baber/WOPTO huggingface dataset:
Patent GB-776937-A (GB)
Title: Improved circuit arrangement for braking direct current motors
Inventor: MARTIN ERIC HARRY BURNAGE
IPC: H02P3/12
Filed: 1954-08-12
Abstract: 776,937. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd. July 22. 1955 [Aug. 12, 1954], No. 23464/54. Class 38(3)  A braking circuit for a direct-current series motor 1 comprises an auxiliary field winding 3 which is automatically connected to the armature of the motor so as to produce flux in the same direction as the main series field, winding 2 when the external supply to the motor is interrupted. During motoring operation, contacts 12c are closed and contacts 12a, 12b, are open so that, assuming contacts 4, 6, are closed for operation of the motor in one direction, relay coils 8<SP>1</SP>, 10<SP>1</SP>, are energized from the supply-lines to close contacts 8, 10. When the supply is interrupted the opening of the contacts 8, 10. is delayed sufficiently to allow the energization of coils 8<SP>1</SP>, 10<SP>1</SP>, to be transferred from the external supply to that due to the generated voltage of the armature, the circuit for the relay coils being completed through contacts 12b and 8a. Thus, the contacts 8, 10, remain closed and the winding 3 is energized through contact 12a so that the flux produced by the auxiliary field winding maintains the generated voltage, dynamic braking being established by connecting resistor 13 across the armature of the motor. If contacts 5, 7, are operated for reversing the motor, then the connections to the winding 3 are also reversed by closure of contacts 9, 11. In a modification the auxiliary field winding is seriesconnected.
Patent GB-1550330-A (GB)
Title: Process for producing prosthetic teeth and bones
IPC: A61K6/838
Filed: 1977-06-03
Abstract: Prosthetic teeth and bones having superior affinity for the living body and having a compression strength of about 4x10-3 kg/cm2 or higher and a flexural strength of about 2.7x103 kg/cm2 or higher, which comprise a composite material comprising (a) a sufficiently fine powder having an average particle size of about 2  mu m or less comprising at least 50% by weight of Ca10(PO4)6(OH)2 and not more than about 50% by weight of at least one additive selected from the group consisting of Ca3(PO4)2, AlPO4, Al2O3, AlF3, SiO2, Mg(PO4)2, and the fluorides, chlorides and oxides of Li, Na, K, Mg and Ca, and (b) at least one fibrous material having the coefficient of thermal expansion nearly equal to or slightly lower than that of the hydroxy-apatite selected from the group consisting of fibers, fine filaments and metal whiskers, ceramics or glass, said fibrous material being present at least 50  mu m inside the surface of the prosthetic teeth and bones, and said composite material being cold compression-molded and then sintered.
Patent GB-614874-A (GB)
Title: Improvements relating to electric storage batteries
IPC: H01M50/147
Filed: 1946-08-09
Abstract: 614,874. Batteries. CHLORIDE ELECTRICAL STORAGE CO., Ltd. (Riggs, H. C.). Aug. 9, 1946, No. 23640. [Class 53] The upper part of a storage battery container is formed with externally projecting chambers which are divided into compartments by horizontal partitions. As shown in Fig. 1, two partitions 32, 33 are provided in the right-hand chamber and one in the left. The compartments 35 are further subdivided by vertical partitions to form a number of smaller compartments corresponding to the number of cells in the battery, each of these compartments communicating through openings 41 with the corresponding cell. The plates of the battery occupy the lower part of the container so that when the battery is inverted the electrolyte flows into the upper part 12 and into the compartments 35. The space provided for the electrolyte by the compartments enables the height of the battery to be diminished. A filling opening 22 in each cell leads to two tubes 24, 25 which terminate near the surface of the electrolyte. The tube 25 allows gas to escape and is formed with a constriction 26 to prevent any liquid passing down it from blocking the tube. Both tubes 24, 25 lead to a tube 43 which communicates with the compartment 34 which is provided with a vent 47 at one end as shown in Fig. 5. The intercell connectors are located in the compartments 36 into which the cell terminals 17, 18 project, the battery terminals 54, Fig. 5, projecting from the ends of the battery. Fig. 7 shows a modification in which the external chambers are provided on a battery which is not intended to be inverted. Intercell connectors are located in the upper compartments 74, the lower compartments 75 communicating with the individual cells through openings 76. Each cell is provided with a filling opening closed by a plug 79 having a gas vent. The chambers in each type of battery serve to support the battery on a stand comprising rails 57 carried by a framework 56, as shown in Fig. 5. The battery shown is of the kind shown in Fig. 1, and when pushed to its full extent along the rails causes the gas vent 47 to engage a socket 66 leading to a vent tube 63. The terminal 54 engages a socket 61 connected to a lead 62. A second socket 69 connected to a lead 70 is carried by a door.67 and engages the other battery terminal 54a when the door is in the closed position.
