baber/WOPTO huggingface dataset:
Patent GB-821181-A (GB)
Title: Means for eliminating "sneak" currents in cascaded magnetic amplifiers
Inventor: BONN THEODORE HERTZ
IPC: G11C19/04
Filed: 1957-04-08
Abstract: 821,181. Magnetic amplifiers. SPERRY RAND CORPORATION. April 8, 1957, No. 11373/57. Class 40 (9). [Also in Group XIX] In a cascaded arrangement of complementary magnetic amplifiers of the resetting type which operates as a shifting register for the purpose of converting serial information into parallel form or vice versa, each amplifier core has an auxiliary winding which is energized at the same time as the control winding and applies an opposing magnetizing force. The information applied to the register is in the form of unidirectional control pulses each representing a binary digit by its zero or finite amplitude, and the auxiliary windings are provided to neutralize the effect on succeeding amplifier stages of output current pulses of restricted amplitude which are consequential to demagnetization of a core by finite control pulses. Each amplifier is basically of the form shown in Fig. 1, and comprises a core 10 of rectangular hysteresis characteristic material such as Orthonik or Moly-Permalloy having a power winding 18 and a control winding 21. The windings are energized alternately by control and power pulses from sources 20, 16 which magnetize the core in opposite respects, and an output pulse of large magnitude is applied to a load 19 only if a zero control pulse is applied in the preceding control pulse period. An output current of restricted amplitude which drives the core to saturation is obtained, however, if the core is demagnetized in the preceding control pulse period by a finite control pulse. When the load 19 comprises the control winding of a further core, the demagnetizing effect of the latter output current may be neutralized by energizing an auxiliary winding on the further core during the power pulse periods. This neutralizing arrangement is utilized in a serial to parallel converter, Fig. 3, controlled from an information source 20. The converter is basically a shifting register comprising cores 30, 31, 32, 33 . . . the power windings of which are connected alternately to power pulse sources PP1 and PP2. Stepping of information applied to the first register core 30 is effected by the alternate application of power pulses from sources PP1 and PP2, and the effect of the output currents of restricted amplitude is neutralized by auxiliary windings 60-63 and 70<1>-74<1> which are respectively connected to sources PP2 and PP1 in series with resistors 64 and 75. The paralleled information is obtained from the output circuits of odd-numbered cores such as 31, 33, . . . , and is applied over leads 36, 38 . . . 44 to a dielectric or magnetic store P. The parallel to series converter, Fig. 4, operates in a similar manner, parallel information from a source P being applied simultaneously to the control windings of all the odd-numbered cores 55, 53, 51 of a shifting register, and the serial information taken out on lead 59 from the final amplifying stage 50.
Patent GB-1129411-A (GB)
Title: A profiling control device utilizing pulse motors
IPC: B23Q35/123
Filed: 1966-03-15
Abstract: 1,129,411. Template followers. FUJITSU Ltd. March 15, 1966 [March 15, 1965], No.11382/66. Heading G3N. [Also in Division B3] A profiling control device comprises a tracing head, detecting displacement of a stylus in at least two mutually perpendicular axes and the displacement in any direction converted to a detected displacement in one direction, and an index and function generator responsive to the detected displacements which controls variable frequency pulse generators determining the speed of pulse motors for the feed axis in use of the device. As shown a tracer head comprises a stylus 2, for engaging a template, not shown, which is angularly movable about a spherical seat 5 and axially displaceable in a frame 1. A conical seat 4 is formed at the top end of the stylus engaging a conical seat 8 through a ball 7. The assembly 2, 5, 4, 7, 8 is loaded by a spring 9. Movement of the stylus in a X or Y direction is sensed by differential transformers, such as a transformer 13. Movement in the Z direction, together with components of the X and Y movements, are sensed by a differential transformer 10. In a modification the Z -axis movement only is separately sensed by a differential amplifier. The outputs of the differential transformers are amplified and applied to an angular index servo and function generator mechanism, comprising coupled resolvers. The outputs of the function generator are rectified to control the pulse frequencies of oscillators which, through a gating network, determine the rotation of X, Y and Z axes pulse motors positioning an arm carrying the tracer head and a cutter engaging two-dimensional workpiece. In the modification, the differential transformer separately sensing Z -axis movement controls the Z -axis pulse motor to enable processing of a workpiece in three-dimensions. The pulse motors are electro-hydraulic and comprise a step motor coupled to a feedback type hydraulic motor the angular rotation of which is proportional to the number of pulses applied to the step motor.
