baber/WOPTO huggingface dataset:
Patent GB-773394-A (GB)
Title: Magnet arrangements for travelling wave tubes
IPC: C08G81/02
Filed: 1953-10-26
Abstract: 773,394. Magnets. STANDARD TELEPHONES & CABLES, Ltd. Oct. 26, 1953 [Oct. 31, 1952], No. 29510/53. Class 35. [Also in Group XL (a)] A magnetic focusing device for a travelling wave tube comprises a cylindrical permanent magnet 6, Fig. 1, of which the wall tapers in thickness from a maximum at the centre to minima at its ends, surrounding a magnetic sleeve 7 which is saturated by the field of magnet 6, so that the magnetic field is uniform along the beam path and falls abruptly at each end. Cylinder 7 is saturated at or below the minimum field strength used. The focusing device may be designed for rectilinear electron flow or for arrangements in which the gun converges the beam down to a small diameter before the magnetic field is applied, such as in Brillouin type flow. The slight increase of magnetic field at the centre is eliminated by grinding away a small portion of the inner wall of the magnet at the centre thereof. Cylindrical shell 7 of saturable magnetic material makes the field still more uniform along the length of the delay line and also makes the field accurately axial. In a modification, the permanent magnet may be of tapered outer diameter, Fig. 4 (not shown). Tube envelope 2 is of ceramic material or of non-magnetic metal, and the gun electrode terminals are at the left-hand end while the input and output coupling devices, which may be coaxial lines as shown, or waveguides, are taken to terminals at the right-hand end. The helix 9 may be supported by a ceramic tube, or preferably by insulating rods 14, carried by magnetic shields 10, 11 and matching transformers 12, 13. The helix may be bonded to its support rods, and the helix assembly may be coated over the half nearer the input, or any other desired portion, with lossy material such as colloidal graphite. The helix may be replaced by a disc-loaded waveguide. Specifications 706,958, 740,852, [both in Group XL (a)], and 773,393, [Group XL (b)], are referred to.
Patent GB-1118926-A (GB)
Title: Improvements relating to electrical control circuits
Inventor: CLISH FRANK
IPC: G05B19/04
Filed: 1964-07-18
Abstract: 1,118,926. Position control. BURGESS PRODUCTS CO. Ltd. 19 July, 1965 [18 July, 1964], No. 29713/64. Heading G4H. A multi-position switch is set in accordance with the desired position of a movable member, each contact of the switch is connected to a corresponding junction between a pair of microswitches in a set connected in series, one end microswitch is connected to means for moving the member in one direction and the other end microswitch is connected to means for moving the member in the other direction. the arrangement being such that a circuit is completed to drive the member towards the desired position until an actuator e.g. a cam, coupled to the member opens the pair of microswitches on each side of the selected junction. Reference has been directed by the Comptroller to Specification 974,482.
Patent GB-1471952-A (GB)
Title: Fire extinguishing system and valve for use therewith
IPC: F16K31/40
Filed: 1974-04-16
Abstract: 1471952 Valves PYROTECTOR Inc 16 April 1974 [7 May 1973] 29717/76 Divided out of 1471951 Heading F2V The description is similar to that in Specification 1,471,951, but the claims relate to the alternative manual and solenoid operation of the pilot valve.
Patent GB-621811-A (GB)
Title: Improvements in rear lights for cycles or the like
IPC: B60Q1/26
Filed: 1946-10-05
Abstract: 621,811. Lamp-holders. SIMS, S. Oct. 5, 1946, No. 20730. [Class 38 (i)] [Also in Group XI] In a bicycle rear-light (see Group XI), a holder for a bulb K having a screw plug K<SP>1</SP> consists of a helical wire coil L, the ends of which are passed through two holes in an insulating disc G and bent upwardly round the edges of the disc to form two spring fingers L<SP>1</SP> which detachably secure the holder inside the metallic body B of the lamp and form a contact therewith. The supply wire F passes through a central hole in the disc G and through a metal washer H to which it maybe soldered.
