baber/WOPTO huggingface dataset:
Patent GB-616874-A (GB)
Title: Improvements in or relating to optical apparatus for the projection of transparent documents
IPC: G03B21/11
Filed: 1946-03-15
Abstract: 616,874. Optical-projection apparatus. STANDARD TELEPHONES & CABLES, Ltd. March 15, 1946, No. 8189. Convention date, June 8, 1943. [Class 97 (i)] Transparent documents which may be in the form of kinematograph films are projected by an apparatus which comprises an apertured housing containing a stationary light source, and a unit, rotatable on the housing, which comprises a document carrier slidable at rightangles to the axis of rotation of the unit and an optical system, the axis of which coincides with the axis of rotation of the unit and passes through the housing aperture and the light source, comprising a condensing lens in or over the housing aperture and between the light source and the document carrier and a focusing lens on its side of the carrier and remote from the condensing lens. As shown in Fig. 4, a housing 23 is apertured at 39 and 41 and contains a lamp 36 carried on the housing by a socket 34 which is mounted for rotational and axial adjustment on a pin 33 and below which is disposed a reflector 35. Light from the lamp passes through a condenser 29 which is carried by a disc 25 rotatably mounted about the axis of the condenser in the grooves of four pulleys 26 on the housing 23. An arm 30 on the disc supports a lens 31 with its axis coinciding with that of the condenser 29, while a plate 27 is held on the disc with its centre line parallel to a diameter thereof. Slidable on this plate is a carriage 19 which may be located in any one position thereon by notches with which a spring catch co-operates. Grooves 17, 18 in the carriage 19 slidably accommodate a carrier for a film. This carrier comprises a centrally apertured platen 1, Fig. 3, supporting a frame 2 bearing a shaft 8 for a transparent plate 6 which in its closed position presses the film onto another transparent plate clamped on the platen 1, a catch 11 serving to keep the plates in their correct position; the rim 14 of the platen 1 is notched so that a spring latch on the carriage 19 may serve to hold the carrier in the desired position. A film holder for use with a roll film and slidable in carriage 19 is also described, the film holder comprising wind-off and take-up spools mounted on either side of two glass plates between which the film is threaded, spring pressure being applied to the upper plate. A mirror may be mounted above the lens 31 to reflect the light onto a screen, which may be formed within a hinged lid for the apparatus. In the Specification as open to inspection under Sect. 91 abutments are arranged to prevent the carrier from sliding off the carriage 19 and also to prevent the latter from sliding off the plate 27. This subject-matter does not appear in the Specification as accepted.
Patent GB-912384-A (GB)
Title: Method of and apparatus for annealing
IPC: C21D1/767
Filed: 1959-03-10
Abstract: 912,384. Annealing coiled strip in open form. WILSON, L. March 10, 1959 [May 7, 1958], No. 8193/59. Class 72. [Also in Group XII] In a process for annealing coils of strip in opened-lap form, by a hot gas, the coils of strip e.g. cold rolled steel are treated cyclically at a series of stations, by adding and removing coils at opposite ends of the series, heating to a predetermined temperature by forcing the gas vertically through the opened laps at an intermediate station, circulating gas in a closed path through one coil which has been heated and then one which has not, to cool the one and preheat the other, the coils being moved step-by-step whereby each is successively preheated, heated, soaked and cooled. As shown in plan, Fig. 2, rotary hearth H is supported by wheels on tracks between inner wall 2 and outer wall 1 of the furnace. The furnace space is divided into compartments by dividing walls 11-17 supported on the hearth. Open lapped coils are placed on a support unit S on carriage L which is run on rails 24 into purge chamber P closed by doors 20 and 22. The support unit is in the form of a grid having openings only below the open lapped coil, whereby the hot gas flows solely between the coil laps. An inert or deoxidizing gas is circulated through it to remove air and then door 20 opened to give access to station I on the hearth on to which it is lowered with support S by carriage L and hydraulic jack 55. The carriage is withdrawn, door 20 closed, and furnace gas circulated up through coil 66, driven through conduit 33 by a fan down through hot coil 65 at about 900 F., through passage 33 back to the bottom of coil 66 eventually equalizing the temperature of the two coils. After about 1 hour hearth H is rotated to bring each coil to the next station. Coil 67 at station II has gas circulated down through it, via passage 37, up through the coil at station VI and through a passage 36, while coil 68 at station II is heated by gas circulated by a fan up through the coil and back to an external heater A, where it contacts radiant tubes heated by gas or electricity, to bring it up to the annealing temperature of 1320 F. Coils 69 and 70 at stations IV and V are heated by the series circulation of gas up through coil 70 and down through coil 69 and back to a second external heater A1, thus providing a soaking time of 2 hours for which the coils are kept at the annealing temperature at these stations. Meanwhile coils 71 and 65 are cooled as described at stations VI and VII and coil 65 can then be unloaded by means of carriage L<SP>1</SP> which first moves it into the unloading chamber F through which cooled gas is circulated by fan 58, and then out of door 23. The finished coil is removed by hydraulic lifters 55. The hot gas passes upwards in one stage and downwards in the next to attain uniform heating of the coil. The stepby-step motion is achieved by an indexing control. The invention is equally applicable to a straight line or V-type furnace. Specifications 878,497 and 890,409 are referred to.
