baber/WOPTO huggingface dataset:
Patent GB-1518604-A (GB)
Title: Radio direction-finding apparatus
IPC: G01S3/14
Filed: 1977-04-29
Abstract: 1518604 Radio direction finding DEFENCE SECRETARY OF STATE FOR 29 April 1977 [4 May 1976 (2)] 18051/76 and 18052/76 Heading H4D A radio direction finder comprises a pair of crossed loops A, B, Fig. 1, the outputs of which are combined in antiphase in a common amplification channel 7 via individual modulators 5, 6 wherein one output is variably attenuated so as to be increasing with time during a given period when the other output is synchronously variably attenuated so as to be decreasing with time. The combined output of the channel contains a zero cross-over, the timing of which within the period is indicative of the radio bearing. Referring to Figs. 5. 6 wherein four possible bearings are shown for orthogonally crossed loops, and modulator 5 increases its output during periods I and III and decreases during periods II and IV, whilst modulator 6 decreases during periods I and III and increases during periods II and IV (i.e. a phase reversal occurs at the end of period II), the outputs of modulators 5 and 6 for the four bearings are as shown at (a) and (b) respectively. (c) and (d) showing the combined outputs indicate that a zero crossing will be detected in period I for bearings # 1  and # 3  and in period II for bearings # 2  and # 4 . This 180‹ ambiguity is resolved using the output of an omnidirectional antenna C, made at 10 in phase with one of the possible phases of the combined output. The zero crossing detector 12 gives a pulse indicating by its polarity, the direction of the crossing. The transient producing phase reversal is avoided by amplitude modulating the loop signals by sine and -cosine signals respectively the loops being centre earth balanced. Using such modulation the position of the zero crossing, expressed as an angle is equal to the bearing.
Patent GB-375077-A (GB)
Title: Improvements in and relating to supporting bodies for pans
IPC: C21B3/10
Filed: 1931-06-22
Abstract: 375,077. Foundry ladles &c. and transporting-devices therefor. ZIMMERMANN & JANSEN GES., D³ren, and WILHELMI, A., 33, Am Grafenbusch, Oberhausen, both in Rhineland, Germany. June 22, 1931, No. 18063. [Class 82 (i).] A pan a such as a slag pan is supported in an open-work basket-like structure b comprising vertical longitudinal members c, connecting- rings d, a grate-like bottom e, pivots h, and adjustable wedges f. The uppermost ring d<3> of the basket engages under a bearing-ring i which is connected to the supporting ring n of the pan by bolts m surrounded by springs k.
Patent GB-219984-A (GB)
Title: Improvements in or relating to electric distribution systems
IPC: H02P9/18
Filed: 1924-07-29
Abstract: 219,984. Spigai, V. F. July 29, 1924. Systems depending on the use of two or more machines; regulation, automatic.-The powerfactor of alternating current circuits is controlled by two electrodynamometer elements acting in conjunction upon a two-position relay which determines the coupling of a constantly running motor to a reversible rheostat, whereby compensating variations are produced in the exciting winding of a synchronous motor or in the field of a Scherbins exciter or a Kapp vibrator. For a three-phase system each dynamometer element consists of two current-coils 10, 11, Fig. 1, adjustably positioned on opposite sides of a movable voltage coil 14. The two voltage coils are mounted on a spring controlled lever 20 and linked up to a lightly balanced relay contact member 26. The current coils are connected to series transformers T<1>, T<2>, Fig. 2, and the voltage coils to potential transformers TE<1>, TE<2>. A theoretical account of the working of the apparatus is given in the Specification. In a modi. fication, the regulation acts to include and exclude static condensers.