Patent GB-728021-A (GB)
Title: Improvements in and relating to building blocks for the construction of cavity walls
IPC: E04B2/42
Filed: 1953-04-24
Abstract: 728,021. Building blocks. DISKIN, S. April 24, 1953 [Dec. 17, 1952], No. 11432/53. Class 87 (1).  A building block comprises inner and outer plates 1, 2 relatively displaced vertically and connected together by an inclined upper web 3 and preferably by a lower web 4. The ends of the blocks are tongued and grooved, the tongues being of greater height than the grooves to provide mortar spaces 5.
Patent GB-1127115-A (GB)
Title: Improvements in or relating to electrical control circuits
IPC: H02M5/257
Filed: 1966-03-16
Abstract: 1,127,115. Semi-conductor switching circuits. ARENCO A.B. 16 March, 1966 [26 May, 1965], No. 11445/66. Heading H3T. [Also in Division B5] In a circuit for stabilizing the energy content of pulses against variation in supply voltage, the duration of pulses is made inversely dependent of the supply voltage by a circuit comprising variable resistor 13, capacitor 12 and Zener diode 11. To initiate each pulse, contacts 4 and 17 are closed enabling capacitor 12 to charge from the alternating current supply 1, after rectification at 2, at a rate depending on the setting of the variable resistor 13. Thyristor 20 is triggered when contacts 4, 17 are closed, initiating an alternating current pulse in load 5. When the capacitor 12 is charged to the break down voltage of Zener diode 11, thyristor 10 becomes triggered, short-circuiting the gate circuit of thyristor 20 and terminating the alternating current pulse in load 5. A further circuit comprising components 31, 27, 19, 24 having a different charging time constant may be provided so as to arrange that the current in load 5 during part of the pulse (when both capacitors 12, 28 are charging) is different from that during the remainder of the pulse. The circuit is reset by closing contacts 4, 18, capacitors 12, 28 discharging via diodes 14, 30. In Fig. 3 (not shown) thyristors 19, 20 are replaced by electromagnetic relays the contacts of which control the presence and absence of two variable resistors (38, 39) connected in a phase-controlling trigger-module arranged to control the angle of fire of a pair of thyristors connected back-toback in series with the load. The invention is applicable to control of current in a pair of plastics welding jaws so that a high current is initially provided, becoming reduced after a pre-determined time.
Patent GB-114724-A (GB)
IPC: G01C9/12
Abstract: 114,724. Miller, A. R. June 22, 1917. Clinometers. - A clinometer comprises a casing A filled with liquid and fitted with a scale K, and a buoyont air or gas compartment F, in the form of a segment of a cylinder, and carrying one or more indicating marks, mounted on pivots E coaxial with the cylinder; the compartment F is completely submerged in the liquid and is protected from surface action by a cylindrical shell L having perforations M, N. The casing A has a glazed front B, and the back may also be glazed or be made flexible to permit of expansion of the liquid. The instrument may be mounted on pivots in a bracket so that it may hang vertically, the axis of the pivots being at right-angles to the axis of the pivots E.
Patent GB-813641-A (GB)
Title: Improvements in suction rolls for paper making machines
Inventor: STEWART ALEXANDER ERIC
IPC: D21F3/10
Filed: 1956-04-16
Abstract: 813,641. Suction rolls of paper-making machines. DOMINION ENGINEERING WORKS Ltd. April 16, 1956, No. 11489/56. Class 96. The suction box G, 7, Fig. 3, of a suction roll 2 of a paper-making machine has a flattened top 8 with a series of longitudinal slots 10, a similarly-apertured plate 15 being secured to the top 8, the plate 15 being recessed to receive a tube 22, Figs. 3 and 7, which, when inflated, forces upwardly, against spring action at 28, 39, a platform 16 for the suction mouth, the side walls 17 of which carry holders 42 for sealing strips 34 which are thus pressed against the roll shell which may have an outer rubber sleeve 5. Skirts 11 and 27 prevent the entrance of solid matter between the plate 15 and the platform 16. A gear &c. enables the suction box to be adjusted rotatively about the axis of the roll, and the length of the suction mouth is adjustable to suit the width of the paper being made.
Patent GB-120186-A (GB)
Title: Lock.
