baber/WOPTO huggingface dataset:
Patent GB-1057881-A (GB)
Title: Improvements in or relating to electric testing and measuring apparatus
Inventor: RICKARDS ARTHUR JOHN
IPC: H04N17/00
Filed: 1962-04-17
Abstract: 1,057,881. - Television; transistor pulse circuits. IRIS PRODUCTIONS Ltd. July 17, 1963 [April 17, 1962], No. 14886/62. Headings H3T and H4F. Television, Fig. 1.-Pulse-and-bar and staircase test signal waveforms from generators (not illustrated) appear at terminals 26 and 28 and are combined with a composite video signal which appears at terminal 10 by means of keyed switches 24, 25 which are operated during a selected line of each field blanking interval by key pulses from a generator 21, the switches also being controlled by a counter 15 so that one test signal appears during odd fields and the other during even fields. The whole operation is timed by the synchronizing signals forming part of the video signal which are separated in a stage 12 and applied to control counter 15 and blanking pulse generator 18 which triggers key pulse generator 21 via driver 19. The synchronizing and blanking pulses are also applied via terminals 14 and 22 to control the operation of the test signal generators. The key pulse generator (of which a detailed transistor circuit is disclosed, see below) is triggered by the rear edge of the blanking pulse from generator 18 which is adjusted by a " line select " control so as to select any desired line during the blanking interval for insertion of the test signals. Reference is made to the use of lines 13 and 215 of the British Standard television waveform. " Set lift " controls associated with keyed switches 24 and 25 permit adjustment of the test signal pedestals. Variable gain amplifiers 11, 30 and 31 permit individual adjustment of the amplitudes of the video and test signal components. Network 35 compensates for high-frequency loss in the preceding resistive mixing pad. The video signal may be by-passed around the apparatus by operation of contacts r 1  and r 2 . It is stated that an original video signal allready containing test signals may have further test signals added by appropriate control of generator 18. The key pulse is made available at terminal 36 to permit control of an oscilloscope for measurement of the test signals. Transistor pulse circuit, Fig. 2.-Blanking pulses (see above) are applied from terminal 40 via an emitter follower stage 51 to a differentiating circuit C1, R1 from which the positivegoing transients (corresponding t rear edges of the blanking pulses) are applied via diode 52 to cut off transistor 53 and develop negative output pulses. These pulses then trigger a monostable circuit 54, 55 having an adjustable trigger time determined by C3, R5, R6, the generated pulses appearing at terminal 23 via emitter follower stage 59. Diodes 56 and 57 protect the junctions of transistors 54, 55, whilst diode 58 and resistor R6 convert the shape of the trailing edge of the generated pulse. S10 and S11 are Zener diodes.
Patent GB-514972-A (GB)
Title: Improvements in or relating to alternating current voltage regulators
IPC: H01F29/12
Filed: 1938-05-19
Abstract: 514,972. Transformers, HINKSMAN, E. A., and GOLD, W. G. May 19, 1938, No. 15012. [Class 38 (ii)] A regulable transformer comprises a three limbed core 10 on which is mounted primary and secondary windings 7 and 14, one set of the windings being axially movable. As shown, the secondary windings 14 are attached to a plate 15 and are moved by means of a screw 18 operated from a handwheel 28. The cores are provided with magnetic members 8 and, if desired, additional members arranged adjacent to these and between the windings may be provided. The secondary windings may be connected to the primary windings to give either a buck or boost effect and the primary winding may be tapped. If desired the primary windings may be arranged external to the secondary windings.
Patent GB-336216-A (GB)
Title: Improvements in liquid circulating devices for absorption refrigerating apparatus
IPC: F25B33/00
Filed: 1929-04-05
Abstract: 336,216. Electrolux, Ltd., (Assignees of Paten-Munters Refrigerating System Aktiebolag.). April 12, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Divided on 309,545. Refrigerating, absorption machines for.-In a pumping system for absorption refrigerating apparatus operated solely by heat and including a heated vessel 5 where gas is evolved from a solution, a, rising pumping pipe 9 through which a mixture of gas and liquid is lifted, and a chamber where the gas and liquid mixture is separated, the liquid supply pipe 11 to the pumping chamber 5 opens into the chamber close to and beneath the level of the solution in chamber 5, the latter being above the heating surface of heating element 3. Thus if unintentional high pressures arise in chamber 5 the level of the solution therein will not be driven below the level of the heating surface and undesirable overheating of the vessel is prevented.