Patent GB-1068603-A (GB)
Title: Resuscitation apparatus
IPC: A61M16/12
Filed: 1964-05-01
Abstract: 1,068,603. Artificial respiration apparatus. C. T. CHRISTMAN. May 1, 1964 [May 1, 1963], No. 18275/64. Heading A5T. Apparatus for mouth-to-mouth artificial respiration in which oxygen at a preselected pressure is supplied to a breathing mask (19) worn by the operator and exhalations from the operator are supplied to the patient only when they are at a pressure exceeding the preselected pressure comprises a breathing mask (19) which is connected through a conduit (17) and an adjustable pressure regulator (15) to a compressed oxygen container (10), and the exhalation valve of the mask is connected by a conduit (21) and an oro-pharyngeal tube (23) to the patient. The exhalation valve comprises a seat 36 located in a partition 37 in one piece with the mask wall and a valve member 42 which is secured to a diaphragm 43 closing one side of a nipple 44. The nipple communicates through a bore 49 with an oxygen inlet passage 31 which is connected to the oxygen supply conduit (17) so that the valve member is subjected to a closing pressure equal to the pressure of oxygen supplied to the mask. The exhalations of the operator, which include carbon dioxide and water vapour added by his lungs, pass through the exhalation valve to the subject only when they are produced at a pressure exceeding that of the oxygen supplied. The pressure regulator (Fig. 5, not shown) comprises an inlet valve (65) which is opened by movement of a diaphragm (67) when the operator inhales. The position of the diaphragm is adjusted by rotation of a dial (64) linked through gears (68, 69, 71, 72) and a resilient arm (73) to the diaphragm. Adjustment of the diaphragm varies the amount by which the valve may be opened as the operator inhales, thus adjusting the pressure of oxygen flowing to the mask. The oro-pharyngeal tube is made of soft rubber and has an arcuate end portion (24), a lip guard (25) and a metal bite ring.
Patent GB-1423262-A (GB)
Title: Body implantable lead
IPC: A61N1/05
Filed: 1973-04-16
Abstract: 1423262 Electrodes MEDTRONIC Inc 16 April 1973 [17 April 1972] 18297/73 Heading A5R A flexible implantable electrical lead 30 comprises two biologically inert conductors 32, 52 encapsulated in a biologically inert insulator 34, the first conductor 32 having a portion which projects through the insulation 34 and is wrapped helically for at least one turn therearound and partially embedded therein to form one electrode, the second conductor 52 projecting through insulation 34 to form the other electrode. The insulation 34 may be silicone rubber and the conductors 32, 52 may be platinum or platinum-iridium alloy. An embedded coil spring 46 defines a lumen through which a stylet may be inserted to guide the lead 30 through a body vessel. In an alternative embodiment, the second conductor (72), Fig. 3, (not shown) and a third conductor (74) terminate in electrodes (86, 88) which may be wrapped around the nerves to be stimulated. In another embodiment, the second conductor (112), Fig. 4, (not shown) terminates in a spiral which is partially embedded in a substrate (118) of the insulator material.
Patent GB-577107-A (GB)
Title: Improvements in or relating to x-ray apparatus
IPC: G01N23/04
Filed: 1943-11-04
Abstract: 577,107. R÷ntgen-ray apparatus. STANDARD TELEPHONES & CABLES, Ltd., WHALLEY, I. H., BARNES, G. H., and SKELLERN, H. Nov. 4, 1943, No. 18304. [Class 98 (i)] X-ray equipment comprises a compartment totally enclosed with X-ray opaque material, a support for an X-ray sensitive plate or a fluorescent screen forming part of the wall of compartment, or X-ray tube within the compartment emitting X-rays towards the plate or screen, a platform for supporting an object under examination between the tube and the plate or screen, and means for varying independently of one another the distances of the tube and the platform from the plate or screen. As shown, the cabinet 11 comprises a lead-lined tube compartment 12 and a control compartment 13, the tube 14 carrying at one end a fan and motor 15 and at the other a counterweight 27 projecting rays upwardly through an examination platform 16 to a fluorescent screen which is covered by a thick lead glass sheet and a hinged cover 18. The tube 14 is carried on an arm 19 having rollers 20, 21 riding on the vertical rails 22 and having a chain 23 connected to the counterbalancing weight 26. The tube may be raised and lowered by means of the pinion 29 coaxial with the chain sprocket 25, which pinion 29 is operated by the small pinion 30 and an external handle. The platform 16, which may be a '' Bakelite " (Registered Trade Mark) sheet in a wooden frame, is raised and lowered by movement of the rollers 33 on bell-cranks 34 fixed on shafts 35, tension springs 41 extending between arms 42 on the shafts normally urging the platform 16 upwardly. One pair of bell-cranks 34 has the second arms pivoted to blocks engaging a rod 38 oppositely threaded at the two ends which is rotatable by an external handle to raise or lower the platform. Vertical guides 40 are provided for the platform. The hinged fluorescent screen and lead-glass cover is normally urged upwardly by strong helical springs. The fluorescent screen may-be raised and a cassette of the same dimensions substituted. Slots 44 may be provided for the insertion and ejection of sheets for inspection. Ventilating grills 45 are covered by lead-covered baffle boxes 46. The compartment 13 contains a transformer 47, a control box 48, and a relay 49, the electrical circuit being such that the fan 15 is switched on immediately power is supplied, the right-hand lamp 50 then lighting. Depression of a right-hand button energises the relay 49 to supply current to the transformer 47 and the left-hand lamp 52. Depression of the left-.' hand button opens the holding circuit of the relay 49 and switches off the tube. Switches are provided to open the relay circuit on opening either the door of the tube compartment or the fluorescent screen.