Patent GB-587202-A (GB)
Title: Improvements in or relating to tractor-mounted agricultural implements
IPC: A01B63/02
Filed: 1944-11-30
Abstract: 587,202. Tractor cultivators. INTERNATIONAL HARVESTER CO. OF GREAT BRITAIN, Ltd. (International Harvester Co.). Nov. 30, 1944, No. 23933. [Class 6 (i)] An agricultural tractor having forward and rear sets of tools mounted for independent vertical adjustment has means whereby tools on one side of the tractor may be raised independently of those on the other side, the whole operation being conducted by a power source on the tractor. A bracket 20 attached to the rear axle structure 14 has parallel links 18, 19 supporting tools' 17, and also a pivoted rod 22 attached to a rod 23 pivoted to the lower link 19. A similar rig 25 is situated at the forward end of the tractor where bracket 29 has parallel links 27, 28 supporting tools 26 and a pivoted rod 31 connected to lift rod 32. The body of the tractor has a housing 33 containing a rockable shaft 49 and sleeve 50, Fig. 3, journalled in bearings 48. To the sleeve 50 is attached a lever 52 with a link 54 connecting it to rod 31 while lever 51 is attached to the shaft 49 with a link 53 connecting it to rod 22. The movements of shaft 49 and sleeve 50 are governed by pistons 55, 56 working in hydraulic rams 34, 35 respectively. Sleeve 50 is attached by link 57 to piston 56 and shaft 49 is attached by link 61 through a break in the sleeve 50 to the piston 55. The shaft and sleeve can be operated independently by levers 37, 36 working in a slotted quadrant 40 attached to steering pillar 38. Links 43, 44 operate rams 35, 34 respectively by way of sleeve 66 and shaft 62 respectively. The various lever mechanisms described are situated on both sides of the machine so that by the operation of lever 36 the front tools may be raised or lowered and by operating the lever 37 the rear tools may be raised or lowered. The link 54 may be connected to lever 51 on one side of the machine and the link 53 attached to lever 52 on the other side with the result that the tools on one side can be raised or lowered by lever 36 and the tools on the other side may be adjusted by lever 37.
Patent GB-303916-A (GB)
Title: Improvements in mixed fertilizers
IPC: C05C5/02
Filed: 1927-09-12
Abstract: 303,916. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Sept. 12, 1927. Manures.-A fertilizer is made by mixing together potassium nitrate and sodium nitrate, the amount of sodium nitrate being preferably between 20 per cent and 50 per cent of the whole and not more than 60 per cent.
Patent GB-1134404-A (GB)
Title: Improvements in electric lamp holders
Inventor: CLAXTON JAMES
IPC: H01R33/22
Filed: 1965-06-04
Abstract: 1,134,404. Lampholders. ENFIELD-STANDARD POWER CABLES Ltd. 28 July, 1966 [4 June, 1965], No. 23999/65. Heading H2E. A lampholder comprises a screw-threaded resilient insulating body 24 in whichaconductive insert 31 is embedded so that exposed portions of it lie along at least the inner edge of the screw thread 25 to form a contact for engaging a screw-threaded lamp base. The insert may be in the form of a wire helix 31 (Fig. 4, not shown) whose longitudinal axis lies along the screw thread 25 so that part of each turn is exposed. The helix may have a central wire to reinforce the body 24. Alternatively, the insert is formed by a twisted metal strip, two wires twisted together or a sleeve of wire gauze having inwardly pressed portions which are exposed to form the contact. A spring plunger contact 26 is embedded in the base of the body 24, the plunger 26 and the contact insert 31 being secured to portions 29 and 34 of a cable. A further resilient insulating body 21 may be moulded around the body 24 and the cable, extensions of the body 21 acting as cable grips. The inner and outer bodies 24 and 21 are preferably of nylon and polychloroprene respectively.
