baber/WOPTO huggingface dataset:
Patent GB-154316-A (GB)
Title: Improvements in and relating to steam boilers
IPC: F22G7/14
Filed: 1919-08-22
Abstract: 154,316. Marks, E. C. R., (Locomotive Superheater Co.). Aug. 22, 1919. U-tube superheaters; dampers for controlling superheaters.-In a water-tube boiler having front and rear headers, baffles are so arranged as to direct the gases in two separate paths, the gases in one path flowing over the portion of the tubes between a baffle and one of the headers, and in the other path over a superheater and then over the portion of the tubes between the baffle and the other header. Furnace gases are directed backwards and forwards over the front portion of the tubes 1 by longitudinal baffles 8, 9, 10. The middle baffle 9 stops short of the rear header and a vertical baffle 17 extends downwards from its rear end, thus directing part of the gases downwards over a superheater placed behind the bridge 7. The superheater, which may be arranged wholly on one side of the vertical baffle, consists of sinuous tubes 13 connected to headers 11, 12 supported in the boiler walls. A damper 19 controls the passage of the gases over the superheater. In a modification, the middle baffle is dispensed with, the vertical baffle extending downwards from the rear of the top baffle, which terminates short of both headers.
Patent GB-1066641-A (GB)
Title: A control arrangement for controlling a current converter device
IPC: H02M1/08
Filed: 1964-05-19
Abstract: 1,066,641. Semi-conductor pulse generator circuits. SIEMENS-SCHUCKERTWERKE A.G. May 19, 1964 [May 17, 1963], No. 20690/64. Heading H3T. [Also in Divisions G3 and H2] A phase (i.e. firing point) control circuit for a controllable converter element 3 comprises a trigger circuit whose control circuit includes a capacitor 12, the charging of this capacitor being dependent on a magnetically sensitive resistor 16. As shown, a load 2 is supplied through a rectifier 3 and during the positive half-cycle a direct voltage is developed across a Zener diode 7. This is applied to a unijunction transistor 10 which constitutes the trigger circuit. The capacitor 12 is connected in the emitter circuit and is charged via a transistor 13 whose baseemitter circuit includes a resistor 16 which is sensitive to a magnetic field applied by an electromagnet 20, preset resistors 14, 15, being included and set so that the magnetic field may effect control from substantially 0 degrees to 180 degrees delay. The current in the control winding of the electromagnet is obtained by means of an automatic regulation device 21 to which is applied an actual current signal derived from a Hall device 22 and a desired current signal derived from terminal 23. In modifications, the resistor 16 may be interchanged with resistor 14 or resistor 15. In a further embodiment (Fig. 2, not shown) a permanent magnet replaces the magnet 20, its position relative to the resistor 16 or the position of a magnetic shunt across its polepieces varying the magnetic field and hence the firing angle. A thyristor may replace the unijunction transistor.
Patent GB-1338677-A (GB)
Title: Digital control system
IPC: H02P7/292
Filed: 1971-04-19
Abstract: 1338677 Automatic control of speed GENERAL ELECTRIC CO 19 April 1971 [5 Feb 1970] 20746/71 Heading G3R In a digital system as for controlling the output of an A. C. power-source 1 Fig. 1 to a D.C. motor 2 in which oppositely poled thyristors or SCRs 3(a-c), 4(a-c) are fired with a controlled phase delay, firing circuits 5(a-c) are repeatedly loaded according to the digital output of a digital error generator 7 at times determined by a phase detector 9, and continue to count pulses from a clock generator 10, to give a signal firing the relevant thyristor when a predetermined count is reached. The phase detector 9 controls the loading of the input from the error generator 7 by signals on lines 9(a-c)-12(a-c) and also acts as a square wave generator and detector whereby the registers of counters in the firing circuits 5(a-c) are set either to a positive count and counting up for the positive phase or to a "two's complement" setting, counting down for the negative phase. Outputs on lines 15(a-c) 16(a-c) from the phase detector 9 also determine which each pair of thyristors 3(a-c) or 4(a-c) is to be fired. The thyristors are arranged to start firing only during the last 120 degrees of each half cycle under maximum error signal conditions, the clock 10 therefor having a frequency which permits a delay of 120 degrees before the full count is reached. The arrangement also permits the thyristors to conduct for 60 degrees in the negative half of each phase cycle to permit dynamic motor braking. Control of the output from "phase detector" unit 9 for each phase can therefore be controlled by the change in polarity occurring in the preceding phase which occurs 120 degrees earlier at a time when the error signal for the following phase must be loaded. Alternative systems are referred to in which the digital error generator 7 may operate either by comparing digital numbers or pulse frequencies representing speeds and generated by the command generator 6 and a feed back device 8 associated with the load 2.
