baber/WOPTO huggingface dataset:
Patent GB-1029383-A (GB)
Title: Hydraulic tool
IPC: H01R43/042
Filed: 1964-05-29
Abstract: 1,029,383. Jointing by stamping; welding by pressure. H. J. MANSELL. May 29, 1964 [May 31, 1963], No. 22330/64. Headings B3Q and B3R. A portable, hand-operated tool for joining or cutting electrical conductors, compressing terminals on conductors &c., comprises a jaw 11 movable by hydraulic means 72, 73, 120, force transmitting means 130, 131 between the hydraulic means and the jaw, cams 35, 36 operating the hydraulic means, and a handle 40 for turning the cams. The handle 40, through a lever 48 and a link 50, oscillates a plate 53 fixed to a member 18, Fig. 6 (not shown), rotatable on a cam carrier 28. A spring- pressed tooth 33 on the carrier 28 engages pockets in the member 18, clutching the carrier and member 18 together in one direction of rotation. During return oscillations of member 18, the carrier is held by engagement between a spring-pressed ball 58 cattied by the cam 35, and one of several spaced lugs 55. There are three cams 35, 36, 99 on the carrier 28, two (35, 36) for operating simultaneously pump-pistons 74, 74a, Fig. 12 (not shown), and one for operating a spring-returned valve 93. Fluid from the pumps passes along conduits 150, 151, Fig. 13 (not shown), to the valve 93, which directs it, through a port 148 and a conduit 154 with a non-return valve 156, beneath the piston 120, Fig. 5 (not shown). This piston moves the jaw 11 by straightening a toggle linkage 130, 131 against the influence of a return spring 146. One of the links bears in a slide 67 which may be moved away from the other link 130 by rotating the handle 62, the screw-threaded end of which has a shoulder 65 engaging the slide, thus adjusting the links into a straighter condition and increasing the jaw-force. Towards the end of the valve cam's rotation, the rise 99b (Fig. 12) from the dwell 99a shifts the valve 93 (Fig. 13) until it uncovers the port 153. Ports 148, 152 remain open and port 163 closed, so that fluid from the pumps passes, through the port 153 and conduits 167-169, back to the pumps to enter the spaces behind the pumppistons. The non-return valve 156 prevents escape of fluid from behind piston 120. As the pump-pistons pass off the ends of the cams 35, 36, the valve 93 is again re-set by a rise 99d on cam 99. This uncovers port 163 and interconnects the conduits 149, 162 for return to the pumps of the fluid behind the piston 120. At the end of the adjustment of slide 67, Fig. 8 (not shown), a plunger 111 enters a pocket in the slide, permitting movement of a valve 103 by its spring 108. This closes the port 164 (Fig. 13), so that pressure increases behind the piston J20 until the pump-pistons reach the end of their stroke. The valve 93 may be re-set manually by a ring 102 to release the pressure.
Patent GB-686300-A (GB)
Title: Attachment to disinfect the mouthpiece of telephone receiver
IPC: H04M1/17
Filed: 1951-09-25
Abstract: 686,300. Sanitary and hygienic devices. SIMS, C. R. Oct. 22, 1951 [Sept. 25, 1951], No. 22369/51. Drawings to Specification. Class 40 (iv). An attachment for disinfecting the mouthpiece of a telephone comprises a sterilized pad fitted into a box container, the whole being attached to the base of a telephone set by means of a spring or by rivets and the like so that when the receiver is in the rest position the mouthpiece comes into contact with the sterilized pad so receiving the fumes of disinfectant with which the pad has been impregnated. Alternatively the box container may be formed integrally with the base of the set.
