baber/WOPTO huggingface dataset:
Patent GB-892828-A (GB)
Title: Electric control circuits
Inventor: PEASE WILLIAM EDWARD
IPC: G05B1/02
Filed: 1959-03-12
Abstract: 892,828. Automatic voltage-control systems. STANDARD TELEPHONES & CABLES Ltd. March 11, 1960 [March 12, 1959], No. 8539/59. Class 38 (4). [Also in Group XXXIX] A pair of auto-self-exciting transductors are so biased that a deviation in their D.C. control current, above or below a given value causes one transductor or the other to conduct and selectively energize one of a pair of relays. The relays may operate a voltage regulator. The transductors 2, 3 energize relays L, H over rectifiers 4, 5 from an A.C. source 1. The two bias windings 12, 13 and the two control windings 14, 15 are all connected in series together with a potentiometer 7 and a variable resistor 8 across a source of D.C. control voltage 16, 17. The bias windings 12, 13 and a selected part of the potentiometer 7 are shunted by a Zener diode 6 so that there is a constant voltage drop across the windings and hence a substantially constant bias current. The control and bias windings oppose and are so proportioned that when the control voltage is at a given value, both transductors are biased to the lower knee of their magnetization curve and pass minimum current. In transductor 2 the bias winding is tending to saturate the core so that a drop in control current causes the transductor to conduct; whilst in transductor 3, the control winding is tending to saturate the core so that a rise in control current causes the transductor to conduct.
Patent GB-897534-A (GB)
Title: Improvements in or relating to nuclear reactors
Inventor: LEMESLE GEORGES
IPC: G21C5/04
Filed: 1959-03-12
Abstract: 897,534. Moderator structures. COMMISSARIAT A L'ENERGIE ATOMIQUE. March 12, 1959 [March 15, 1958], No. 8568/59. Class 39(4). Moderator blocks touch over parts of their adjacent surfaces and are separated elsewhere by a washer 14 or 32 surrounding channels through the blocks, the washer having two parallel plane faces in contact with the blocks and having its axis of minimum Wigner growth perpendicular to these faces. The area over which adjacent blocks touch may be inside the washer, the blocks having minimum Wigner growth parallel to the said faces but perpendicular to that of adjacent blocks (Fig. 1); alternatively the area over which blocks touch may be outside the washer and one block may have minimum Wigner growth parallel to that of the washer (Fig. 4). These two constructions may alternate in a single column of blocks. The blocks have keys and keyways on their end faces. The arrangement is said to reduce leakage of coolant.
Patent GB-847836-A (GB)
Title: Improvements in chain guards
IPC: B62J13/04
Filed: 1957-03-15
Abstract: 847,836. Chain guards for cycles. WUYTS, J. L. G. March 15, 1957 [March 16, 1956], No. 8589/57. Class 136(1). A chain guard casing of elastic flexible material is formed in two separate parts, 1 and 2, detachably interconnected by upstanding circumferential rims, 3 and 4, engaging together by snap-on-action. The part 2 forms the inner wall of the casing and the part 1 the outer wall. The rims 3 and 4 have respectively an internal groove 6 and an external rib 5, as in Fig. 3, which may be a dovetailed fit. The thick rims provide support for the walls of their respective parts and are reinforced by a flange 7 on the part 2. Similar rims 3a and 4a extend around a central hole and the parts are split at 14a to admit the fear fork. A raised area 11 inside the part 2 contacts the part 1 and is connected to it by bolts 13 which pass through to attach, a strap 20 on to the fork 22. A thickened area 9 on the outside of the part 2 provides a second attachment point for the frame. A cap 23 closes the open rear end of the two parts. Alternatively the rear end of part 2 may be doubled over forward to meet the truncated end of the part 1 and be slit along both back and front portions to permit removal from the hub. A detachable metal cover may be provided over the chain wheel.