Patent GB-731911-A (GB)
Title: Let-off motion for looms
Inventor: WALKER DAN
IPC: D03D49/08
Filed: 1949-08-10
Abstract: 731,911. Let-off motions for looms. WALKER & CO. (TEXTILE ACCESSORIES & EXPORTERS), Ltd., D. Aug. 10, 1950 [Aug. 10, 1949], No. 20766/49. Addition to 626,674. Drawings to Specification. Class 142(2). [Also in Group XXXIV] The brake band of the parent Specification is now made in two or more segments linked together.
Patent GB-459604-A (GB)
Title: Improvements in and relating to devices for use in cutting or penetrating walls
IPC: B28D1/14
Filed: 1935-07-24
Abstract: 459,604. Drilling-machines. APPLEYARD, R. F., 66, Erskine Road, Sutton, Surrey. July 24, 1935, No. 21011. [Class 83 (iii)] A machine for use in penetrating or cutting rock, stone, brickwork, &c., has a carriage for holding a power-driven cutting tool slidable along a base and a hand-operated lever or toggle linkage pivoted to the base and adapted to bear against any one of a number of spaced abutments on the carriage for feeding the tool to the work. The machine comprises a U-shaped base consisting of angle bars 1 braced together by flat ties 1a, 1b, 1c, through which the drill carriage 2 slides. The carriage 2 is U-shaped in cross-section and supports a rotary power-driven drill 3 at the forward end. A yoke-shaped hand lever 4 is pivoted to the base 1 at 5 and is connected by a link 7 to a stirrup 9 pivoted to the base at 10. A strut 11 is pivoted to the stirrup 9 at 12 and engages one of a number of cross-bars 14 on the carriage to feed it forward on actuation of the hand lever 4. A spring may maintain the strut in engagement with the carriage if the latter is inverted and a pawl 15 may be rocked against a spring 16 by a hand operated cam 17 for engagement with a bar 14 to withdraw the carriage. For drilling holes near the floor level the base 1 may rest on or be attached to the floor, a rear abutment being used if necessary, but for holes at higher levels the base may be attached to a portable frame consisting of angle-bar uprights 18 and a base 19. Cross-bars 21 surrounded by fibre &c. sleeves 31 support U-shaped brackets 24 carrying central studs 25 which have plates 26 attached thereto so as to lie transversely above the base to form a slidable connection. Plates 27 freelv mounted on the studs slide between the side members of the base. The ends of the bars 21 engage slots 20 formed in the uprights 18 and may be locked therein by clamps 29 or screws 30 attached to the uprights. The base may be angularly adjusted in a vertical plane by means of the slots 20 or in a horizontal plane bv varying the position of the rear stud 25, the linkage 4 .. 11 may be varied by means of different pivot holes in the links 4, 9 and the position of the linkage on the base may be varied by moving the pivots 5, 10. The bars 21 may be removed from the base 1 by rotating them through 90‹ and withdrawing the plates 26, and the frame 18, 19 may be transported by means of removable wheeled battens 22. Jack feet 23 enable the frame to be levelled, and are preferably faced with rubber, cork, &c. to ensure silence of operation of the machine and to provide a grip on a smooth surface. An abutment 28 on the base 1 engages the forward plate 26 during operation of the machine. The machine may be used for cleaning boiler and condenser tubes &c. in heating installations, and the Provisional Specification states that a rotary drill bit on the carriage may be driven by a flexible shaft from a prime mover.
Patent GB-955910-A (GB)
Title: Styrene, acrylonitrile and dimethyl fumarate polymers
IPC: C08F220/44
Filed: 1962-05-31
Abstract: A tertiary copolymer of styrene, acrylonitrile and dimethylfumarate is prepared by heating at a temperature between 40 and 120 DEG C. for some days, and preferably in the presence of catalysts such as peroxides or hydroperoxides, 30 to 90% by weight of styrene, 5 to 30% by weight of acrylonitrile and 5 to 70% by weight of dimethyl fumarate.  Catalysts mentioned are benzoyl and lauryl peroxides.  The tertiary copolymer may be used for the preparation of extruded and injection moulded articles.