Patent GB-755072-A (GB)
Title: Improvements in or relating to direct-voltage electronic amplifiers
IPC: H03F3/36
Filed: 1954-08-03
Abstract: 755,072. Valve amplifying circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Aug. 3, 1954 [Aug. 5, 1956], No. 22496/54. Class 40 (6). The first stage of a direct-coupled D.C. amplifier comprises a valve with four or more grids, the signal input being applied to the third grid 6. A resistor 11 is provided in the cathode circuit, the first grid 4 is given a constant biasing potential, and the second and fourth grids are coupled together by means of a common H.T. feed resistor 10. According to the invention, in such a circuit the cathode resistor 11 and the coupling provided by the resistor 10 are so proportioned as to suppress microphony and any effects due to variation in cathode emission, and in addition give an increase in effective slope between the third grid and anode. The arrangement is shown as applied to a push-pull amplifier, the first stage of which comprises a pair of triode-heptodes, the triode portions of which are utilized for balancing the input stage: the triode portions have cathodes in common with the corresponding heptodes and obtain grid bias via individual resistors 29 and a bridging potentiometer 28, by which the currents can be balanced. The heptodes are direct-coupled to pentode amplifiers 16 which are in turn direct coupled to cathode-follower output valves 20. Overall negative feedback is applied from the cathodes of the output valves 20 to the first grid 4 in each corresponding input heptode, the . degree of feedback being adjusted by means of shunt resistor 26, while the balance is adjusted by means of a balanced T-network comprising resistors 22, 23 and a potentiometer 24 with its slider connected to earth. In a modification, Fig 2 (not shown), the fourth grid of the heptode is coupled via a resistor to the second grid, to which the series H.T. feed resistor is connected.
Patent GB-650638-A (GB)
Title: Improvements in machines for bending tubes or the like elements
IPC: B21D7/024
Filed: 1948-08-27
Abstract: 650,638. Angular bending. BABCOCK & WILCOX, Ltd., JARMAN, D. L., and ADAMSON, P. Aug. 27, 1948, No. 22616. [Class 83 (iv)] In a machine for bending tubes &c. the tube is clamped by a screw actuated pad 119 to a grooved former 91 rotated through non- reversible worm gearing rotated by a capstan applied to a shaft 143. Spur gearing between the shaft 143 and a second capstan shaft is fitted to increase the mechanical advantage. The reaction member 241 may be inserted three alternative holes in a cover-plate 37. The gear casing 33 is adjustably clamped by a bolt 21 to a pillar 5 welded to feet 2. The casing is of welded construction. Markings on the cover indicate the angle of rotation of the former.
Patent GB-832226-A (GB)
Title: Halogenated bicyclo-[2:2:1]-heptenes and a process for their manufacture
IPC: C07C23/30
Filed: 1956-07-20
Abstract: The invention comprises compounds of the general formula <FORM:0832226/IV (b)/1> wherein X represents a hydrogen or a halogen atom (at least 4 halogen atoms being present), Y represents a halogen atom and the portion of the molecule indicated by <FORM:0832226/IV (b)/2> is derived from a cis-1 : 4-dihalogenobutene-(2), and the preparation thereof by reacting a cis-1 : 4-dihalogenobutene-(2) with a halogenated cyclopentadiene at an elevated temperature and if necessary, under pressure.  Specification 614,931 is referred to.ALSO:Insectidical compositions comprise an inert carrier and compounds of the general formula <FORM:0832226/VI/1> wherein X represents an hydrogen or halogen atom (there being at least 4 carbon atoms present); Y an halogen atom and the portion of the molecule represented by <FORM:0832226/VI/2> is derived from cis-1 : 4-dihalogen-butene-(2).  Compositions, which may contain other known insecticides, include an emulsion concentrate, a dusting powder and an acetone solution containing 5 : 6 - bis - (chloromethyl) - 1 : 2 : 3 : 4 : 7 : 7 - hexachlorobicyclo - [2 : 2 : 1]-heptene-(2). Specification 614,931 is referred to.