Inventor: FAIRWEATHER WALLACE
IPC: E05B63/00
Filed: 1918-07-13
Abstract: 120,186. Fairweather, W., (Singer Manufacturing Co.). July 13, 1918. Locks, square - key etc.; cases.-A lock for sewing-machine cabinets &c. has the casing 1 and bolt 11 each stamped from a single piece of sheet metal. The bolt 11 is stamped with a slot 14 for the key and with an indentation 15<1>, producing on the opposite face a boss 15 which works in the aperture 4 in the front of the casing. When the parts of the blank shown in Fig. 1 have been bent up to enclose the bolt, one of the members 7 acts as a bow-spring with a. projection 5<1> which snaps into holes 13 to retain the bolt in either of its extreme positions. When applied, as shown in Fig. 5, to a sewing-machine cabinet, the lock is dropped into a slot in the bar b of the framework; the upper prongs 10 rest on the top of the bar and the lower prongs are bent up against the bottom to secure the lock in place. The ends of the bolt 11 may be received in slots f to secure drawers above and below. or the bolt may be made shorter to lock a single drawer.
Patent GB-1399652-A (GB)
Title: Stackable containers
IPC: B65D5/00
Filed: 1972-03-13
Abstract: 1399652 Stackable containers MACMILLAN BLOEDEL CONTAINERS Ltd 7 March 1973 [13 March 1972] 11547/72 Heading B8P A stackable container folded from a rectangular or polygonal blank includes at least one stacking projection 7 reinforced by a member 11  and formed by pushing inwardly a portion of the blank defined between two cuts (C, D) Fig. 1 (not shown). One or two stacking projections 7 may be formed in each of a pair of opposite end walls 3, 4 of a tray. When each end wall includes two stacking projections, the projections on each wall may be reinforced by a single member or individual members.
Patent GB-115651-A (GB)
IPC: D05B57/02
Abstract: 115,651. Thompson, W. P., (Union Special Machine Co.). Oct. 28, 1916, Sewing-machines; cords, braids, and surface threads, &c., attaching.-Relates to sewing-machines of the type employed in covering previously formed seams of various articles, particularly for covering shoulder seams of knitted sweaters, and consists in an arrangement in which a pair of spaced needles and a single looper co-operate to lay a cross thread on the underside of the seam only, a reinforcing tape being guided against the under face of the fabric so that it will be stitched by both needles and partly covered bv the cross thread; the machine is provided with a differential feeding-mechanism for gathering the fabric as it is fed to the stitching-mechanism. The invention is preferably applied to a " feed-up-the-arm " machine which comprises the usual cylindrical work-support, an overhanging arm, a presser-foot, a pair of spaced needles, a single threaded looper co-operating with both needles, and a differential feeding mechanism. A pair of needles 9, 10, Figs. 1, 2, and 5, is carried by a needle bar 8 which is mounted in an overhanging arm 7 and reciprocated through a link 13 and an oscillating needle lever 11 from the main shaft 13<1>. The looper 17 is mounted on a shaft 16 in the usual cylindrical work support 6, and has the usual fourmotions imparted to it. The support also contains a main feed-bar 18 which carries a main teed-dog 19 and has slidingly mounted in it a differential feed-bar 20 carrying a differential feeddog 21. These feed-dogs are adapted to rise through slots in a throat plate 23, Fig. 3, which is formed with the usual needle openings and with an elongated slot 24 for the covering tape T. This slot is located between the feed-dogs and the tape is led to it through openings 29, 30 in the usual detachable end cap 28 of the work-support 6. The feed-dog 21, which has a longer feed stroke imparted to it than that of the feed-dog 19, comprises three sections 25, 26, 27, Fig. 3, the outer sections 25, 26 being longer than the section 27 so as to gather the fabric and carry it up to the needles, while the section 27 assists in feeding the gathered material up to the tape T. In operation, the seamed knitted sections S, S' of the fabric ara fed through the machine as shown in Fig. 5, the needles 9, 10 entering the sections on either side of their seam and also engaging the tape T, while the looper thread co-operates with the needle threads and lays a cross thread against the underside of the tape, as shown in Fig. 7.