Patent GB-1181076-A (GB)
Title: Improvements in or relating to Thyristor Switching Circuits
Inventor: HARRIS WILLIAM B
IPC: H03K17/72
Filed: 1967-02-23
Abstract: 1,181,076. Thyristor switching circuits. WESTERN ELECTRIC CO. Inc. 23 Feb., 1967 [25 March, 1966], No. 8612/67. Heading H3T. [Also in Division H2] In a thyristor switching circuit having a series resonant turn off circuit L.C. connected across the anode and cathode terminals of the thyristor, a diode D f  having a reverse recovery time less than that of the central junction of the thyristor is connected between the gate and anode electrodes of the thyristor and a second diode D s  having a reverse recovery time greater than that of the central junction of the thyristor is connected between the cathode and gate electrodes of the thyristor so as to reduce the inherent turn-off time of the thyristor and to enhance its dynamic breakdown capability or rate effect capability. After the thyristor has been triggered into conduction by a pulse applied to 1, the reverse ringing current set up by the L.C. circuit causes the charge existing in the outer junctions of the thyristor to be reduced to zero and then all of the reverse ringing current is passed by the diodes D s  and Df. The existing charge in the middle junction which was forward biased begins to recover by recombination and since the reverse recovery time of the diode D f  is less than that of the middle junction a forward current is now applied to the thyristor to reverse bias the middle junction. The diode D s  which has a longer recovery time than the middle junction prevents the thyristor from being falsely triggered. Several of these thyristor circuits can be connected in series across a single L.C. circuit (Fig. 4, not shown), and the diode D f  is then replaced by a fast recovery time Zener diode (Z f ) so that on triggering the first or more thyristor of the series connection the rest are fired. A fast recovery Zener diode may be in the form of a fast recovery diode (53, Fig. 5, not shown), connected in parallel with a parallel connected pair of diode varistors (52) connected in series with, e.g. three, serially connected Zener diodes (51). The thyristors may be constructed to embody the shorted emitter principle described in the American Journal of Applied Physics, November, 1959, pages 1819- 1824, in which case the resistors 3 may be omitted.
Patent GB-630801-A (GB)
Title: Improvements in and relating to reciprocating saws
IPC: B27B19/00
Filed: 1947-03-31
Abstract: 630,801. Reciprocating saws. DEHN, S. G. (Orthopedic Frame Co.). March 31, 1947, No. 8676. [Class 145(ii)]  In a reciprocating saw for cutting surgical casts, bones, wood, plastic or metal, an elongated casing 4 constituting a handle and a housing for a rotary shaft 7 carries a cutter head 11 at one end for supporting said shaft, and a cutter shaft 26 operatively connected to said rotary shaft to be oscillated by it, which cutter shaft is fitted with a toothed cutter 30 at right angles to the cutter shaft 26 and having its teeth disposed in an arcuate path about the said cutter.  shaft. In the arrangement shown the shaft 7, preferably driven by an electric motor, is provided with a crank or eccentric pin 8 and a balancing arm 10, the pin having an anti-friction roller 9 mounted thereon. On rotation of the shaft 7 the roller 9 slidably moves in a slot 29 in the arm 27 attached by the pin 28 to the cutter shaft 26, thus oscillating the shaft 26 and circular cutter 30 to give the latter a stroke at its circumference of the order of one-eighth of an inch. The saw is said not to cut or injure yielding materials such as fabric or the skin.
Patent GB-1492011-A (GB)
Title: Spacer and noise suppressor cushions for lift truck mast units
IPC: B66B7/02
Filed: 1976-03-04
Abstract: 1492011 Lift truck masts TOWMOTOR CORP 4 March 1976 [18 April 1975] 08681/76 Headings B8L and B8H A lift truck mast including a movable section slidable longitudinally within a fixed section, utilizes a plurality of spacer and noise suppressor cushions 60 mounted between the two sections. Each cushion 60 comprises an elastomeric body having a small diameter portion 58 for reception in a bore 54 in either the fixed or movable section, and a large diameter portion 72 housed in the space between flanges 50, 52 of the fixed and movable sections, the annulus formed by the large diameter overlapping the small diameter being undercut at 68 bearing a lip 70 engaging the flange 50, thereby increasing the resilience of the cushion. The outer periphery of the large diameter portion 72 is chamferred at 74. The movable mast section comprises a pair of interconnected I-section beams and the fixed section comprises a pair of interconnected C-shaped channels, the flanges of the I-beams sliding adjacent and within the flanges of the channels, and the cushions 60 being mounted in the flanges of the fixed and/or movable beams. The said flanges, extending transversely of the mast, present the cushions 60 for use during forward and backward tilting of the mast.