Patent GB-684236-A (GB)
Title: Improvements in or relating to ratchet-operated rotary mechanism
IPC: F16H31/00
Filed: 1949-08-31
Abstract: 684,236. Controllers. GENERAL ELECTRIC CO., Ltd., and JENKINS, G. H. Aug. 31, 1950 [Aug. 31, 1949], No. 22628/49. Class 38 (iii) [Also in Group XXIV] A shaft 10 cam operated contractor starter for an electric motor is adapted to be rotated step-by-step through a pawl 31, Fig. 3, co-operating with a ratchet wheel 30 on the shaft, the pawl being oscillated by the armature 12 of a solenoid on successive energizaions, and de-energization thereof. The pawl 31 is carried on a link 33 pivoted to an arm 35 of the armature, which is pivoted at 22, and is urged by springs (not shown) into engagement with the wheel 30. Positioning means to locate the shaft in each position are provided comprising a roller 42 on a lever 43 co-operating with recesses 41 in a disc 40 on the shaft 10. The lever 43 is pivoted at 44 and normally centralized by springs 51, 52 on a plunger 48 acting on an arm 47 so that the roller 42 lies partly within one of the recesses 41 of the disc 40. On energization of the solenoid its armature 12 is actuated to move the ratchet wheel 30 and shaft 10 by means of the pawl 31, the roller 42 being moved out of its recess by the engagement of the edge thereof by the periphery of the disc 40. Towards the end of the stroke of the armature and ratchet pawl a tappet 50 on the armature engages the plunger 48 and compresses the spring 51 to force the roller 42 against the periphery of the disc until it drops into the next recess of the disc to positively locate it. The solenoid is de-energized towards the end of the closing movement of the armature by the opening of a switch 60, 62, Fig. 4, through the movement of a lever 64 operated by a rod 70 secured to an arm 68 attached to the armature. The closing of the switch 60, 62 for the re-energization of the solenoid for the next actuation of the ratchet mechanism is controlled by a clock timing device 88 operating a trip lever 78. This timing device is set at the end of an operation by one of a number of adjustable pins 81 on the disc 40 engaging an arm 82 of a lever 83, 85 which moves a plunger 87 of the device. This plunger also carries a pin 86 which co-operates with a slot 89 in the trip lever 78 so that on the timing device being set the lever 78 is allowed to fall to engage a pin 76 of a toggle 71 to hold the solenoid contacts 60, 62 open. The plunger 87 then moves under time control until after a desired delay the pin 86 trips the lever 78 to allow the switch 60, 62 to close and energize the solenoid for another operation. Thus after an initial energization of the solenoid the mechanism continues a step-by-step operation automatically until the circuit is broken by a switch controlled if desired by the mechanism itself. Specification 684,238, [Group XXIV], is referred to.
Patent GB-279218-A (GB)
Title: An improved bumper or buffer for automobiles and the like
IPC: B60R19/28
Filed: 1926-09-14
Abstract: 279,218. Kaufmann, C. F. L., and Kaufmann, W. L. Sept. 14, 1926. Collision-guards. - The central portion of a resilient bumper for a motor-vehicle is rendered rigid while leaving the end portions flexible by attaching thereto at points spaced apart a flat bar 15 having its flat faces in an horizontal plane. In the construction shown the bumper comprises two spaced parallel spring bars 2, 3, while the bar 15 is twisted at the ends of the flat horizontal portion and extended to form spring loops 16, 17 which are attached to a rear bar 26 supported by two-part clamps 22, 25 on the vehicle chassis. The connection between the flat bar 15 and the bumper bars 2, 3 is effected by clamps 10, 11 connected by screws 12. Rubber buffers 29 may be mounted on the clamp parts 25 and extend into or almost into contact with the rear portions 12<1> of the clamp parts 11 so as to assist in absorbing impact shocks. Wheels or discs 7 are preferably mounted on the ends of the bumper to prevent it from being caught upon obstructions.
Patent GB-243124-A (GB)
Title: Glass panels for use in and upon wireless cabinets
IPC: H04B1/08
Filed: 1924-09-27
Abstract: 243,124. Rhodes, H. Sept. 27, 1924. Receiving sets, construction of; transmitting apparatus.-The panel on which wireless apparatus is mounted is formed of glass which is moulded with holes arranged as required for mounting the components. The par.els may be of clear or coloured glass and may be decorated by frosting, sandblasting, painting or embossing. Similar panels may be moulded with holes to accommodate valve-legs for mounting thermionic valves.
Patent GB-1439313-A (GB)
Title: Magnetic recording tape carrying a particular recording format
IPC: G11B5/027
Filed: 1973-08-24
Abstract: 1439313 Video tape recording INTERNATIONAL VIDEO CORP 24 Aug 1973 [1 Sept 1972] 22830/75 Divided out of 1439311 Heading G5R A magnetic tape is recorded to have a format consisting of audio tracks 404, 408, 412, a control track 422, an address code track 425, video tracks 416 and guard bands 402, 406, 410, 414, 418, 420, 424, 426 arranged substantially in the manner shown in Fig. 1 and preferably having the dimensions shown therein. The tape may be recorded and replayed by the apparatus and processes disclosed in Specification 1,439,311 and 1,439,312.