Patent GB-1278253-A (GB)
Title: Fuel control system for gas turbine engines
Inventor: IFIELD RICHARD JOSEPH
IPC: F02C9/00
Filed: 1968-06-24
Abstract: 1278253 Gas turbine engine fuel systems JOSEPH LUCAS (INDUSTRIES) Ltd 16 June 1969 [24 June 1968] 29923/68 Heading F1G A gas turbine engine fuel system comprises a pump for supplying fuel to the engine burners, a pressure control device including first and second valves in series between the pump inlet and outlet, each valve being actuable in accordance with an air-pressure derived from the engine compressor to regulate the fuel pressure by spilling fuel, and a governor driven at a speed proportional to the engine speed and acting to modify the air-pressure applied to the pressure control device in accordance with the desired and actual engine speeds. A fixed displacement pump 1 driven at a speed proportional to the engine speed supplies fuel to the engine burners at a pressure which is regulated by by-pass valves 3, 4 connected in series between the outlet and inlet of the pump. Valve 3 is controlled by diaphragms 12, 13 of equal area and coupled together so as to move in unison, whereby the opening of the valve is independent of fuel pressure. A smaller diaphragm 14 is connected to the diaphragms 12, 13 through a spring 15. The upper side of diaphragm 14 and the lower side of diaphragm 13 are subjected to a pressure P 1  derived from the inlet of the engine compressor, while the lower side of diaphragm 14 and the upper side of diaphragm 12 are subjected to a pressure derived from the compressor outlet pressure P 2  but modified by a device 2 comprising a blade which is movable between a pair of nozzles to deflect a variable proportion of the air-flow between the nozzles, the blade being movable under the opposed influences of a throttle link 9 and an enginedriven governor weight 5. The valve 4, controlled by a diaphragm 16 acted on by the compressor outlet pressure P 2  in opposition to the fuel pressure, determines the minimum value of the fuel pressure in accordance with the pressure P 2  During steady running, the actual fuel pressure is higher than this minimum value by an amount determined by the valve 3, the effect being to maintain the engine speed at the value demanded by the throttle link 9. During acceleration, the blade of the device 2 is withdrawn completely from the nozzles so that the pressure in the chamber between the diaphragms 12, 14 is substantially equal to P 2 , whereby the diaphragm 14 is separated from the diaphragm 12 against the action of the spring 15 and urged against a stop. The position of the valve 3 is then determined by the pressures P 1  and P 2 , with a position feedback signal applied by the spring 15.
Patent GB-771476-A (GB)
Title: Improvements in electric lamps and bases therefor
IPC: H01J5/56
Filed: 1953-10-29
Abstract: 771,476. Lamp caps. BRITISH THOMSONHOUSTON CO., Ltd. Oct. 29, 1953 [Oct. 30, 1952], No. 29951/53. Class 38 (1). [Also in Group XL (a)] A base for an electric lamp, particularly a fluorescent discharge lamp, having a doubleended tubular envelope 1 of substantially circular configuration having terminals extending from its ends, comprises a sheet metal sleeve 2 curved to conform with the envelope and made up of two longitudinal sheet aluminium sections 3, 4 having overlapping edges, one pair 14, 16 interlocking at their end portions 20, 17 and 22, 19 and at their centre portions 21, 18, Fig. 3, and the other pair 13, 31 interlocking only at their centre portions 23, Fig. 2, the section 3 having an opening 32 in its central portion facing inwardly of the curved base which also comprises a body 12 of insulating material having spaced contacts 7-10 for connection with the envelope terminals, and an external source and fixed to the section 3 by tongues. The sections 3 and 4 generally interlock by a flexible tab and slot connection. The body 12 has notches 42, 43, 44 to receive the tabs 28, 29, 30, Fig. 3, passing through the holes 45, 46, 47. The opening 32 has a rolledover edge 38 engaging the sides 39 of a flat portion in the convex surface 40 of the body 12. Specification 635,545, [Group XL (a)], is referred to.
Patent GB-528307-A (GB)
Title: Improved sheet feeding mechanism for addressing and other printing machines
IPC: B41L47/24
Filed: 1939-05-02
Abstract: 528,307. Feeding webs. ADDRESSOGRAPHMULTIGRAPH CORPORATION. May 2, 1939, No. 30152. Convention date, May 13, 1938. Divided out of 528,273. Drawings to Specification. [Classes 100 (i) and 100 (ii)] An apparatus for feeding a sheet in steps to a printing apparatus, and particularly for feeding a listing strip in an addressing machine, comprises a clamp to engage the sheet, a strip, provided with a series of abutments, removably attached to the clamps so that strips with differently spaced abutments may be used, and means acting on the successive abutments to feed the strip and thereby the clamp and sheet. The construction described is identical with that described in Specification 528,273. Specification 470,291 also is referred to.