Patent GB-1223436-A (GB)
Title: A rubber ring applicator for lamb and calf tail docking and castrating purposes
Inventor: FERGUSSON KEITH ARNOLD
IPC: A61D1/06
Filed: 1968-05-03
Abstract: 1,223,436. Dispensing 0-rings. K. A. FERGUSSON. 3 May, 1968 [5 May, 1967], No. 21045/68. Heading B8S. [Also in Divisions A5 and F2] In a method of castrating or docking the tail of an animal, Fig. 1 shows the applicator as a whole, the 0-rings 5 being located in the magazine 4, and the hook 10 being located directly above the magazine and in the plane of the end 7 of the tube (6) from which the rings are ultimately dispensed. The tube end 7 is joined to a tube portion which has a cutout 11 constituting an inspection window, the other end 8 of the tube being knurled so that it can be rotated manually. The tube is fitted in an outer tube 2 which also has a window 3. When the inner tube is rotated the hook 10 rotates with it and picks up the top ring from the magazine, in so doing causing it to pass on to a spike 16, Fig. 8. Continued rotation of the tube 6 and hook 10 causes the ring to be transferred from the spike to the tube end in a manner evident from Fig. 8. The trigger 22 of Fig. 1 can subsequently be operated to cause a pusher 69 to move axially of the tube and push the ring off its end.
Patent GB-154914-A (GB)
Title: Electromagnet for locking devices
IPC: B64D1/02
Filed: 1920-07-12
Abstract: 154,914. Luftfahrzeugbau Sch³tte - Lanz, (formerly Luftschiffbau Sch³tte-Lanz). Dec. 9, 1916. [Convention date]. No Patent granted (Scaling fee not paid). Dropping bombs and other articles from a height.-In electromagnetically released locking devices, such as are used for throw-off bolts or hooks for aircraft, load hooks or the like, the locking member or intermediate locking member is locked and released by two armatures having different directions of movement and operated by the same or by two electromagnets. In the form shown in Fig. 1, the divided arm g, h on the hooklever f, which supports the load, is held by two pivoted spring-connected armatures d, e. The armatures move in opposite directions in the same plane so as to release the lever when the magnet a is energized, and they may be arranged with their axes at right angles instead of parallel, as shown, in order to minimize the possibility of the lever being released by extraneous vibrations. In an alternative form, the members g, h extend belcw the magnet and the armatures are pivoted above it. Fig. 3 shows an arrangement in which the armatures r, s act on an intermediate frame comprising members x, x<1>, y, y<1> pivoted at wand joined by a transverse bar z which carries the locking device for the load-lever f. When the magnet t is energized, the first movement of the armatures releases the members x<1>, y<1> Further movement causes the arms u, v to strike the arms x, y and move the frame to the releasing position against the action of the springs. In another modification, the intermediate members x, x<1> and y, y<1> are independently pivoted and are so arranged that the release and actuation of each are respectively effected by different armatures. The single magnet t may be replaced by two magnets. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the single-magnet form shown in Fig. 1 (Cancelled), in which the hook f supporting the load g is released by the armature d which is attracted to the magnet a after the locking armature e has freed its lower end, the mass of the armatures or air-gap dimensions being so proportioned as to give the required sequence of action. Alternatively, separate windings or a divided magnet coil may be arranged to give a preliminary weak current to actuate the armature e, or separate magnets may be employed. Also the two armatures may be connected by levers, pawls, or other transmission members. The Specification also contains a statement that the device is applicable to bomb-releasing, and a general claim for an electromagnet for electrically-locked release devices characterized by having an additional electromagnet which locks the armature effecting the release. This subjectmatter does not appear in the Specification as accepted.
