 4. Specification 610,858 is referred to.