Patent GB-1269668-A (GB)
Title: A POLY(alpha-AMINO ACID) DOPE COMPOSITION
IPC: C08J3/09
Filed: 1969-06-13
Abstract: 1,269,668. Coated products. KYOWA HAKKO KOGYO CO. Ltd. 13 June, 1969 [9 Aug., 1968], No. 30160/69. Heading B2E. [Also in Division C3] In Ex. 5 1.3 mm. thick non-woven nylon cloth coated with a reaction product of trimethylol propane and lysine diisocyanate as an adhesive is treated with a filtered solution of 8g. of a copolymer of equal weights of L- alanine and γ-methyl-L-glutamate in 100 ml. o-chlorophenol. After immersion in acetone to coagulate the copolymer and drying the material was similar in appearance and feel to leather. In Ex. 2, a solution of poly-γ-methyl- D-glutamate in o-chlorophenol is knife-coated onto a glass plate, followed by dipping in water-acetone mixed solvent.
Patent GB-1083632-A (GB)
Title: Improvements in or relating to electrically insulating paper
Inventor: KOJIMA KEIJI
IPC: H01B3/48
Filed: 1964-08-04
Abstract: Electrically insulating paper is made by sticking together with an adhesive several intermediates.  The intermediates are made under conditions for making a paper of a thickness from 0.025 mm to 0.07 mm, and are dried to a water content of 100% or less, based on the fibre, before being stuck together.  The adhesive may be applied over the whole adhesion surface, or in dots or lines only.  The intermediates may be of different kinds. Power-transmission cables may be insulated by lapping with the insulating paper of the invention.
Patent GB-425776-A (GB)
Title: Improvements in or relating to direct current electric motor control systems
IPC: H02P7/292
Filed: 1933-11-02
Abstract: 425,776. Control of D.C. motors. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and GARRARD, C. C., c/o General Electric Co., Witton, Birmingham. Nov. 2, 1933, No. 30484. [Class 38 (iii)] Varying E.M.F.; regenerative braking.- Traction motors 3, 4 are supplied during starting with variable voltage from an arc rectifier 10 which is supplied with alternating-current from an arc inverter 16 connected to a direct current supply 17, the motors being connected to the supply 17 without conversion thereof during normal running by the closure of switches 19, 20. The motors may be changed from series to parallel connection by switches 5-7, the supply from the rectifier 10 being restarted when the parallel connections are first made and increased in voltage, and the motors being finally reconnected to the supply 17. The voltage regulation may be effected by tap changing gear 15, or by varying the time of ignition of the arcs of the converters. The motors may be compound-wound and regeneratively braked by controlling the motor fields, or the tappings on the transformer connected with the converter 16. Current limit relays may govern the rate of voltage change. The converters may be as shown in Specifications 406,999 ; 409,974 and 412,935, [both in Group XL].
Patent GB-1584564-A (GB)
Title: Machines for producing coaxial pairs
IPC: H01B13/20
Filed: 1977-07-20
Abstract: The device comprises two half-cavities each defined by a stack of three small plates (inserts) (21-23), one (23) of which defines the radius and the thickness of the disk to be injection moulded. This small plate (insert) (23) is identical in all the half-moulds, as is one (21) of the lateral small plates (inserts), the other (22) being machined individually for the groove in which the stack occurs, of which this groove forms part, so that this stack exactly fills the groove which is assigned to it. <IMAGE>
Patent GB-617671-A (GB)
Title: Improvements relating to fish-dressing machines
IPC: A22C25/08
Filed: 1946-10-14
Abstract: 617,671. Fish-dressing machines. FISADCO, Ltd., and FARRER, E. R. B. Oct. 14, 1946, No. 30575. [Class 28 (ii)] In a fish-dressing machine in which the tail of a fish is gripped by moving clamps and thereby pulled away from a feed table 2 and is then carried away and presented to knives or tools to split, fillet, &c., the fish, the tail fin passes between stationary guides 21, 22 terminating in a narrow slot between needle like guide extensions 24, 25 which flatten and straighten the tail fin before it enters the clamp. The guides are especially suitable for large fish, e.g. cod. The clamp is carried on a cylindrical rod carried by a clockwise rotated table adjacent to an anticlockwise rotated feed table 2. The clamp jaws pass one above and one below the guides 24, 25. The clamp jaw 9 is normally held against the other jaw by springs 12 and is timed to open to receive a tail fin by a fixed cam 14 on a stationary arm 15. After gripping the tail fin the clamp is rotated through 90 degrees by cam rails 16, 17 which guide rollers 18 and 19 attached by arms to the clamp pivot 17. The rails 16, 17 are interrupted as shown to allow entry of the roller 19. This 90 degrees rotation pulls the fish tail from a radial position to a tangential position so that the fish is presented longitudinal to the tools.