Patent GB-480332-A (GB)
Title: Improvements in or relating to thermally actuated spinners, motors and the like for imitation fires and other purposes
IPC: A63J5/02
Filed: 1936-08-19
Abstract: 480,332. Pivot bearings. PREMIER ELECTRIC HEATERS, Ltd., COLLINS, G. H., and NEWTON, A. E. Aug. 19, 1936, No. 22845. [Class 12 (i)] In a thermally actuated motor of the kind comprising a body 10 adapted to be rotated by heated air currents and a supporting bearing, at least one of the bearing members is formed bv allowing the material forming the bearing surface, when in a melted state, to solidify freely with the surface which is to form the bearing surface out of contact during solidification with any solid body. As shown, the motor 10 carries vanes 11 and a cup-shaped bearing member 13. The latter has a glass bearing surface 17 formed by melting a piece of glass in the cup and allowing it to cool. The supporting pivot 14 is also of glass, the bearing surface being formed by fusing the end 20 thereof. Alternatively, a pointed metal pivot may have a blob of glass on its end. In a modification, the pivot 14 consists of an adjustable screw carrying a glass bearing member of conical shape. In another modification, the pivot 14 consists of a metal rod pointed at both ends so that it can be reversed when worn. Specifications 404,302 and 469,934, [both in Group XI], are referred to.
Patent GB-586783-A (GB)
Title: Improvements in d.c. amplifiers
IPC: H03F3/36
Filed: 1944-11-17
Abstract: 586,783. Valve amplifying circuits. FLOWERS, T. H., and CHANDLER, W. W. Nov. 17, 1944, No. 22913. [Class 40 (v)] A D.C. amplifier is provided with a valve having a high A.C. resistance in order to maintain the voltage drop across the coupling resistor substantially constant. The Figure shows a two-stage amplifier in which the current through the coupling resistor 31'is maintained constant by providing a pentode valve 3, in series with it. Suitable electrode potentials for the valves are obtained from tappings on the H.T. source, these being so adjusted, that when there is zero input the output lead L2 is at earth potential. In a modification screen of valve 3 may be supplied from the full H.T. positive through a voltage-dropping resistance, the cathode resistor of valve 3 may also be omitted.
Patent GB-203879-A (GB)
Title: Improvements in roller boxes
IPC: B65H16/06
Filed: 1922-08-24
Abstract: 203,879. Milnes, G. Aug. 24, 1922. Roll holders. - In boxes for holding rolls of velvet &c., the roller ends are supported in circular seatings a in brackets A of wood or other material, secured to the box ends. Each bracket A comprises long and short arms or cheeks a', a<2>, a preferably triangular locking member D with an arm d being pivoted on a bifurcated rivet &c. c above the short cheek a<2>. The roller B is retained in the seating by engagement of the arm d with a notch or recess a' in the longer cheek a' of the bracket, the end a<4> of the cheek being inclined to facilitate engagement. The underside of the arm d may be bevelled or cut away.
Patent GB-758092-A (GB)
Title: Improvements in and relating to bases for electric lamps or similar devices
IPC: H01J5/52
Filed: 1953-08-20
Abstract: 758,092. Lamp caps. BRITISH THOMSONHOUSTON CO., Ltd. Aug. 20, 1953 [Aug. 20, 1962], No. 23009/53. Class 38 (1). A cap for a lamp 1 of the type having a reentrant stem 2 into which extend lead-in wires 4, 5 from the interior of the envelope, comprises a shell 14 in the base 19 of which pins 16, 17 are mounted, each pin being riveted over one arm of an L- shaped contact piece 22. The upright arms 25 of the contacts 22 are arcuate shaped and enter the stem 2 when the cap is placed on the lamp and press the wires 4, 3 outwardly against the wall of the stem thereby locating them and making electrical connection therewith. The cap is secured by cement 15.