Patent GB-1487046-A (GB)
Title: Low voltage zener diode
IPC: H01L29/866
Filed: 1976-03-02
Abstract: 1487046 Semiconductor devices ITT INDUSTRIES Inc 2 March 1976 [10 March 1975] 08260/76 Heading H1K The upper electrode 40 of a Zener diode is applied only to a reletively deep diffused zone 32 of the same conductivity type as and adjoining the shallower zone 34 which defines the active PN junction of the diode. This reduces the risk of damage to the junction during the contacting process and makes it possible to encapsulate the diode in a double plug hermetically sealed glass or ceramic encased package. Conventional materials, doping levels, &c. are disclosed.
Patent GB-601714-A (GB)
Title: Improvements in or relating to apparatus for filling foundry core boxes
IPC: B22C15/24
Filed: 1946-03-18
Abstract: 601,714. Moulding-machines. SMITH & FAWCETT, Ltd., and GOSLING, E. B. March 18, 1946, No. 8266. [Class 83 (i)] An apparatus for filling core boxes comprises a receptacle 1 for the core sand from which the sand is ejected through a detachable nozzle 4 by means of compressed air admitted by a manually-operated valve 12 through an air inlet 3 and distributed by a perforated plate 11. The nozzle 4 is attached to the receptacle by a simple bayonet type joint and stepped for easy positioning over the aperture of the core box. A rubber or like sealing ring 9 may be placed over the step to assist in making a seal between the nozzle and the core box.
Patent GB-1429521-A (GB)
Title: Barrows
IPC: B62B1/18
Filed: 1973-02-20
Abstract: 1429521 Wheelbarrows B F DEACON 20 Feb 1974 [20 Feb 1973] 8311/73 Heading B7B The container 1 of a wheelbarrow for builder's plaster has a part-cylindrical wall 10 whose inwardly directed upper parts throw plaster on to a trowel which is drawn up the wall. The end walls 9 of the container may be vertical or inclined. The top edges of the container are strengthened by a flange 11. The barrow may have a removable lid which can be locked in place. A tool tray may be mounted between the handles 3 and/or on the lower frame 4. A board may be mounted on the top of the container to provide support for bags of materials being tipped into the container. The barrow frame may be made of steel tubing and the container of sheet steel or aluminium, galvanized metal, glass fibre reinforced plastics, polyvinylchloride, acrylic butadiene styrene, or rubber.
Patent GB-1530639-A (GB)
Title: Focussing of a radar receiver
IPC: G01S7/14
Filed: 1976-03-02
Abstract: 1530639 Radar; aerials HUGHES AIRCRAFT CO 2 March 1976 [24 March 1975] 08353/76 Headings H4D and H4A The radar system described in Specification No. 1,405,241 is modified to allow provision for improving the focus of the receiving antenna for targets at close ranges where the curvature of the incident wavefront cannot be neglected, by varying the frequency of the local oscillator in a predetermined manner, for a time, after transmission of a pulse, corresponding to a predetermined number of range bins as far as a maximum range for which focus compensation is provided and thereafter holding the L.O. frequency constant, the distribution of path lengths from the L.O. to the elements of the aerial array and hence the phasing of each element being arranged to follow a quadratic function. The phasing of the elements is approximated to the correct curve for an incident circular wavefront which is kt [1 - cos <SP>x</SP>/ KI ] where t is the time variable, x is the distance from the array centre and k is a constant, by using the first term x<SP>2</SP>/2kt, of the Taylor Series expansion of the aforementioned expression which latter term is a separable function and is constituted in the invention by varying the L.O. frequency as <SP>1</SP>/ l  and varying the phase distribution of the signals through the variously lengthed element feeds as the quadrattic function x<SP>2</SP>. Hence the phase distribution along the antenna elements varies parabolically to approximate a circle whereby the phase shifters along the array focus on a plane wave and, as the local oscillator frequency decreases as a function of '/, the array focuses on a steadily increasing range. In Fig. 13, a pulse 520 is transmitted and the receiver is activated, the L.O. frequency being f 2 , e.g. 1 microsecond later. The L.O. frequency then decreases as per curve 522 until it reaches a second frequency, which is then held constant for the rest of the range and corresponds to reception of a plane wave along the array until the time of maximum range. This process is then repeated at the system p.r.f. The phase distribution produced by the arrangement of the feed lines 159 in Fig. 3a, may be produced by having the branch points nonsymmetrically placed to provide the parabolic path length variation.