Patent GB-417614-A (GB)
Title: Improvements in and relating to lids, covers, stoppers and like closures
IPC: B60K15/04
Filed: 1933-04-20
Abstract: 417,614. Filler - caps for tanks; port-hole closures. FRONTERAS, E. M., 59, New Oxford Street, London, and BONORA, G., 185, Via Maggiore, Bologna, Italy. April 20, 1933, No. 11572. [Class 125 (iii).] A filler-cap for a tank or a closure for a port-hole &c. comprises a cover 1 hinged to a carrier 4 on the tank or other member to which the closure is applied, and an arm 5 which is substantially rigid and has a screwed pivotal connection with the carrier 4, so that, as it is swung towards the cover, it screws itself down thereon and forces the cover on to its seating. As shown the carrier 4 is in the form of a collar which forms the seating for the cover and the arm bears on a doomed central portion 12 of the cover as it moves to the closing position ; the arm is curved laterally at the part 10 to engage an abutment 11 on the cover and move the latter to the open position when the arm is swung away from the cover. The arm may have a screwed vertical portion 6 engaging a tapped lug 8 on the collar 4 or may have an internally screwed boss engaging a screwed stud projecting from the collar ; the arm may be mounted in or on a bracket secured to a neck on the part to which the closure is applied. Specification 305,638, [Class 125 (iii)], is referred to.
Patent GB-211754-A (GB)
Title: Improvements in and relating to collapsible buckets or like receptacles
IPC: A47J47/18
Filed: 1923-04-30
Abstract: 211,754. Stephens, G. R. April 30, 1923. Buckets; lids and covers; bodies; handles. - A collapsable bucket. or like receptacle comprises telescopic annular sections 1, Fig. 2, of aluminium, &c., the lowermost section 2 having a flanged bottom formed with a circumferential groove 6 in which the depending clamps 7 of the flanged cover 8 engage when the cover is fitted over the collapsed bucket &c., as shown in Fig. 1. The upper edge of the cover has an enlargement 80 to serve as a hand-hold. A chain handle detachably hooked into holes 4 in the uppermost section of the bucket may be provided.
Patent GB-1511301-A (GB)
Title: Pulse controlled system
IPC: H02M3/135
Filed: 1975-03-20
Abstract: 1511301 Control of DC motors GENERAL ELECTRIC CO 20 March 1975 [1 April 1974] 11615/75 Heading H2J A pulse controlled power system for controlling the power supplied to a load from a D.C. source comprises a switching circuit having main switching means (defined as a switch of the controlled semiconductor type made conductive by a gating signal and made non-conductive by a commutating circuit) for controlling the current from the source to the load, the series combination of a capacitor, inductive means and a first unidirectional conducting means, said combination being connected in parallel with the main switching means and the load, a second unidirectional conducting means connecting the capacitor across the load and poled in a direction opposite to that of the main switching means, and a gating control for periodically initiating conduction of the main switching means and the conduction of one of the unidirectional conducting means to effect commutation of the main switching means, the switching circuit including no more than two unidirectional conducting means in addition to the main switching means. In Fig. 1 the load is a D.C. series motor 14 whose armature and field windings 16, 18 are supplied from a battery 10 through a main SCR 24 having a variable mark/space ratio determined by gating control 26, which also controls auxiliary SCR's 32, 34. The former is series-connected with capacitor 30 and the secondary winding 36 of a transformer 23 whose primary winding 22 is in series with members 16, 18, 24. When SCR 32 is fired, the capacitor 30 charges from battery 10 until its voltage is sufficient to turn off SCR 32, the capacitor voltage attaining a value greater than that of battery 10 due to the action of transformer 23, which is carrying the motor current consequent upon firing of SCR 24. Since the positive terminals of members 10, 30 are connected together, the negative capacitor terminal will be negative with respect to that of the battery. This condition is used to turn off SCR 24 when control 26 turns on SCR 34, whose conduction also allows reversal of charge on capacitor 30. The circuit shown permits periodic charging of the capacitor 30 irrespective of whether it effects commutation of SCR 24, thus enabling a succession of commutation attempts to be made, subject to a maximum allowable conduction period for SCR 24. In modifications, Figs. 2 and 3 (not shown), the transformer is omitted, an inductor (46) is inserted in series with the capacitor 30 and their junction is connected to that between members 18, 24 through a diode (44), Fig. 2 (the natural resonance of members 30, 46 partly determining the time of commutation), or through SCR 34 in which case SCR 32 is replaced by a diode (42), Fig. 3.