Patent GB-747498-A (GB)
Title: Improvements relating to the operation in the manufacture of footwear known as french binding
Inventor: REYNOLDS WILLIAM GEORGE
IPC: A43D47/00
Filed: 1953-05-30
Abstract: 747,498. Coating webs. LOTUS, Ltd. May 27, 1954, [May 30, 1953], No. 15115/53. Class 140. In the manufacture of footwear, adhesive is applied to the binding in French binding as it is being fed to the stitching machine preparatory to being stitched to the component to be bound. As shown in Fig. 1, binding tape 11 wound on a reel 16 rotatably supported laterally of an upright 13 is partly coated on one side with adhesive from a container 23 and passes over a roller 401 on a stitching-machine through a guide 103 and beneath a feed-wheel 104 of the stitching-machine. The adhesive is supplied by a pump piston 25 connected by a strap 26 and eccentric 212 on a shaft 21 driven by a motor 19. The piston operates in a cylinder 24 having apertures 241 through which adhesive is fed beneath the piston to a passage 301 in a block 30 screwed on to the cylinder. The passage has a manually actuated plug valve 31 to control the flow to a passage 302 leading to a trough below the tape. The tape passes beneath a pressureplate 361 urged to contact the tape by a spring 37 encircling a post on the plate and abutting the plate and a housing to which the post is secured. A finger lever 39 is mounted on the post for raising the plate to position the tape. The tape is positioned in a recess in the block and is guided by a recess in a plate 33 adjustably positioned on the block. A treadle control of the motor 19 operates the pump supplying adhesive first and then operates the stitching machine; increasing the rate of stitching increases the rate of pumping. The adhesive is heated by two cartridge electric heaters 28 in the base of the container and the temperature may be thermostatically controlled.
Patent GB-1041424-A (GB)
Title: Improvements in or relating to diagnostic x-ray units
Inventor: BRYER ROBERT FRANK
IPC: A61B6/10
Filed: 1964-04-13
Abstract: 1,041,424. Diagnosis X-ray apparatus. GENERAL ELECTRIC CO. Ltd. March 18, 1965 [April 13, 1964], No. 15160/64. Heading H5R. A palpator member is operated through hydraulic means by a control member remote from the palpator. The palpator pad 12 is of X-ray transparent plastics material and is mounted on an arm, comprising the spaced bars 30 (Figs. 3, 4, not shown). The arm is rotatable on a spindle 10 by which it is attached to the flanges 9 of a movable carriage 8. Coupled to the palpator arm is the outer end of a pistonrod 18, the piston 17 being mounted in an hydraulic cylinder 16 supported by the carriage 8. A spring 19 coupled through link 33 between the arm and carriage biases the piston inwards and maintains the arm in a horizontal rest position. The control unit 23 comprises a lever 26 (Fig. 2, not shown) connected to a cylinder 22, such that pressure on the liner is hydraulically transmitted via flexible piping 21 to cylinder 16, the piston forcing the arm 11 downwards against the action of spring 19, with a pressure corresponding to that applied to the lever. When the lever is released the action of the spring 19 causes the lever to return to its upper, rest position. The movement of the carriage 8 on pillars 4 is by means of a reversible electric motor 13, through a wormdrive 14. In practice, the carriage is lowered towards the patient by pressing on the control lever, a switch S 3  being actuated by this action to start the motor. The carriage moves downwards until the palpator pad contacts the patient, producing an upward pivoting of the arm and opening a microswitch S 4  which stops the motor. Palpation of the patient is carried out. The lever is then released and returns to its upper position where a switch S 1  is actuated to initiate upper movement of the carriage by the motor until opening of a switch S 2  on the carriage stops the carriage in its upper position. A switch S 5  at the lower end of the pillars 4 stops the motor if the carriage moves downwards in the absence of a patient. A gravity operated safety switch S 6  is provided on the arm to prevent starting of the motor when the arm is in its out-of-use position, i.e. flat against the pillar 4, the arm being swung down into this position after release of the ends of a pin 36 by which the link 33 is connected to the arm 11. The pillars 4 and table 1 are mounted on a supporting member 3 for rotation in a main support 41 which can be raised on guide 42. An image intensifier 7 located beneath the table may have a television link and is also mounted for rotation. A Buchy diaphragm or serial charger may be located beneath the table.