Patent GB-1305666-A (GB)
IPC: H01J35/10
Filed: 1971-04-19
Abstract: 1305666 X-ray tubes COMPAGNIE GENERALE DE RADIOLOGIE 19 April 1971 [13 March 1970] 24004/71 Heading H1D [Also in Division B3] A disc-shaped anode for a rotary anode X-ray tube comprises a hollow shell of refractory metal filled with a metal or alloy such as sodium which is liquid at the operating temperature. The rear surface of the anode is preferably corrugated to permit differential thermal expansion. The shell may be of X-ray emissive metal or alloy, or may be coated with such a metal over the focal path. The anode may be manufactured from pre-shaped metal blanks which are welded together by electron bombardment and filled with sodium in a vacuum.
Patent GB-969692-A (GB)
Title: Constructional unit comprising a semiconductor rectifier set and a transductor
IPC: H01L25/03
Filed: 1962-06-22
Abstract: 969,692. Converting. BROWN, BOVERI & CO. Ltd. June 22, 1962 [June 24, 1961], No. 24068/62. Heading H2F. [Also in Division H1] In a transductor controlled rectifier arrangement the main current windings are in the form of two concentric cylinders 2 and 3 joined at one end, with an annular gap in the outer cylinder bridged by the parallel connected rectifiers 5 and with the magnetic core in the form of a number of rings 1 between the winding cylinders. The control winding 7 surrounds the rings as shown and fuses 6 may be connected in series with each of the rectifiers 5. With this arrangement the inductance of the windings when the magnetic cores are saturated is very low as there is no magnetic - field outside the outer cylinder. In the embodiment of Fig. 4 there are two sets of parallel connected rectifiers which may form two arms of a bridge. The inner cylinder 11 passes through the magnetic core 1 and connects with a conducting ring 8 which is part of the outer cylinder 15 to which it is connected through the rectifiers and fuses as before. Further conducting rings 8, 13 are respectively connected to another outer cylinder 17 and to the first ring 8. Forced air cooling may be provided 20, and cooling fins 9 are fitted on the inside of the rings 8. The rings 8 and 13 are mechanically connected by pillars placed between the rectifiers (Fig. 6, not shown). A current transformer may be fitted around the inner cylinder 11.
Patent GB-1529049-A (GB)
Title: Explosive-powered fastener-driving tool incorporating a plunger arrester
IPC: B25C1/14
Filed: 1977-06-09
Abstract: 1529049 Plunger arrester for fastener driver tool HILTI AG 9 June 1977 [19 July 1976] 24193/77 Heading B4C An explosive powered fastener-driving tool comprises a barrel 3, a piston 6, a muzzle tube 9, a resilient damping means 11, arranged between muzzle tube 9 and barrel 3 and an arresting ring 7 disposed between damping means 11 and barrel 3 and adapted to be penetrated by a shaft 6b of the piston and to be urged towards the damping means by an air cushion which builds up between the ring and a piston head 6a on forward travel of the piston is characterized in that damping means 11 comprises a series of ring pairs disposed in line, the outer ring 11a and inner ring 11b of each pair having corresponding contact surfaces 11c, the outer ring 11a of each pair projecting forwards (towards the muzzle) relative to inner ring 11b. Immediately after firing cartridges 5 vent 3c facilitates acceleration of the piston. Then groove 3d allows the combustion gases to act on arresting ring 7 to move it forwards and so reduce the impact of piston head 6a upon the ring. The ring pairs are contained in a tube 12 rendered radially resilient by a longitudinal slot 12a. In the embodiment of Figs. 2, 3, not shown, the length of each ring pair is greater and the cone angle smaller than of each ring pair closer to arresting ring 7, the maximum core angle (α) being 60 degrees. The smaller mass of the closest ring pairs permits rapid initial acceleration of arresting ring 7.