Patent GB-1454138-A (GB)
Title: Method of controlling open-end spinning machines and an open-  end spinning machine itself
IPC: D01H4/44
Filed: 1974-02-27
Abstract: 1454138 Controlling open end spinners VYZKUMNY USTAV BAVLNARSKY 27 Feb 1974 [9 April 1973] 8758/74 Heading D1D In an open end spinning machine comprising spinning units each provided with a sensor for detecting an abnormal operating condition, switching-off means for temporarily stopping operating elements of the unit, and with an executing element for removal of the abnormal condition, when a sensor detects an abnormal condition it actuates the switching-off means and simultaneously connects an AND circuit to an abnormal condition removal programming system common to the spinning units, the associated executing element and switching off means being thereby connected to a condition removal programme repeatedly emitted by the system. The programme may be emitted at repeated time intervals. As shown, Fig. 2, an open end spinner comprises a common normal operation programming system 1 and a common, abnormal condition removal programming system 2. Each spinning unit comprises clutches 91, 92 for a fibre feed roller and a yarn withdrawal roller, forming switching-off means and a clutch 93, enabling a yarn winding bobbin to be reversed to return yarn to the spinning chamber for spinning in, and forming the executing element. Each unit also comprises a sensor 71 for detecting yarn breakages. In normal operation sensor 71 is in position one, and system 1 issues a signal via line 11 to close clutch 91, a signal via line 12 to close clutch 92, and a signal via line 13 releasing clutch 93. When sensor 71 senses yarn breakage it assumes position two, to operate relay 51 to disconnect clutches 91 and 92, and simultaneously AND circuit or relay 51 is connected via contact 511 to line 20 of system 2. When the repeated programme of system 2 emits a starting signal O relay 61 is operated and clutches 91, 92, 93 are controlled by signals from system 2 to effect yarn piecing- up and to start spinning. The removal of abnormal conditions may be accomplished simultaneously on a plurality of spinning units. The removal of different abnormal conditions may be accomplished according to different programmes.
Patent GB-763101-A (GB)
Title: Improvements in or relating to twin screw marine propulsion units
Inventor: MURRAY GEORGE HAMILTON
IPC: B63H23/00
Filed: 1954-03-25
Abstract: 763,101. Marine power plant. NAPIER & SON, Ltd., D. March 16, 1955 [March 25, 1954], No. 8803/54. Class 114. [Also in Groups XXIV and XXVII] In a marine propulsion unit in which two prime movers 1, 2 each drive a screw propeller 3, 4 through friction clutches 5, 6 and 7, 8 respectively, the clutches being hydraulically operated by pressure fluid from pumps 9, 10 each driven by its associated prime mover, one of these is started by an auxiliary motor &c. while the second is started indirectly from the first by connecting the pressure fluid supply line for its clutch to that of the other clutch so that when a cut-off valve 35 in the connecting line 36 is opened the clutch of the stationary engine connects its propeller to it and the torque due to the ship's motion rotates the second prime mover in a direction to cause it to start. The actuation of each clutch is controlled by a shuttle type valve, e.g. the valve 11 normally maintained closed by opposed springs 29, 30 acting on an intermediate flange 33 secured to the valve 11 the valve being moved to " ahead " or " astern " positions by pressure fluid applied to one or other of its ends when a pilot valve 15 is manually actuated through a cam 17.
Patent GB-312739-A (GB)
Title: Improvements in devices for preventing unauthorised use of motor vehicles
IPC: B60R25/042
Filed: 1928-03-23
Abstract: 312,739. Causer, J. March 23, 1928. Preventing unauthorized starting of engines. - Unauthorized use of motor vehicles is prevented by providing an additional throttle valve, arranged between the carburettor and the engine cylinder and adapted to be locked in its closed position. The additional valve a is mounted on a spindle b carried preferably by a separate casting c fitted to the induction pipe. The casting is formed integrally with a lock d, the bolt e of which is adapted to engage notches f in the end of the spindle b in either the closed or fully open position. The valve is rotated by the head g which, in a modification, is mounted on the dashboard and connected to the valve through a rigid or flexible shaft, a notched collar on which can be held by the lock, also mounted on the dashboard. In a further modification, the rotating barrel of the lock serves also as the means for actuating the valve. Reference has been directed by the Comptroller to Specifications 150,869, 155,387, 157,021, 272,838, 282,077 and 290,308.
Patent GB-346137-A (GB)
Title: Improvements in electromagnetic relays
IPC: H01H50/56
Filed: 1930-03-20
Abstract: 346,137. Electromagnetic relays. ERICSSON TELEPHONES, Ltd., 67, Kingsway, London, and ROGERS, A. G., 103, High Road, Beeston, Nottinghamshire. March 20, 1930, No. 8886. [Class 38 (v).] Contacts.-An electromagnetic relay has a unitary contact-member comprising a plurality of contact limbs which protrude independently throughout their length from the same fixing or clamping point. Fixed contactsprings 4, 11 are clamped by screws 2 to the heel-piece 1. Each of the springs has two limbs 16, 17, Fig. 1, and a contact at the end of each limb. Mounted between the springs 4, 11 is a movable spring 5 having a single limb and two contact points on each side to co-operate with the pairs of contacts on the springs 4, 11. Buffers 6, consisting of strips of copper or bronze stiffened by ribs 22, have lugs for supporting, separately, the limbs of the springs 4, 11 thus allowing of independent adjustment. The spring 5 is operated by a member 10 connected to an armature 8 which is pivoted at 9.