Patent GB-296537-A (GB)
Title: Improvements in or relating to holders for safety razor blades
IPC: B24D15/10
Filed: 1928-05-10
Abstract: 296,537. Moore, L. May 10, 1928. Razors, safety.-In a holder for stropping safety razor blades comprising plates 9, 10 hinged or riveted together, or integral with one another, at one end 11, and provided with a ferrule 14, or hinged clip 21, Fig. 8, at the other end, the plates 9, 10 are each slotted at 15 to accommodate the beaded edge 17 of a reinforced blade 16. The holder may be used to strop a wafer blade. Specification 290,062 is referred to.
Patent GB-662388-A (GB)
Title: Improvements in or relating to brushes
IPC: A46B15/00
Filed: 1949-08-12
Abstract: 662,388. Brushes. STRASBURGER, Ltd., D., and STRASBURGER, D. June 22, 1950 [Aug. 12, 1949], No. 21084/49. Class 19 A brush in which the stock including the bristles is detachable comprises a head with a marginal edge of channel section having the sides of the channel inwardly directed, a back-plate carried around its periphery by the marginal edge, a stock having an outwardly-directed flange and a releasable spring catch both to be received behind one side of.the marginal edge. Preferably the marginal edge of the head comprises a strip bent to a square, circular, oval or other outline, its ends being formed as lugs which pass down inside a handle of the brush, the spring catch engaging behind that portion of the handle which receives said strip. In the figures the head of the brush 1 is formed from a strip 2, of channel section, its ends forming lugs 3 which pass into the hollow handle 4. The back plate 6 is received by the channel section and is supported by one side thereof 7. The backplate has welded to it a metal strip 8 which passes into the handle between the lugs 3. The stock 9 is made of wood and is slightly smaller than the oval outline of strip 2. A flange 10 projects from one end of the strip opposite the handle and lies behind one side of the strip. A spring catch 12 comprising a flat metal strip is secured to the stock and can be pressed inwardly towards the stock. The catch is formed with a strip 13 to engage behind the part of the handle 15 which receives the end of the strip. The stock is attached to the head by placing its flange 10 behind the side 11 of the strip and pressing the stock into the head opening so that the step 13 on the catch springs behind the portion 15 of the handle. The stock may be removed by releasing the catch. The design of the brush may be modified by having a solid handle or the channel strip may be integral with the back. Alternatively the handle and head may be made in two pieces from stampings or pressings, the back piece comprising half the handle and the back plate and the other piece being similar in shape but having an opening to receive the stock; the two pieces are joined by soldering or brazing them round the edge.
Patent GB-462152-A (GB)
Title: Improvements in roentgen ray apparatus
IPC: H05G1/06
Filed: 1936-07-30
Abstract: 462,152. Electric transformers. SIEMENS - REINIGER - WERKE AKT.- GES. July 30, 1936, No. 21121. Convention date, Aug. 26, 1935. [Class 38 (ii)] [Also in Group XX] In R÷ntgen-ray apparatus in which the raytube, high-tension transformer, and a separate cathode - heating transformer are housed in a common casing, the secondary winding of the heating transformer and at least that part of its core which it surrounds are combined into one unit with the secondary winding of the high-tension transformer by a common insulating wrapping. As shown, the casing 1 encloses the ray-tube 2, H.T. transformer 3, 4, 5, and heating transformer 8, 9, 10. The H.T. secondary winding 4 and the leads 7 to the ray-tube are wrapped with insulating paper 6 which also surrounds the secondary winding 8 of the heating transformer and its open core 9. The primary winding 10 of this transformer surrounds the wrapping. To facilitate assembly of the primary, the wrapped part of the heating transformer may be formed as a salient from the common wrapping. The core 9 may be extended outside the wrapping so that it is almost closed.
Patent GB-614649-A (GB)
Title: Improvements in gas heat exchangers for absorption type refrigerating systems
IPC: F28F13/12
Filed: 1946-07-15
Abstract: 614,649. Refrigerating; tubular heatexchange elements. BOLINDERS FABRIKS AKTIEBOLAG. July 15, 1946, No. 21171. Convention date, July 31, 1945. [Classes 29 and 64(iii)] In a continuous cycle absorption refrigerating system of the inert gas type, a gas-heat exchanger comprises a pipe member divided by a longitudinal partition 4 welded in the pipe 1, 2 into two channels 9, 10, U-shaped metal fins 5 being welded to each side of the partition 4 along the base 6 of the U at an oblique angle to the length of the pipe and perpendicular to the partition 4. The fins are of triangular shape. In a modification, Fig. 4, each U- shaped fin is divided into two parts 7, 8 which are welded in spaced relation along the pipe 1, 2. In a further modification, Fig. 6 (not shown), the dividing partition 4 is dished towards the central axis of the pipe 1, 2 so that the inert gas and ammonia mixture in the upper path of flow 9 tends to remain along the axis of the pipe 1, 2. The two halves 1, 2 of the pipe are welded to the partition 4.