Patent GB-662739-A (GB)
Title: Improvements in or relating to water heaters
IPC: F24H9/12
Filed: 1948-09-16
Abstract: 662,739. Delivery arrangements for hotwater boilers. MAUNDER, H. N. Sept. 16, 1948 [July 19, 1948], No. 24385/48. [A Specification was laid open to inspection under Sect. 91 of the Acts, March 30, 1949.] Class 64(i) In a " push through " water heater having a water-heating cylinder 1 and an auxiliary chamber 2 with its water inlet and outlet 9 so connected with the outlet pipe 6 from the cylinder that water in the cylinder is displaced into the chamber 2 by expansion during heating and so that water is drawn from the auxiliary chamber 2 when hot water is displaced from the cylinder through the outlet pipe 6, an air vent 10 is so provided in the outlet pipe 6 as to obviate any siphonic discharge of water from the auxiliary chamber 2 when the water tap supplying the cylinder 1 is turned off. When the tap is turned off, water in the part 5 of the outlet pipe flows through the aperture 9 into the chamber 2. The latter is provided with a vent 11. A constriction 4 is provided where the outlet pipe is connected to the cylinder. Specification 342,073 is referred to. The Specification as open to inspection under Sect. 91 comprises also a water heater, Fig. 1 (Cancelled), in which the expansion chamber 5 is connected by a pipe 7 to the inlet 3, which has an injector 8 at the junction. The chamber 5 is connected to the atmosphere by a pipe 9 containing a non-return valve 10, so that when water is not being drawn from the heater the pressure in the chamber 5 is above atmospheric. This subject-matter does not appear in the Specification as accepted.
Patent GB-854590-A (GB)
Title: Improvements in or relating to portable gramophones for stereophonic sound reproduction
Inventor: SCHMIDBERGER ERICH
IPC: G11B33/02
Filed: 1959-07-17
Abstract: 854,590. Gramophone cabinets. STEIDINGER, O., and STEIDINGER, S., [trading as STEIDINGER GEB. KOMM. GES.]. July 17, 1959 [Aug. 2, 1958], No. 24564/59. Class 40 (2). A portable stereo gramophone cabinet has the mechanism sandwiched for transport between upper and lower detachable lids 3, 2 supporting the loud-speakers. The lower lid 2 also provides record storage.
Patent GB-379856-A (GB)
Title: An improvement in or relating to safety razors
IPC: B26B21/18
Filed: 1931-09-02
Abstract: 379,856. Safety razors. HUDSON, D. P., 34, Cleveland Road, Huddersfield. Sept. 2, 1931, No. 24618. [Class 30.] A thin, transversely - flexed safety razor blade 17 is clamped between a guard-plate 10 and a cover-plate 14 by means utilizing its own resiliency and comprising two notched pins 15 on one plate the undercut shoulders of which are engaged, by relative endwise movement in their own plane of the plates 10, 14, with upstanding lips 13 on the margin of pin-receiving rectangular apertures in the other plate. The lips and notches may be provided on each side of the apertures and pins so as to be engageable in both directions. The guard has a central longitudinal raised part 19 which presses the blade during clamping into the concavity of the cover-plate, which concavity is in excess of that of the blade when in use. A modification shows the pins 15 mounted on the guard instead of on the cover - plate. The guard may be toothed, and the handle integral with or secured to it. Specifications 273,152 and 335,127, [both in Class 30, Cutlery], are referred to.
Patent GB-1149029-A (GB)
Title: Improvements in or relating to structural glazing panels
Inventor: ZOPNEK HANS
IPC: E06B3/663
Filed: 1966-06-02
Abstract: 1,149,029. Glazing panels. H. ZOPNEK. 2 June, 1966 [15 June, 1965], No. 24643/66. Addition to 1051853. Heading E1R. In the glazing panel of the parent specification 1,051,853 only the longitudinal sides of the glazing panel are closed, the other two sides being left open to form an open ended box glass element and a plurality of them may be assembled so that their longitudinal edges 10 of adjacent glass sheets 1 of adjacent panels are parallel and face each other, the adjacent panels being retained together by preferably heat and sound insulating material bars 9 extending in the spaces 7. The composite panel may constitute at least part of a wall structure. One end of the glass 'box element may be closed by a profiled cover of metal or synthetic resinous plastics, and secured by adhesive whilst the other end may have a loose cover.
Patent GB-1500226-A (GB)
Title: Method of contacting liquid and gaseous phases
IPC: B01J19/22
Filed: 1976-06-15
Abstract: 1500226 Gas/liquid contacting CENTRE DE RECHERCHES METALLURGIQUESCENTRUM VOOR RESEARCH IN DE METALLURGIE 15 June 1976 [24 June 1975] 24676/76 Headings B1B and B1R Liquid and gas, e.g. in a scrubbing, distillation or stuffing process are contacted in a column having a plurality of perforated plates spaced one above the other, in which each plate undergoes translational or rotational (about an axis normal to its plane) movement whilebeing subjected to a cleaning action to remove deposited material from at least one of its faces. Column 1 contains as plates a perforate rubber belt 7 passing in alternating, horizontal directions over rollers. The belt may either be endless or move backwards and forwards from two rollers. The liquid descends from plate to plate with weirs 11 to control the depth of liquid on each plate. During the displacement the belt is either subjected to traction or brushed to remove encrustations. The process exemplified is the purification of coke plant waste water with steam.