Patent GB-110720-A (GB)
Title: A New or Improved Apparatus for Producing a Suction or Pressure Effect.
IPC: F04B39/00
Filed: 1917-06-12
Abstract: 110,720. Aeronautical Instrument Co., and Brewer, G. June 12, 1917. Pumps and exhausters.-Two reservoirs 1, 2 are connected by a frame 3 and are pivoted eccentrically at 4 on a stand 5 so that either reservoir may be supported in the upper position through engagement with stops 7, 8. The reservoirs are provided with pipes 9, 10 extending from the inner surface of one to a point near the outer surface of the other and are fitted with cocks 11, 12. The reservoirs also have cocks 13 - - 16. By suitably turning the cocks a suction effect is obtained in the upper reservoir or a pressure effect in the lower reservoir which is made available through the cock 13 or the cock 16 respectively in the position shown in Fig. 3. By suitably changing the connexion and inverting the apparatus the effect may be continued.
Patent GB-526443-A (GB)
Title: Improvements in cupola furnaces
IPC: F27B1/16
Filed: 1939-03-16
Abstract: 526,443. Cupola furnaces. LONGDEN, E. March 16, 1939, No. 8403. [Class 51 (ii)] Hot gases containing carbon monoxide are supplied to the base of a cupola furnace Q from fireboxes S through conduit G, distributing conduit Hand tuyeres W. Blast supplied to a conduit C is heated by contact with the conduits G and H and enters the furnace through tuyeres E.
Patent GB-667740-A (GB)
Title: Improvements in or relating to the surface hardening of journals
IPC: C21D1/08
Filed: 1950-04-04
Abstract: 667,740. Surface hardening of metals. SPOJENE OCELARNY, NARODNI PODNIK. April 4, 1950, No. 8410/50. Class 72 In a device for hardening the surface of journals by flame hardening and quenching as the journal rotates, a cooled screen is provided in front of the burner in the direction of rotation of the journal to deflect the flame from the surface. As shown, a journal 1, rotating counter-clockwise, is heated by a flame from a burner 2, extending the length of the journal, and immediately quenched by a jet 3 of water. Mounted on an articulated arm 6 and held immediately in front of the burner and extending along the whole length of the journal, is a watercooled screen 4 which prevents the flame reaching that part of the journal first quenched when nearing completion of the hardening operation. An overflow 5 from the screen may be used to complete the quenching and keep the journal cool.
Patent GB-125382-A (GB)
Title: Improvements in or relating to Machines for Making Bobbins for Electric Batteries.