Patent GB-1511168-A (GB)
Title: Robot apparatus
IPC: B25J9/22
Filed: 1975-07-22
Abstract: 1511168 Program control KELLER & KNAPPICH AUGSBURG ZWEIGNIEDERLASSUNG DER INDUSTRIE-WERKE KARLSRUHE AUGSBURG AG 22 July 1975 [22 July 1974] 30578/75 Heading G3N A programmable article-manipulator, in particular as described in referred-to Specification 1409463 (see Division B8), has an articulated manually-displaceable support structure arranged in parallel with the motor-driven hand-arm units of the manipulator proper. Each section of the support structure is pivotable about the same axis as the corresponding section of the hand-arm unit, and rotation of a support structure section effects operation of an associated switch which drives the corresponding section of the hand-arm unit to follow the support structure section. The extent of such driven rotations are recorded to provide a program by which these movements can be repeated automatically. Fig. 2 shows the hand part of the apparatus carrying a path-follower 39. A motor in a support member (1) of the complete apparatus Fig. 1 (not shown), is connected by belt and toothed gearing to effect rotation of the arm sections about three axes (I, II, III), of the hand about a wrist axis IV, and of the hand sections about axes V and VI. A handle 9 can rotate the support structure elements 10, 17, 21, 24 &c. about their respective axes. Considering only the rotation about axis VI, the manual rotation of 10 causes rotation of a rod 28-29 thereby making a switch contact 30 which (a) governs the drive of shaft 79 and (b) records the extent of such drive in a program device. Similar arrangements apply for the other five. rotational axes. The end section 29 of rod 28-29 may be a tube which is torsionally stressed when section 28 is rotated, the 'switch' 30 being a strain gauge.  Fig. 3 (not shown), depicts the program-control arrangements by which digitally encoded program signals are converted into analogue movementcommanding signals. The control provides for program recording at a 'neutral' speed for subsequent automatic control at constant speed. In another mode of operation, the automatic control follows a variable-speed program reflecting the speeds originally effected manually. The first mode is said to be suitable for a seam welding application and the second for paint spraying.
Patent GB-159965-A (GB)
Title: Improvements relating to heat conserving means
IPC: A47J36/36
Filed: 1919-12-06
Abstract: 159,965. Nitro-Fixation Syndicate, Ltd., and Jenkins, H. C. Dec. 6, 1919. Plate apparatus.-Heat radiation from a cylinder or annular channel &c. is prevented by causing a fluid to pass through a spiral passage or a plurality of fluids through a plurality of spiral passages arranged concentrically with the cylinder &c. Specifications 9815/94 and 24404/01 are referred to.
Patent GB-1311648-A (GB)
Title: Fabric folding or laying machine
IPC: A41H43/00
Filed: 1971-06-30
Abstract: 1311648 Laying fabrics G STUMPF 30 June 1971 [5 Aug 1970] 30726/71 Heading D1S In a fabric laying machine, lateral deviation of the fabric edges is detected by photoelectric devices 7 which scan the fabric edges and, if necessary, actuate a gear motor 12 to shift a rod 18 carrying a fabric roll 4 to automatically re-align the edges.  A fabric laying carriage 1 is driven by a gear motor 2 to reciprocate over a table 3 and layer fabric 5 from a roll 4 in a stack 10, a fabric feed roller 8 and a cutter 9 being provided. The devices 7 are located between guide rollers 6, 6'. In one embodiment, Fig. 2, the rod 18 is carried in fork-shaped recesses, coated with low-friction material, in carriers 15, 16. A collar 17 on the rod 18 engages in a non- rotatable nut 20 which is movable along a threaded spindle 19 by the motor 12 in accordance with signals sent from the devices 7 so as to shift the rod 18. In another embodiment, Fig. 3, the driven shaft of the motor 12 has an internal thread engaged by a threaded spindle 22 which is coupled to the rod 18 by a collet 23 so that the roll 4 may rotate freely but is movable axially for edge-alignment. Rotation of the spindle 22 is prevented by a pin 24 engaging in a groove 25 in the carrier 15.  In a further embodiment, Fig. 4, the rod 18 is carried in recesses 31 in carriers 26, 27 mounted on pivots 28 and connected by a rod 32. A spindle 30, connected to the carrier 26, is movable along its axis by the motor 12 to shift the shaft 18, rotation of the spindle 30 being prevented by engagement of a pin 33 in a slot in a member 34 on the carrier 26,
Patent GB-466954-A (GB)
Title: Improvements in or relating to thermionic valve circuits
IPC: H03G7/02
Filed: 1935-11-06
Abstract: 466,954. Valve amplifying circuits. BULL, C. S. Nov. 6, 1935, No. 30730. [Class 40 (v)] In a hexode or like valve, gain control is effected by applying the signal in opposite phase to the two control grids, and varying the difference between the bias potentials on the two grids, either manually or by the incoming signals. The Figure shows a hexode valve in which the control grids 4, 6 are coupled by condensers to the input transformer 11, and the cathode 2 is connected to the centre tap which is earthed. Negative potential from terminal 19 normally maintains the outer grid biassed to cut-off, the inner grid being at a cathode potential. For the purpose of deriving voltages for automatic gain control, the anode is coupled to the diodes 24, 28, the voltages developed across the diode load resistances 25, 29, being applied to the control grids in opposite senses. These voltages are preferably proportional to the grid bases of the two control grids. It is shown that under these conditions the valve characteristic is approximately parabolic, which is desirable for the prevention of distortion. In a modification, Fig. 3 (not shown), the outer grid is biassed to cut-off by a cathode resistance and the inner screen current, and the potential of the inner grid is controlled by a single diode. When a signal is received negative bias is imposed on the inner grid, causing the total cathode emission to diminish and therefore the negative bias on the other grid to be diminished.