Patent GB-820760-A (GB)
Title: Improvements relating to safety devices for machines for making prints
Inventor: WILDE FREDERICK G
IPC: G03B27/14
Filed: 1957-07-04
Abstract: 820,760. Machinery safety devices. PARAGON-REVOLUTE CORPORATION. July 4, 1957, No. 21234/57. Class 80 (4). [Also in Group XX] In a machine for making blueprints and the like, wherein material such as a tracing and a length of sensitized paper is fed at an inlet 70, Fig. 2, between upper and lower endless feed belts 22, 23, a horizontal trip bar 50 is mounted on spring - loaded pivoted arms 51 slightly below the upper reach of the belt 23 so that should an operator's hand become caught between the feed belts the belt 23 yields sufficiently to depress the bar 50 and thereby actuate a microswitch 65 which reverses the direction of travel of the feed belts. The switch 65 may be connected to a time relay so that if it is tripped the belt-driving motor is reversed for a predetermined time and is then stopped. Alternatively the switch may be connected so that the motor is reversed only so long as the switch is held depressed. The machine has a series of parallel narrow upper belts 22 and parallel narrow lower belts 23, the material being fed between the belts 22, 23 to a glass contact cylinder 27, Fig. 1, containing a quartz lamp and being carried around the cylinder by the belts 23 which then deposit the tracing in a tray and move the printed paper to the back of the machine. The bar 50 is positioned slightly forward of the forward roller 24 carrying the belts 22. The arms 51 are pivoted on the axis of the forward roller 25 carrying the belts 23 and are urged upwardly against stops by springs so that the bar 50 is normally about one-quarter inch below the upper reaches of the belts 23. The switch 65 is actuated by a pin 60 adjustably threaded in the bar 50.
Patent GB-1019127-A (GB)
Title: 1,5-diphenyl-3-aroxyformazanes
Inventor: NESYNOV EVGENY PETROVICH
IPC: C09B50/00
Filed: 1964-05-22
Abstract: The invention relates to formazyl compounds of the formula <FORM:1019127/C4-C5/1> in which R is an aryl radical.  The compounds may be prepared by treating 1,5-diphenyl-carbazone salts in the enol form with diazonium salts in neutral solution with cooling.  Examples are given of the preparation of compounds in which R in the formula is o-chlorophenyl, o-nitrophenyl and p-nitrophenyl.
Patent GB-258071-A (GB)
Title: Improvements in bunsen burners for gas-heated potato and fish frying pans
IPC: F23D14/10
Filed: 1925-08-26
Abstract: 258,071. Walton, T., and Walton, C. Aug. 26, 1925. Atmospheric gas burners; burners, arrangement of.-A main burner for heating potato and 'fish-frying pans and having outlet apertures formed in a substantially flat plate c is combined with a supplementary burner, the head m<1> of which is arranged on a slightly higher level than, and at one end or side of, the plate c and is provided with outlet apertures q to protect a substantially broad flat flame across the plate c so that the gas supply to the main burner may be shut off, the supplementary burner providing sufficient heat to keep the pan warm and serving to re-light the main burner. In the form shown, a casting a is formed with a chamber b and a mixing-tube e for the main burner and a chamber m and a mixing-tube n for the supplementary burner. The main burner is provided with a gas-tap g, a nippleregulator g<1>, and an air regulator disc k and the nipple o<1> of the supplementary burner is connected with a branch pipe o having a separate control tap p. To prevent extinguishing of the supplementary burner by backfiring of the main burner, the apertures g are formed in a downwardlv and backwardly enclosed face of the head m<1>, which face is set back from the oppositelyinclined front face of the chamber m. In modifications, the supplementary burner may be separate and attached, or fixed adjacent, to the main burner, and a two-way tap may be provided to pass gas to both burners or to the supplementary burner only.