Patent GB-339956-A (GB)
Title: Improvements in handle sockets
IPC: B25G1/00
Filed: 1929-06-14
Abstract: 339,956. Smith, C. F. June 14, 1929. Toothed and like holding-devices for socket fixings.-A socket for fixing a handle to a brush &c. has a circumferential lip 12 and a longitudinal split 10 both providing sharp edges to bite into the handle, together with a transverse indentation 11. Dies may be. used to shape the socket, completely or in part, while in position.
Patent GB-569234-A (GB)
Title: Improvement in engine starter gearing
IPC: F02N15/06
Filed: 1943-11-05
Abstract: 569,234. Turning - gear. BENDIX AVIATION CORPORATION. Nov. 5, 1943, No. 18416. Convention date, Nov. 13, 1942. [Class 7 (v)] An engine starter drive comprises a powershaft 2 which may be an extension of a motor armature and carries a screw member 5, a slidable pinion 7 coacting with an engine gear 8, and a nut 9 connected to the pinion through yielding drive means, the nut and screw being connectable by a spring-urged latch 24 which disengages by centrifugal action when the starting motor attains a predetermined speed. The yielding drive comprises a deformable block 11 of rubber or the like, enclosed in a barrel 13 and bearing at one end against a nut flange 12 and at the other against a spring- urged clutch member 14 having teeth 16 engaging teeth on a member 18 fixed to pinion 7. A sleeve 23 protects the screw-threads from abraded rubber. In operation, when the power-shaft is rotated, the nut 9 and associated parts move along the shaft to engage the pinion with gear 8 and thrust ring 4. In this position, the latch engages a groove in the screw to lock the pinion and power is transmitted through the member 11 to the pinion to turn the engine. When the engine fires, the pinion overruns the drive which is resumed if the engine fails to start. When the engine starts, release of the load causes the starter motor to speed up so that latch 24 is centrifugally withdrawn. The frictional torque transmitted from the pinion 7 then moves back the nut and the parts resume the position shown in Fig. 1.
Patent GB-501884-A (GB)
Title: Improvements in or relating to gas-operated firearms
IPC: F41A5/26
Filed: 1938-06-21
Abstract: 501,884. Automatic guns. CESKOSLOVENSKA ZBROJOVKA AKCIOVA SPOLECNOST, BRNO. June 21, 1938, No. 18460. Convention date, June 21. 1937. [Class 92 (ii)] Relates to gas-operated guns of the kind in which a forwardly-directed gasexhaust port 11 in the gas cylinder 2 is obturated by a forward extension of the gas piston 5 at the end of the forward movement of the gas piston. According to the invention, a gas exhaust port of smaller diameter than the gas cylinder is formed in the front end wall of the cylinder and is obturated by a longitudinally projecting spigot 5<1> on the front of the gas piston. The spigot shown is of circular section and is coaxial with the gas cylinder. The exhaust port is formed in a removable bayonet-jointed member 10 which is provided with holes 9 of different sizes so that the gas action can be varied by rotating the member.
Patent GB-802837-A (GB)
Title: Improvements in or relating to blade wheels
IPC: F16H41/28
Filed: 1956-06-14
Abstract: 802,837. Making torque converter blading. FRANCAISE DU FERODO S.A. June 14, 1956 [June 14, 1955], No. 18484/56. Class 83(2). [Also in Group XXIX] A blade wheel, particularly for a torque converter, has blades 1 mounted on one or more casings 2, 3 by tenons 15 of rectangular crosssection on the blades passing into circular exscribing holes 14 in the casing. These holes may pass through the casing wall or they may be blind holes. The blades and casings are pressed out of sheet-metal, preferably steel. Locking tabs 8, 9 pass through slots 10, 11 in the casings 11, 12 and are then twisted or bent over. The locking tab and opening 8, 10 may be replaced by a further locating tenon 15, Fig. 3 (not shown). The assembled blade wheel is then furnace brazed using copper brazing metal, after which the protruding portion of the tongues may be machined off. The brazing closes any space between the tongues and their slots. In another embodiment for a pump impeller, Fig. 7, locating flanges 33 for the blades are formed by separate annular discs welded or soldered to the edges of casing; these discs are removed after the brazing operation. Alternatively locating flanges 32, Fig. 6 (not shown), may be formed integral with the casing. In another' embodiment, Fig. 8, the ends of the blades 25 have additional tenons 34 engaging in indents 35 of annular rings 36, 37 of angle cross-section, Fig. 11 attached to the casing 26. The rings may form part of a labyrinth packing when the blade wheel is assembled in the converter. Other similar embodiments are described for the pump impeller, Fig. 9 (not shown), and for the reaction blading, Figs. 15, 16 (not shown), of the converter.