IPC: H01M4/10
Filed: 1919-04-03
Abstract: 125,382. National Carbon Co., (Assigness of Kipniss, A., and Neumann, M. P.). Oct. 1, 1917, [Convention date]. Feeding articles from hoppers and shoots.-A machine for the manufacture of bobbins for electric batteries comprises an intermittingly-rotating carrier 28, Fig. 1, furnished with moulds 35 which pass, in turn, beneath a hopper 32 containing depolarizing - material 33 and then beneath a compressing-plunger 43 furnished with an extension 53 to perforate the block for the reception of a carbon rod, a plunger 44, Fig. 4, adapted to force a carbon rod 59 into the perforation 55, a plunger 45, Fig. 8, adapted to compress the material about the rod, and a plunger 46 adapted to discharge the completed bobbin into one of a series of receptacles 85 attached to a chain 86, the plunger 43-46 being carried by a slide 47, Fig. 1, reciprocated by a rod 49 and crank 50 from the shaft 2. The carrier 28 rotates on ball bearings above a base-plate 31 and is operated from the shaft 2 through a crank 8, rod 9, crank and shaft 11, cam 12, lever 15, rod 18, Fig. 7, crank 19, spring pin 23, teeth 22, shaft 20, and bevel gears 26, 27, the movement of the carrier being limited by teeth 41 engaging the end 40 of a lever 38 which is deflected, when the carrier is to be rotated, by the lever 15 engaging an inclined portion 37. Movement is imparted to the chain 86, Fig. 1, from the slide 47 through a link 93 and ratchet mechanism 90, 92. The carbon rods are supplied from a hopper 62 to a shoot 61 and pass singly into a recess 58 in an arm 57, Figs. 1, 4, and 7, which is turned to bring a rod 59 into alinement with the plunger 44 by means of a shaft 56 and rack gear 70 operated from the arm 12 through a lever 75 and slide 67. An arm 71 carried by the slide 67 engages a rod 73 adapted to agitate the carbons in the hopper 62. The outlet from the shoot 61 is controlled by a gate 63, Fig. 8, actuated from the slide 67 through a lever 64. Arranged above the hopper 32, Fig. 1, is an auxiliary hopper 104, the outlet of which is controlled by a gate 108 operated through a lever 110 from a cam groove in a gear 114. The material is agitated in the hopper 32 by stirrers 100 carried by a screwed shaft 95 actuated by a nut 94 on the slide 47, and in the hopper 104 by stirrers 106 carried by a shaft 102 working through a fixed nut 103 and mounted in an arm 101 carried by the slide 47. The plungers 45, 46, Fig. 8, are recessed at 80, 84 respectively to accommodate the projecting portion of the carbon rod, the recess 80 being closed by a spring plate 81 adapted to force the carbon rod on to the base 31.
Patent GB-697529-A (GB)
Title: Improved electrically operated means for controlling the paying out and hauling in of a flexible line
Inventor: HOWARD RONALD LESLIE
IPC: B64D1/02
Filed: 1951-04-12
Abstract: 697,529. Control of motors. ROE & CO., Ltd., A. V. March 20, 1952 [April 12, 1951], No. 8498/51. Class 38 (iii) [Also in Groups XIX and XXX] A drum a is fixed to the internal structure of an aircraft and an arm d, which revolves below the drum, is driven by a reversible electric motor c through gearing housed within the drum. A tube f carries a static head g for measuring air pressure away from the disturbances caused by the aircraft and extends from a pivoted member h through a fairlead e on the end of the arm d and through a fixed fairlead q on the underside of the fuselage. The tube is connected to a pressure-measuring instrument by a hose j. When the arm d is revolved the tube is either wrapped around the drum or unwrapped therefrom so that the static head is either raised or lowered. The motor c has a starting switch, and a limit switch o for stopping the motor when the tube is fully wound is operated by engagement of plunger n with the static head. Another limit switch k which stops the motor when the tube is fully unwound is operated by the member h which is pulled by the pipe to engage a plunger m and open the switch k. A friction-reducing pulley p is mounted in the fairlead q. If the motor should fail to function a releasable clutch may allow the static lead to be lowered by gravity.
Patent GB-1389214-A (GB)
Title: Forming of materials
IPC: B21D22/20
Filed: 1971-04-02
Abstract: 1389214 Stamping NATIONAL RESEARCH DEVELOPMENT CORP 28 March 1972 [2 April 1971] 8513/71 Heading B3Q Apparatus for forming work into a diecavity comprises a blank holder, a ring surrounding and holding the die, and means attached to the ring for vibrating the ring and die in a radial resonant mode. A ring vibrator, Fig. 1, may be used which is driven by vibration units 6. A further form of ring vibrator (14), Fig. 2 (not shown), has radial slits (17), and vibration units (19). This form of vibrator 41, Fig. 4, is used as a holder for a die 40 and is supported on a ring 62 and on a central sleeve 68 which engages screwthreads in the vibrator 41 and has a collar 74 engaging a groove in the vibrator. Slits 77 are formed in the upper end of the sleeve and a base flange 69 is clamped to a ring 70 fixed to a support 64. A punch 42 for the die 40 is surrounded by a hold-down piston 53 in a cylinder 45. In another form using a vibrator similar to that in Fig. 1, the vibrators (26), Fig. 4 (not shown), vibrate the die-holder (23) or both the die-holder and the hold-down (30) in antiphase.