Patent GB-553341-A (GB)
Title: Improvements in sensitive photographic stripping materials
IPC: G03C1/805
Filed: 1941-09-10
Abstract: 553,341. Photographic stripping material. KODAK, Ltd. (Eastman Kodak Co.). Sept. 10, 1941, No. 11628. [Class 98 (ii)] Dry-stripping photographic material comprises a temporary support having a hydrophilic substratum such as gelatin coated thereon, a stripping layer of wax which has been polished by calendering, a cellulose ester permanent support, and a sensitive photographic emulsion layer inseparably coated on the permanent support. A gelatin or other substratum layer may be provided between the permanent support and the emulsion layer. The cellulose ester may be cellulose nitrate, acetate, or acetate-propionate. The temporary paper support may be sized with gelatin. The gelatin coating applied to the temporary support may consist of a 7 per cent gelatin solution containing chrome alum. The wax coating is applied from an aqueous emulsion of carnauba wax prepared by adding wax to boiling water; adding sodium hydroxide, passing through a colloid mill, and diluting with water. The celulose nitrate support may be plasticized with castor oil. The silver halide emulsion may contain starch as a matting agent. The material may be used in colour photography, for example in the production of a masking image. Specifications 12152/99, [Class 98], 29616/12 and 12091/15, [both in Class 98 (ii)], are referred to.
Patent GB-721673-A (GB)
Title: Improvements in or relating to adhesive tapes
Inventor: WILLIAMS PHILLIP LEONARD
IPC: C09J7/50
Filed: 1951-05-18
Abstract: A priming coat for application between a cellulosic film and a pressure-sensitive adhesive comprises a mixture of polymers of which one is natural rubber and an organic polyisocyanate.  The rubber may be raw or reclaimed.  Suitable polymers to be used in admixture with the natural rubber may be rubbery, e.g. modified natural rubbers or synthetic rubbers, such as polyvinylisobutyl ether or polyisobutylene, or non-rubbery, e.g. cyclized or isomerized rubber, chlorinated rubber, polystyrene, or styrene-butadiene copolymer.  The rubber and polymer or polymers are dissolved in a common solvent, e.g. toluene, for application.
Patent GB-1503444-A (GB)
Title: Non-greasy compositions
IPC: A61K9/06
Filed: 1976-03-23
Abstract: 1503444 Topical compositions MINNESOTA MINING & MFG CO 23 March 1976 [24 March 1975] 11672/76 Heading A5B Non-greasy occulusive compositions for topical application to the skin as cosmetics or ointment bases comprise 40 to 90% by weight of a viscous base comprising solid petroleum, animal oils, mineral oils and/or synthetic oils, in which the oils have been thickened with wax and/or a hydrocarbon polymer, and 10 to 60% by weight of an ointment forming powder which is non-irritating to human skin, solid at 25C, insoluble in water and the other components of the composition, has a number average dimension of less than 30 microns and is substantially non-absorbent to the viscous base at temperatures below 50C, the ointment forming powder having been mixed with the viscous base at a temperature of less than 50C. The ointment forming powder may be a polyolefin such as polyethylene, hydrated magnesium silicate or hydrated aluminium silicate. The thickening agent may be a polyolefin e.g. polyethylene or cholesterol. The composition may also contain a styrene copolymer and/or a consistency modifier. The composition may be in the form of an ointment; lotion or cream. The composition may contain a medicament such as a corticosteroid e.g. dexamethasonet-butyl acetate, bacitracin, neomycin sulphate or polymyxin B sulphate.
Patent GB-782299-A (GB)
Title: Improvements relating to voltage transformers
Inventor: WITHERS BERTIE
IPC: H01F38/26
Filed: 1955-04-22
Abstract: 782,299. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd. April 6, 1956 [April 22, 1955], No. 11713/55. Class 38 (2). A voltage transformer comprises a number of wound laminated core units 1 about each of which is wound a toroidal winding 2, these windings being joined in series by the connections 4 to form the whole high voltage winding. Each core unit is maintained at a static voltage which is appropriate to the voltage appearing across its respective winding, so that the necessary insulation between each core unit and its winding is reduced. A low voltage winding which links the core units is insulated from them by tubes 3, 6. Alternatively, the low voltage winding may also be formed from a number of sections carried by the core units. The core and its windings are insulated by tape or by encasement in moulded butyl rubber or cast resin.