Patent GB-612332-A (GB)
Title: Improvements in milking machines
IPC: A01J5/04
Filed: 1946-03-22
Abstract: 612,332. Cow-milking appliances. AKTIEBOLAGET SEPARATOR. March 22, 1946, No. 8892. Convention date, April 14, 1945. [Class 84] [Also in Group XVII] The cover 2 of a cow-milking pail 1 carries a pulsator 5 held by a screw 4 on the pail handle 3, and a connector 12 with passages 6, 10 &c. so that the pulsator 5 may be moved to another pail without disconnecting the milk or suction hoses 9, 8 from their respective nipples 13, 7. The milk inlet can be turned off at 11.
Patent GB-1379668-A (GB)
Title: Angular rate co-ordinate transformer
IPC: G06G7/22
Filed: 1972-02-26
Abstract: 1379668 Transforming co-ordinates NORTHROP CORP 26 Feb 1972 8942/72 Heading G4G  An apparatus 10 for transforming rates of change of Euler angles #, #, # from axes x, y, z of a body rotating with respect to a reference frame X, Y, Z, to rates of change in the reference frame comprises a first resolver 11 receiving two inputs # y , # z  representing rotations about the y and z axes, the first resolver being continuously set to produce two outputs, one of which is oriented with respect to the reference frame and the other of which is an intermediate component; second and third resolvers 12, 13 each receiving as one input an output of another resolver and as its other input a signal from a respective summer 16 or 17 connected in a feedback path from one of its own outputs; one of said summers 16 summing the respective feedback signal and the signal # x , i.e. the rotation about the third body axis, and the other summer 17 being arranged to sum the respective feedback signal and the intermediate signal from the first resolver 11. The rates of change of the Euler angles can be integrated at 18 to provide signals representing the actual angles #, #, #.
Patent GB-200793-A (GB)
Title: Improvements in vaporizers for internal combustion engines
IPC: F02M1/00
Filed: 1923-03-29
Abstract: 200,793. Akt.-Ges. f³r Patentverwertung. July 17, 1922, [Convention date]. Addition to 198,992. No Patent granted (Sealing fee not paid). Thermally - actuated vulves; stops, adjustable. - Manually-operated means are provided for operating the valve described in the parent Specification for admitting Ught or heavy fuel mixture to the vaporizer, and controlling the heating of the heavy fuel mixture by varying the point of admission to an exhaust heated passage. As shown in Fig. 1, the valve 1 is operated by a handactuated arm 15 which is looked by a stop 21 until the temperature of the exhaust gases is sufficiently high to cause the differential expansion of a rod 3 and tube 2 which operates a lever 7 and depresses a nut 10 engaging a threaded sleeve 11 carrying the stop. The arm 15 is operated by a rod 16, which may be interconnected with the throttle valve, through an interposed spring. In a modification, the valve is operated from the throttle valve by rods, the thermal stop being dispensed with. The Specification as open to inspection under Sect. 91 (3) (a) comprises a modification in which the valve is operated automatically by the differential expansion of the parts 2, 3, the sleeve 11 being secured to the valve stem 14 and the arm 15 dispensed with. This subject-matter does not appear in the Specification as accepted.
Patent GB-178692-A (GB)
Title: Improvements in or relating to mascots for use with motor cars or other moving objects
IPC: B60R13/00
Filed: 1921-03-24
Abstract: 178,692. Adams, H. F. March 24, 1921. Wind-propelled toys.-In mascots for motor vehicles or other moving objects, links 16 connect a crank rotated by an aerial propeller 9 to oscillating arms, wings 4 or the like. The wings are pivoted to the casing at points 6 and pass through slots therein. The casing is constructed with a removable base portion 2b.
Patent GB-141896-A (GB)
Title: A method of ornamenting cloth or other textile fabrics
IPC: A41D27/08
Filed: 1919-04-10
Abstract: 141,896. Kelly, H. L., and Johnson, J. M. A. April 10, 1919. No Patent granted (Sealing fee not paid). Ornamenting fabrics.-Consists in ornamenting cloth or other textile fabrics for cushion covers, fire-screens, show plates, &c. by attaching thereto an adhesive design to which portions of textile fabrics are stitched to throw parts of the design into relief. In the example illustrated, representing a figure for a showcard, the thin parts bare attached to the ground fabric a with adhesive, while the thicker parts c, d, e are attached by stitching, as shown by the dotted lines. Ends such as c<3> may be left unstitched. The details shown on the various parts are printed, or handworked in pencil, ink, paint, &c. Applications to ornamenting fabrics with flowers, landscape scenes, and other illustrations are referred to.