Patent GB-888978-A (GB)
Title: Television standards conversion system
IPC: H04N7/01
Filed: 1960-05-25
Abstract: 888,978. Television. AMPEX CORPORATION. May 25, 1960 [June 8, 1959], No. 18545/60. Drawings to Specification. Class 40(3). In a television standards converter video signals (which may be derived from a magnetic record) having a first set of scanning standards are reproduced on a picture tube as a first display which is scanned by an intermediate television camera in lines perpendicular to those of the first display and the video signals so produced are passed through a filter to remove the "moire" pattern and then reproduced on a further picture as a second display 'which is then scanned by a further television camera operating according to the desired second standards. The "moire" pattern has a frequency (2F) equal to the rate of the transverse scanning of the lines of the first display and the filter characteristic is such that all frequencies slightly above F are suppressed. The frame scanning rate of the intermediate television camera may be that of the first or second scanning standards and the number of scanning lines is preferably greater than the number of half cycles displayed in a line of the original signal divided by the Kell factor.
Patent GB-1387613-A (GB)
Title: Bag making machine and method of making bags
IPC: B31B50/64
Filed: 1972-04-21
Abstract: 1387613 Bag making machine; seaming non- metallic sheet material H MEMBRINO 21 April 1972 [9 Dec 1971] 18614/72 Headings B5D and B5K A machine capable of making bags of different sizes from a tubular web or two opposed webs comprises an impression roller 36 driven through a drive including a change gear (26, Fig. 1), and a rotatable heat sealing and severing head 68 or cylinder having sealing and severing elements 96 and a drive which includes meshing elliptical gears 118, 120 and a bevel and pinion gear differential 126, 134, 132. To change over the machine to produce bags of a different size, after the change gear has been replaced, the angular position of the sealing and severing means relative to the radial positions of the elliptical gears 118, 120 is adjusted, while the machine is running, to match the speeds of the elements 96 and the impression roller 36 at the moments when they co-operate to seal and sever the web(s). This running adjustment is achieved by rotating a shaft on which a worm (142, Fig. 3) is mounted to mesh with a worm gear 130 on which the pinions 132 of the differential gear assembly are mounted. The speed of the impression roller can be varied, while the machine is running, through a second bevel and pinion gear differential 44, 46, (42, Fig. 1). This differential also includes a worm gear 40 on which the pinion gears (42) are mounted and which meshes with a worm (52, Fig. 1) rotatable either manual by a disc 60 or automatically by a motor (56, Fig. 1) whose operation is responsive to signals from a photo-electric device scanning the bag forming web(s). The sealing and severing head may comprise oppositely disposed blade portions 96 or a cylinder with spaced knife blades, ribbons or wires.
Patent GB-298288-A (GB)
Title: Improvements in machines for purifying cereal products
IPC: B02B1/02
Filed: 1927-07-14
Abstract: 298,288. Denham, H. J., and Simon, Ltd., H. July 14, 1927. Reciprocating sieves.-In machines for purifying cereal products of the type comprising a reciprocating silk sieve through which air is drawn, so that the lightest material is carried off by the air, the heaviest passes through the sieve and the intermediate travel over the sieve, the air trunks are arranged at the sides of the separating chamber so as to minimize the height and allow inspection. In the construction described, two separating chambers a, Fig. 2, which may be compartmented as described in Specification 269,272 are in communication with air trunks b at the sides thereof. The bottoms d of the air trunks may be reciprocated with the sieves e so as to deliver the material deposited thereon at the forward end of the machine. Glass inspection windows may be provided on the top of the separating chambers.