Patent GB-624071-A (GB)
Title: Improvements in or relating to dustless rock drills
IPC: E21B21/01
Filed: 1947-06-09
Abstract: 624,071. Percussive drills. INGERSOLLRAND CO. June 9, 1947, No. 15168. Convention date. Nov. 19. 1941. [Class 124] In a fluid actuated rock drill having means for maintaining sub-atmospheric pressure in a cavity in the casing by the introduction of a jet of pressure fluid into a passage connected with cavity by a conduit, the conduit is a tube co-axial with the cavity and extends to the rear end of the drill casing. As shown, a cavity 36 between a chuck nut 35 and a chuck bush 37 communicates  with a passage 63 in the head of a rock drill by a tube 35 coaxial with the cavity and which may surround a tube 46 for cleansing fluid. A passage 65 fitted with a needle-valve 67 and connected to a source of pressure fluid forms an ejector to maintain a sub-atmospheric pressure in the cavity 36. A washer 49 prevents leakage of cleansing fluid into the passage 63.
Patent GB-779009-A (GB)
Title: Process for producing water-insoluble azo-dyestuffs on the fibre
Filed: 1953-06-01
Abstract: Azoic dyeings are obtained by grounding the fibre with a solution containing an o-hydroxy-carboxylic acid arylide at a goods-to-liquor ratio longer than 1:2.5 and then developing with a bath containing a diazotized amino-azo-compound containing at least one nitro group together with acetic, formic, glycollic, propionic or other weak acid at a goods-to-liquor ratio longer than 1:2.5, the diazotized amino compound being used in a quantity approximately equal to the theoretical quantity required based on the weight of the arylide absorbed by the fibre.  The quantity of acetic acid employed is equivalent to 5.30 c.c. of 50 per cent acetic acid per litre of bath and other weak acids are employed in equimolecular quantities. Examples are given of the dyeing of cotton, and cuprammonium rayon. Specification 413,016 [Group IV] is referred to.
Patent GB-375955-A (GB)
Title: Improvements in conveyors for coal and the like material
IPC: B65G69/00
Filed: 1931-05-23
Abstract: 375,955. Endless chain conveyers. LEEK, A. E., Borsdane House, Hall Lane, Hindley, near Wigan. May 23, 1931, No. 15269. [Class 78 (i).] A conveyer for coal comprises parallel chains 5, 6 and cross-bars covered with short lengths of rubber tubing 11, 12. Trays 13 are mounted below the bars for collecting small pieces and dust. The bars may be replaced by strong wire spirals which may be provided with an internal core of rubber, or an external sleeve of rubber.
Patent GB-214493-A (GB)
Title: Improvements in or relating to the indicating mechanism of weighing apparatus
IPC: G01G1/00
Filed: 1923-06-12
Abstract: 214,493. Avery, Ltd., W. & T., and Sykes, C. M. June 12, 1923. Indicating - mechanism; pendulum-weight apparatus. -Relates to weighing- apparatus wherein the spindle of the indicating mechanism is mounted in bearings which fix its rotational axis, and comprises a duplex weight resistant mechanism supporting by means of oppositely-wound flexible ribbons a weight indicator which is cradled and rotated by the ribbons. The ribbons are initially tensioned to relieve the indicator bearings and are arranged to prevent torsional stresses in the spindle. A spindle. 6, Figs. 1 and 2, mounted in brackets 8 carries two discular indicating charts 5 one at each end. Oppositely wound ribbons 12 pass round drums 11 on the spindle 6 and are attached at their outer ends to segments 13 depending from a pendulous lever 14 pivoted on knife-edges 15. A second pendulous lever 22 is pivoted on knifeedges 25. The two levers 14, 22 are connected through rods 27 and lost motion links 31 to an intermediate lever 30 which is in turn connected through a draw rod 36 to the platform mechanism. Uniform motion of the rods 27 is ensured by the engagement of a projection 62 on one with a jawed projection 63 on the other. In a modification, Fig. 3, segments 46 project in an upward direction from pendulous levers 47, 64 and are connected by ribbons 12 to a drum 45 on an indicator spindle 43, two ribbons being attached to one segment and one ribbon centrally arranged with respect to the other two, to the other segment. The indications on the charts 5 may be viewed through a magnifying lens.