Patent GB-463513-A (GB)
Title: Automatic control mechanism for change-speed gearing for motor and the like vehicles
IPC: F16H61/02
Filed: 1936-03-23
Abstract: 463,513. Variable - speed gearing. MAILLEUX, A. L. March 23, 1936, Nos. 8582 and 8583. Convention dates, March 21, 1935 and Sept. 13, 1935. [Class 80 (ii)] A variable-speed gear automatically controlled in accordance with speed and load comprises a splined driving-shaft 1 carrying a number of worm-wheels 28, the threads of which co-operate with threads inside sleeve portions of clutch members 4. Pinions 5 of decreasing diameters are rotatably mounted upon each of the said sleeves and adapted to engage with the clutch members 4 under the pressure of springs 7 arranged between each clutch member 4 and the next pinion so that an equal engaging pressure is applied to all the clutches. The pinions are in constant mesh with pinions 15 mounted on a driven shaft 2, these pinions driving the shaft 2 through one-way devices 16. Carried'on the driving shaft 1 are centrifugal weights 24 which act upon a sleeve g to regulate the compression of the springs 7 according to the speed of the driving shaft. A further set of centrifugal weights 27 driven by gearing 17, 18 off the driven shaft 2 effect a further regulation of the springs 7 according to the speed of the shaft 2. The tendency of the load or resisting torque is to disengage the clutches 4, 5, owing to the action of the worm-wheels 28 on the clutch members 4, against the engaging pressure of the springs 7. Thus, if the torque is too great for the largest pinion 5, which gives the high-speed drive, the associated clutch slips and the next smaller pinion takes up the drive for a reduced speed or if the torque is still too great, the smallest pinion takes up the drive for low speed. When the torque decreases and /or when the speeds of the shafts 1 and 2 rise to increase the pressure of springs 7, the clutches of the higher speeds engage again and the lower speed pinions 15 freewheel on the shaft 2. Thus, the gear most suitable to the load and the speeds of the driving and driven shafts is automatically selected. Reverse gearing 19 is provided which is also adapted to give a neutral position. In a modification, a single centrifugal regulator only carried by the driving shaft is used so that the automatic selection depends upon the speed of the driving shaft only and the load. In this arrangement the driving and driven shafts are coaxial and the high-speed pinion 5 is directly connected to the driven shaft, the pinions 15 being mounted upon a countershaft.
Patent GB-541152-A (GB)
Title: Improvements in and relating to apparatus for cleaning gases
IPC: B01D47/08
Filed: 1940-05-13
Abstract: 541,152. Gas scrubbers. PEABODY ENGINEERING CORPORATION. May 13, 1940, Nos. 8606 and 8607. Convention dates, May 12, 1939, and Sept. 12, 1939. [Class 55 (ii)] Gas enters a primary cleaning zone 20 of the scrubber 10 through a tangential inlet 16, and is given a rotary motion by which the larger particles are thrown out and are discharged through a drain 12, the gas passing to a secondary cleaning zone 21 in which it is forced at high velocity through openings 23 in a plate 22, and is projected against baffles 26, water sprayed from rotating jets 56 below the plates being carried through the openings as shown in Fig. 4. Curved vanes 70 through which the gas then passes give it a rotary movement by which liquid particles are flung out against the walls 10 and 14, the liquid being drained off through a pipe 77. The spraying device is mounted in a cover 42 and may be removed as a unit through the opening 44. The effective area of the perforated plate 22 and the velocity of the gases through the perforations are controlled by a plate 62 supported in channels 63 and adapted to close off and cover a selected number of orifices 23. In modifications, the single perforated plate is replaced by separate plates arranged in an annular space and with separate sets of deflecting baffles over them. Angularly movable dampers may be used to replace the sliding damper above described. Specification 397,870 is referred to
Patent GB-774829-A (GB)
Title: Improvements in or relating to frames for supporting apparatus
IPC: H02B1/01
Filed: 1955-03-24
Abstract: 774,829. Nuts; clamp-fastenings. AKTIEBOLAGET SVENSKA METALLVERKEN. March 24, 1955 [March 24, 1954], No. 8611/55. Classes 44 and 89 (1). [Also in Groups XXII and XXXVII] A nut 4 for use in constructing a switchboardframe (see Group XXXVII) has at least two tapped holes 9 and is oblong so that it may be introduced through the slot formed between inturned margins of a channel-section member 1 and then turned through 90 degrees so that it abuts the inturned margins. The nut is biased into locking engagement with the margins by a spring 8, and two corners 10, Fig. 6, may be cut to a diameter corresponding to the inner width of member 1, the other corners being left square.