Patent GB-763655-A (GB)
Title: Improvements relating to bakery equipment
IPC: A21B3/13
Filed: 1954-08-07
Abstract: 763,655. Erecting collapsible containers; packaging. MASSEY, O. July 25, 1955 [Aug. 7, 1954], No. 23022/54. Classes 18 and 94(1). A device for erecting rectangular containers having all sides hinged to the bottom and used in baking comprises a base 1 having hingedly mounted on it bell crank levers, the arms 3 of which are depressed to cause the other arms 4 to swing the container sides into erect position. The levers may be spring loaded, Fig. 1, and depressed by the weight of the container and its contents, or a container supporting plate 10 may rest on the arms 3 and be pulled downwardly by a treadle 13 against a spring 16, Fig. 6. In a further arrangement, Fig. 5 (not shown) spring pressed plungers support a plate such as 10 which is depressed as in the arrangement of Fig. 1. In baking, a liner is placed in the container prior to erecting the sides and dough placed on the liner, which is then folded over the dough by hand. The erected sides are held together by a lid.
Patent GB-388320-A (GB)
Title: Improvements in display apparatus
IPC: G09F11/12
Filed: 1932-08-17
Abstract: 388,320. Changing signs. LEYFIELD, A. M., 30, Craven Street, Strand, London. Aug. 17, 1932, No. 23040. [Class 3(i).] Photographs &c. are held in frames suspended from pins 12 disposed around two endless chains 2 passing over rollers 4, 6, 7, 8, the frames being brought in turn behind a window continuously illuminated by a lamp 23. The chains 2 are driven by a motor 16 through chain gearing 15. The motor is stopped when each frame reaches the window by pins 17, 18 on the chain 15 engaging pivoted switch arms 27, 31 in succession. The contacts 25, 29 are in electrical connection, as are also the contacts 26, 30. Breaking of the contacts 25, 26 does not stop the motor as contacts 29, 30 are still closed, but when the arm 31 is tilted the motor stops till the return of the arm 27, which is delayed by a dashpot &c. 33.
Patent GB-240995-A (GB)
Title: Improvements in hubs for the wheels of children's cycles, cycles, side cars or the like
IPC: B60B27/02
Filed: 1924-10-01
Abstract: 240,995. Radnall, E. A. Oct. 1, 1924. Hubs.-A wheel hub comprises a pair of discs 3, 4 connected by a tubular barrel 1 having a pair of lugs 2 at each end adapted to engage slots 7 leading out of the hole 5 through which the axle or central bolt passes. The discs may be machined from the solid to receive sprocket-wheels, or may be shaped to overhang the ends of the barrel and form ballraces.
Patent GB-767568-A (GB)
Title: Improvements in or relating to communication systems
Inventor: BROCKBANK ROBERT ALSTON
IPC: H04B17/40
Filed: 1953-08-21
Abstract: 767,568. Unattended repeaters. POSTMASTER GENERAL. Oct. 6, 1954 [Aug. 21, 1953], No. 23154/53. Class 40 (4). In a communication system comprising terminal stations and intermediate repeaters, the output power at which overloading of a repeater occurs is reduced by the reception at a repeater of a test current appropriate to that repeater and different in frequency from test currents for the other repeaters, and means are provided for measuring the response when a test current is applied. A two-wire system, Fig. 2, in which one band of frequencies is used for transmission from A-B and a higher band is used for the reverse direction has an oscillator O for producing test currents, and the frequencies of the currents are chosen so that a predetermined harmonic resulting from the overloading lies within the band for transmission from B-A. The returned harmonics are measured on a meter M. The amplitude of the currents of fundamental frequency may alternatively be measured at B. Facilities may be provided additionally at station B for causing the repeaters to overload at an individual frequency in the high-frequency band and a further test current which is not one of the frequencies at which a repeater will overload may be transmitted to produce combination frequencies lying within the low-frequency band by intermodulation. The reduction of output power at which overloading occurs may be obtained by connecting a crystal X, Fig. 1, across the output of the repeater. At resonance the voltage from anode to cathode is rectified in a rectifier D and applied to the grid. The rectifier may be poled to drive the working point in either direction. An alternative arrangement in a feed-back amplifier is described with reference to Fig. 3 (not shown), and arrangements suitable for a transistor amplifier are described with reference to Fig. 4 (not shown). Reference has been directed by the Comptroller to Specification 656,188.