Patent GB-340638-A (GB)
Title: Improvements in or relating to lubricating systems
IPC: F16N7/38
Filed: 1929-10-10
Abstract: 340,638. Lubricating. WHITE, A. E., 5, Quality Court, Chancery Lane, London.- (Bowen Products Corporation, Auburn, New York, U.S.A.). Oct. 10, 1929, No. 30763. [Class 12 (iii).] Controlling flow of lubricant; filtering lubricant.- Lubricant is supplied to the bear ngs of a motor-vehicle chassis or other machine from a common pressure source through metering units 28, Fig. 3, containing plugs 33 of porous ceramic material through which the lubricant passes. The lower end of each plug 33 is pressed against a gasket 31 provided with a central discharge hole 32. The several units are identical except as regards the size of the holes 32, which determine the distribution of the lubricant. As shown, a branch pipe 37 leading from the main supply pipe is connected to each unit by a coupling nut 38 which also serves to press a disc 34 against the plug 33. The disc is adapted to engage a shoulder 29 in the body 28 so as to limit the pressure which can be applied to the plug. The lower surface of the disc 34 is formed with grooves 35 radiating from the central opening which receives the pipe 37, so as to distribute the lubricant over the upper surface of the plug. The plug 33 acts also as a filter, the sediment collecting in the space around the plug. In a modification, the ceramic plug is held against a grooved shoulder in the body by an apertured plug inserted in the lower end of the body. Single-acting piston pumps ; diaphragm pumps ; valves, arrangement of ; strainers.-The lubricant is supplied by a pump comprising a cylinder 7, Fig. 1, mounted in a reservoir 1 so as to be capable of slight axial movement. An inturned flange 8 at the lower end of the cylinder is adapted to rest on a gasket 9 mounted on an outlet fitting 10 containing a filter disc 16 of porous ceramic material pressed against a gasket 14 by a spring 15. The piston 17 is raised by depressing a lever 22 engaging under a head 26 on the piston rod 6, and is depressed by springs 21. At the commencement of the upward movement, the cylinder moves up slightly with the piston, leaving a small opening between the flange 8 and gasket 9 for entry of lubricant to the cylinder. When the piston is depressed, the cylinder moves down to close the opening and lubricant is discharged through the filter 16 into the discharge pipe 12. In a modification, a supply pump is actuated automatically by the variations in vacuum in the induction manifold of an internal combustion engine. Lubricant flows from a reservoir 39, Fig. 54, through a ceramic filter 46 clamped over openings 45a in a dividing plate 45. A diaphragm 52 is clamped at the edge between the plate 45 and a bottom plate 53, the space between the diaphragm and the plate 53 being connected to the induction manifold by a pipe 57<1>. The outlet passage from the space above the diaphragm to the discharge pipe 74 contains a spring-pressed check valve 59 and an adjustable needle valve 61.
Patent GB-244748-A (GB)
Title: Improvements in gastroscopes
IPC: A61B1/273
Filed: 1925-12-05
Abstract: 244,748. Wolf Ges., G. Dec. 19, 1924, [Convention date]. Optical instruments; appliances for illuminating cavities. - A gastroscope comprises a tube a having an inclined elbow in which is housed a lamp b. The elbow is provided with apertures c<1>, c<2> for illuminating the cavity and with a window d for observation during introduction of the gastroscope by means of a direct - vision optical tube f. The tube f comprises objective lenses g<1>, g<2> and a reversing lens h. When the gastroscope has been introduced the tube f is replaced by a tube for lateral observation through a window e in the tube a.