Patent GB-242350-A (GB)
Title: Improvements in and relating to receivers particularly of the loud speaking type
IPC: H04R11/00
Filed: 1924-08-06
Abstract: 242,350. Witt, S. E. Aug. 6, 1924. Magnetic instruments. - Relates to a loud-speaking telephone receiver similar to that described and claimed in Specification 242,351. In the present form the unit comprising the electromagnet 24, with an armature 30 connected to the diaphragm 13 and an adjustable spring 36 acting on the armature is mounted in a bridge-piece 16 and is adjustable by means of a rod 24<1> passing through the bridge 16. A mounting 26 carrying the unit is urged towards the diaphragm by a leaf spring 28. The core 24 forms a continuation of the rod 24<1> and a sleeve 27 is threaded round the rod 24<1>. The spring 36 is mounted in a block 37, Fig. 6, and is held therein by a screw 40 clamping the sides of the block, which is slotted at 39. The block 37 rests on a knife edge 41 and is adjusted by a screw 43 and nut 44. The spring 36 serves to flex the diaphragm so that all vibrations take place within the concave formed by the flexure, as in 242,351. The armature may be polarized, and is connected to the diaphragm so that an amplified movement is imparted thereto.
Patent GB-238691-A (GB)
Title: Improvements in apparatus for obtaining substantially steady heating effects from alternating-current for heating the cathodes of thermionic valves or for other purposes
IPC: H04B1/16
Filed: 1924-05-15
Abstract: 238,691. Brown, W. J., Robinson, E. Y., Churcher, B. A. G., and Metropolitan-Vickers Electrical Co., Ltd. May 15, 1924. Thermionic valve circuits. - Apparatus for supplying a current of substantially constant heating value, for example to the cathode 14 of a thermionic valve for connection in series with an alternating-current circuit, comprises a current-transformer 12, a resistance 15 having a positive temperature coefficient in series with the secondary 13 and with the cathode or other heating circuit, and a resistance 16 having a negative coefficient in parallel with the cathode. The core of the transformer may be unsaturated magnetically, but is preferably saturated at the desired output.
Patent GB-1358113-A (GB)
Title: Filter apparatus
IPC: H03H17/06
Filed: 1972-04-24
Abstract: 1358113 Active filters INTERNATIONAL BUSINESS MACHINES CORP 24 April 1972 [13 May 1971] 18861/72 Heading H3U A narrow band filter comprises: a broad band filter receiving an input signal sampled at a first rate; and means for sampling the output signal at a lower rate, 1/nth of the first sampling rate, and recirculating it through the filter to produce an effective bandwidth which is 1/n of that of the broadband filter. Input signals X sampled at a rate F are applied to a digital filter comprising delays T1, T2, a readout memory ROM and an accumulator ACCU. The output signal Y is delayed at D to avoid interference with the input X and fed to AND gate G 1 where it is sampled at a rate F/2. i.e., is divided by two. The resulting sampled signal is fed to delays T3, T4 which are arranged to recirculate alternate samples, thus giving a delay of 2T for each unit.
Patent GB-522243-A (GB)
Title: Fluid treating systems for instance tubulous steam and other vapour generators
IPC: F22B35/10
Filed: 1939-06-29
Abstract: 522,243. Fluid-actuated valves. BAILEY METERS & CONTROLS, Ltd. June 29, 1939, No. 18921. Convention date, July 2, 1938. [Class 135] [Also in Group XIII] In a boiler having a number of heated coils 6, 7, 8, Fig. 1, connected in parallel between a feed header 4 and a separating chamber 9, in place of resistors for maintaining the distribution of the water supply to the coils, valves 5 are employed which regulate by the pressure drop therethrough the supply to each coil in such a manner as to equalize the density of the water and vapour mixture leaving the tubes. Water flows from the header 4 by a pipe 11 to the inlet 12 of a coil 8 through a valve 17, Fig. 2, and water and steam from the outlet end 13 of the coil flows to the pipe 14 leading to the separator through a valve 20. The valve 20 is held on its seat by a spring 25 and the valve 17 is held against its seat by a push rod 23 between the valves. The areas of the openings of the valves and the pressure of the spring are so designed and adjusted as to give the desired density of mixture leaving the tube. The density of the mixture, that is, the quantity of excess water, is adjusted by a screw 26 compressing the spring. A change in the density of the mixture results in a variation in the pressure drop' across the valve 20 and a corresponding variation of the openings of both valves. Stop valves 15, 16, 27 are provided to render the equalizing valve inoperative. In modifications, the pressure drop across each of the valves acts upon a diaphragm secured to the valve spindle, and instead of passing through a valve 20, and the orifice at the entrance to the separator, the mixture of steam and water may pass through pressures on the opposite sides of the orifice being communicated through pipes to the opposite sides of a diaphragm on the spindle of the inlet valve.