Patent GB-757706-A (GB)
Title: Improvements in or relating to textile carding and like machines
IPC: D01G15/20
Filed: 1953-04-07
Abstract: 757,706. Carding - engines. HOPKINSON, H. July 7, 1954 [April 7, 1953], No. 9371/53. Class 120 (1). A carding-engine constructed for operation in the woollen system of yarn production comprises a single swift with associated workers, strippers, and other rollers coacting with the swift over the major portion of its periphery, the arrangement being such that material fed to the machine at one side is carried around the swift and delivered therefrom at the same side. In the operation of the scribbler shown in Fig. 1, fibrous material is delivered by a scale pan 5 to a feed belt 3 and then conveyed by rollers 7 to tummer rollers 9 provided with divider rollers 11, 13, 15, the last roller 9 coacting with the swift 1 and angle worker 17 : around the swift are strippers 19 and workers 21, a fancy 23 and fly stripper 25, and doffer 27 from which a treated web of fibre is stripped by a fly comb 29, to be delivered by a Scotch feed, represented at 31, to a carding machine. In the machine shown in Fig. 2, fibrous material, e.g. a web as supplied from the scribbler of Fig. 1, is fed by a.belt 43 to feed rollers 45, and a licker-in 47 coacting with the swift 41 and an angle worker 49: around the swift are strippers 51 and workers 53, a fancy 58 and fly stripper 55, and a doffer 57 from which the carded web is removed by a stripper 59 and passed to a condenser. One or both machines may be arranged so that feeding occurs at the higher level and the material is passed around the swift in the opposite direction.
Patent GB-287931-A (GB)
Title: Improvements in lasts for shoes
IPC: A43D3/02
Filed: 1928-03-28
Abstract: 287,931. Amann, H. March 30, 1927, [Convention date]. Lasts.-In a two-part hinged last the meeting surfaces of the parts a, b are inclined towards the front of the last and are provided with curved corrugations as shown. The parts are connected by a link d pivoted to the rear part at e and connected to the front part by a slot f and pin g, and are also connected when in use by a screw i on other readily releasable device, such as a pin with eccentric portions.
Patent GB-125966-A (GB)
Title: Improvements in Self-centreing Chucks.
IPC: B23B31/163
Filed: 1919-04-12
Abstract: 125,966. Aktieselskabet Tekno Vaerket, (Assignees of Bjerregaard, D.). March 12, 1918, [Convention date]. Chucks.-In a chuck of the type in which the jaws 4 are adjusted by radial bevel pinions 9 engaging bevel teeth 8 on the scroll-plate 7, the end thrust of the scroll-plate, in order to prevent rearward endwise movement thereof during adjustment, is taken by the hub 1 and the casing 2, the radial shafts 10 of the pinions being for this purpose provided with rings 11 bearing on a smooth race 12 on the scroll-plate. The rings may be mounted as shown or between the pinions and the casing, and they may be either fixed to or revolubly mounted on the shafts. The hub and the casing are in one piece and the rear end is closed by a disk 13 secured to the hub by screws 14. The Specification in the original form as open to inspection under Sect. 91 (3) (a) states that the casing is in one piece, instead of being divided along a transverse plane passing through the axis of the bevel pinions. This subject-matter does not appear in the Specification as accepted.
Patent GB-120703-A (GB)
Title: Improvements in Rolling Mills.
Inventor: SAHLIN AXEL
IPC: B21B13/04
Filed: 1918-06-10
Abstract: 120,703. Sahlin, A. June 10, 1918. Rolling.-In a three-high rolling-mill having a fixed bottom roll, an adjustable top roll, and a floating intermediate roll, the two upper rolls are supported on counterweighted levers arranged below the housing. In the construction shown in Figs. 1 and 2, the bearings of the top roll 2 rest on four rods 9 which pass through the housing 1 to a cradle 11 provided with counterweights 12 arranged below the floor. The floating roller 3 is supported by four hollow rods 16 fixed to a cradle 17. A counterweight 25 tends to raise the roll by pulling down the rod 23 connected by the rods 21 and levers 19 to the cradle. The counterweight 25 slides on the rod 23 and is adapted to be raised when the delivery table 28 is raised through the levers 30, 32, and 34, thereby allowing the roll to drop. The lever 30 is provided with a counterweight to balance the table and minimize the power required to raise it.