Patent GB-1142242-A (GB)
Title: Photographic apparatus
IPC: G03B27/62
Filed: 1966-04-06
Abstract: 1,142,242. Photographic printing apparatus. EASTMAN KODAK CO. April 6, 1966 [April 12, 1965], No.15323/66. Heading G2A. A photographic printer comprises film drive means for moving a film 16 through an exposure station including a mask, pointer means 28 alignable with a transverse edge of a frame image on the film prior to the exposure station, and a coupling between the pointer means and the film drive means for varying the length of film advanced by successive strokes of the drive means in accordance with the position of the pointer means. While one frame of the film 16 is being printed on to a paper web 31, the pointer 28 is aligned between the two succeeding frames 16', 16" by means of a knob (32) Fig. 1 (not shown), which rotates a gear (41) Fig. 3 (not shown), meshing with a rack (42) which carries the pointer (28). The rack (42) also rotates a second gear-wheel (44) to establish the initial position of a clutch face plate (36). Circuitry (14) (Fig.1) is then energized to advance the paper 3 a constant distance and to advance the film while the face plate (36) rotates from its variable initial position to a fixed end position, reaching which causes film advance to cease. The face plate is spring urged back to its initial position so as to be ready for re-setting for the next frame. The exposure station contains a light source 58, masks 60, 63, lens 62 and a shutter 59. The mask 60 is sized in accordance with the particular type of film, e.g. 620, being processed.
Patent GB-529152-A (GB)
Title: Improvements in or relating to radio aerial arrangements
IPC: H01Q9/40
Filed: 1939-05-23
Abstract: 529,152. Aerials. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. May 23, 1939, No. 15329. Convention date, May 24, 1938. [Class 40 (v)] In order to compensate for the small variation of impedance with frequency in a conical aerial suitable for wide frequency-band transmission or reception, the base of the aerial K is connected to a space capacity C through the resistances R which are equivalent to the characteristic impedance of the cone ; alternatively the capacity plate C may be within the cone the resistances R being arranged radially, Fig. 3 (not shown). In a modification the base of the cone may be earthed through resistances R, a counterpoise being fitted opposite the apex. The resistances R may be replaced by cylindrical or annular sheets of resistive material. The invention is applicable to two vertical cones arranged apex to apex, a capacity plate being connected to each cone or to the upper one only the lower one being earthed as above.
Patent GB-1493236-A (GB)
Title: Method of and a machine for machining curvilinear surface
IPC: B23C3/18
Filed: 1976-04-14
Abstract: 1493236 Milling curve surfaces OSOBOE KONSTRUKT BJURO STANKOSTROENIA 14 April 1976 15349/76 Heading B3K In a method of machining curvilinear surfaces such as the surfaces of propeller blades, a rotary cutting tool 2 and the workpiece (blade) 1 are moved relatively to one another along three rectilinear co-ordinate directions X, Y and Z and the cutting tool is simultaneously turned about two mutually perpendicular axes O 0 O 0  and O 1 O 1  whereby, the cutting tool 2, whose axis of rotation is inclined at a predetermined constant angle to one of the axes O 0 O 0  or O 1 O 1  traverses across the curved surface of the workpiece whilst continuously maintaining the correct cutting geometry, the turning of the cutting tool around one of said mutually perpendicular axes in course of machining, causing the axis of rotation of the tool to describe a conical path having a constant cone apex angle. In the machine tool described, the workpiece 1 is mounted on a work-table 4 which is displaceable in one of the rectangular co-ordinate directions X and the cutter head 14 with the rotary cutting tool 2 is mounted on a carrier 11 on a vertical slide 8 which is carried on a bridge type structure 6 on a cross slide 7 which provides movement of the head in the Y and Z directions. The carrier 11 is pivotable on the slide 8 about an axis O 1 O 1  and the cutter head 14 is pivotable in the carrier 11 about an axis O 0 O 0  which is at right angles to the axis O 1 O 1 , the axis O 1 O 1  being parallel to the direction X. The motions of the tool about the axes O 0 O and O 1 O 1  are effected through appropriate gear trains from independent motors 26 and 23 and the rotation of the cutting tool 2 in the head 14 is effected from a motor 19 via gears and a shaft 18 which extends through a hollow spindle 12 carrying the cutter head 14.