Patent GB-1173818-A (GB)
Title: Follow-Up Control Device, Particularly for Flame Cutting Machines
IPC: B23Q35/128
Filed: 1967-05-26
Abstract: 1,173,818. Template followers. MESSER GRIESHEIM G.m.b.H. May 26, 1967 [May 27, 1966], No.24683/67. Heading G3N. To control the rate of advance of a follow-up device, particularly of a template or drawing controlled flame cutting machine in which a photoelectric scanning head 1 through an amplifier 3 controls a motor 4 turning the scanning head, the motor being optionally coupled to a co-ordinate resolver 6, a non-linear device such as a lamp 8 and photo-resistor 10 variably shunts the resolver rotor winding 11. The device 8, 10 may be replaced by a valve or transistor amplifier and the non-linear characteristic may be provided by a voltage dependent switch such as a Zener diode. In a modification, a photo-cell may be connected in series opposition with the resolver supply 14. A bias voltage may be superimposed on line 9. Where a resolver is not used, the output from the device 8, 10 may directly or indirectly control the speed of an advancing motor and in addition may regulate other factors, for example the temperature of a tool in dependence on its speed of advance. Digital control signals may be used in place of analogue signals. The lamp may be of the gas discharge type.
Patent GB-1434367-A (GB)
Title: Plunging apparatus
IPC: C21C1/10
Filed: 1972-05-25
Abstract: 1434367 Treating iron FOSECO INTERNATIONAL Ltd 2 May 1973 [25 May 1972 21 June 1972] 24737/72 and 29130/72 Heading C7D Plunging apparatus for introducing treatment material to a container of molten metal, e.g. a torpedo ladle, is provided with one or more vertical shafts which are fixed in a hole or holes in a holder, which is raised or lowered by a crane. Fig. 2 shows a bell 6, having shafts 7, 8, in which a parcel of treatment material 9 and drums 10, held together by metal tapes 11, are supported by metal plate 12. In another embodiment Figs. 3, 4, (not shown), the plunging apparatus is formed from beams (13) defining a chamber for holding a metal box (14) of material. The bell 6 and beams (13) may be manufactured from steel-fibrereinforced refractory material, and the apparatus may be used for desulphurizing iron using Mgimpregnated coke.
Patent GB-683894-A (GB)
Title: Improvements in and relating to high frequency generators
IPC: H05B6/48
Filed: 1949-09-27
Abstract: 683,894. Valve generating circuits. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 27, 1949 [Oct. 1, 1948], No. 24790/49. Class 40 (vi). [Also in Group XL (b)] A high-frequency power generator comprises a valve 4 and a resonant circuit comprising a concentric line 1 and 2, short-circuited at one end and shunted by a condenser 3 at the other, the valve 4 being situated within the inner conductor 1 to shelter it from the intense electromagnetic field present during operation. The external conductor 2 of the line is earthed while the inner conductor 1 serves as supply conductor to the valve. The circuit 10 is described in Specification 609,038 and behaves as a variable resistance in such a manner as to maintain constant the current circulating in the grid circuit of the valve. Cooling air for the valve can pass up conductor 1. Specification 619,244, [Group XI], also is referred to.
Patent GB-1020151-A (GB)
Title: Electrical semiconductor device
IPC: H01L29/00
Filed: 1963-06-21
Abstract: 1,020,151. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. June 21, 1963 [July 27, 1962], No. 24827/63. Heading H1K. A semi-conductor mounting structure comprises an insulating disc having a cavity therein for accommodating a semi-conductor element and a metallic layer on both sides of the disc to which the electrodes of the element are connected. The disc 1 consists of a ceramic material having metallized faces to which the metal layers 4, 6 are soldered. The element 3 is preferably soldered to one layer e.g. 4 and is connected to the other layer via a spring 5, a wire soldered in a depression in the remote face of layer 6 (Fig. 3, not shown) or via a dimple on a flexible metal disc located between the insulating disc and the other layer (Fig. 2, not shown). A plurality of such devices may be mounted on a rod extending through a central aperture 7 of the device and a plurality of rectifier elements may be connected in parallel by locating them in a single disc. The semi-conductor element may comprise silicon, germanium or an intermetallic compound.