Patent GB-144648-A (GB)
Title: An improved process for the purification of crude anthracene
IPC: C07C7/148
Filed: 1920-06-07
Abstract: Crude anthracene is freed from carbazole by boiling with caustic potash in a neutral solvent, e.g. coal-tar naphtha, while distilling off the water formed.  The potassium-carbazole formed precipitates, and is removed and worked up to carbazole. Specification 7868/99 is referred to.
Patent GB-1148998-A (GB)
Title: Lead-containing stabilizers for polymers
IPC: C08K5/098
Filed: 1968-03-29
Abstract: 1,148,998. PVC stabilizers. MELLEBEZONS. 29 March, 1968 [27 April, 1967], No. 15382/68. Heading C3P. A stabilizer composition for PVC comprises a solution of a basic lead salt of the formula (RCOO) 2 Pb.nPbO, in which R is a branched chain C 7 -C 12  alkyl and n is 0À5-2, in a hydrocarbon solvent boiling in the range 100-180 C. or a carboxylic plasticizer ester, e.g. white spirit, a dialkyl phthalate or 2-ethylhexyl epoxystearate. There may also be added a 2-alkoxyethanol, a 2-alkoxypropanol or dipropylene glycol, a chelating agent, e.g. a phosphite ester, and a phenolic antioxidant. The compositions are added to plasticized PVC.
Patent GB-154217-A (GB)
Abstract: 154,217. Pineschi, A., and Pineschi, L. Nov. 25, 1919, [Convention date]. Void [Published under Se.ct. 91 of the Act]. Receivers; mouthpieces.-A gramophone having two records may speak into a doublemouthed telephone transmitter. A loudspeaking receiving apparatus of known type is shown in Fig. 1, where the sound-emitting diaphragm 3 is connected bv a wire 4 to a segment 9 which frictionally engages a rotating amber roller 5 driven by clock-work. This segment is connected by linkwork with a point 18 which in known apparatus carries a stylus, but in the present case is joined by a rod 19 to the diaphragm of the loudspeaking receiver 1. The link-work is pivoted at 12 on an elastic arm 13 provided with an adjustable counter-weight 16 by which the sensibility of the apparatus can be varied.
Patent GB-224574-A (GB)
Title: Improvements in or relating to wireless signalling systems
IPC: H04L27/04
Filed: 1923-06-14
Abstract: 224,574. Wells, R. I., Crowther, H. L., and Hecht, N. F. S. June 14, 1923. Thermionic modulating systems and apparatus. -Relates to thermionic vaive transmitters of the kind in which keying is effective through an auxiliary valve arranged as a grid leak to the main valve, and consists in arrangements whereby the grid potential for the auxiliary valve is applied directly from a source of alternating current (which may be the main valve itself), the necessary rectification being effected solely by the auxiliary valve. The key is inserted between the grid and filament of the latter valve. (1) Thus the main or power valve 3, Fig. 1, energizing the aerial 5, may have in its grid circuit the filament plate space of the auxiliary or grid leak valve 8 in shunt with a condenser 7, alternating potential being supplied to the grid of the grid leak valve by a transformer 9 in series with a condenser 10. The rectifying action of the valve 8 establishes a blocking charge on the grid of the main valve, and this is discharged, permitting transmission to take place, when the key 12 is depressed. In further examples : (2) the parts 9, 10 may be omitted, the oscillations of the main valve establishing the necessary blocking charge. This, however, gradually leaks away owing to imperfect insulation, so that intermittent groups of oscillations occur. (3) To prevent these the condenser 10 of Fig. 1 may be retained, the transformer 9 being dispensed with or replaced by a simple choke coil. (4) To make the charging of the main grid more definite, in the arrangement of Fig. 1, the transformer mav be replaced by a coil shunted by a condenser and coupled directly to the aerial. (5) Where the grid current of the main valve is large, the key 12, Fig. 6, shunted or not by condenser 10 and choke 13, may be connected between the grid and plate of the grid leak valve. In this case a grid leak resistance 16 with shunt condenser 15 is added.