baber/WOPTO huggingface dataset:
Patent GB-543187-A (GB)
Title: Processes for producing erythroidine and its salts
IPC: C07D491/20
Filed: 1940-07-13
Abstract: 543,187. Erythroidine and its salts. MERCK & CO., Inc., FOLKERS, K., and MAJOR, R. T. July 13, 1940, No. 11674. Addition to 522,225. [Class 2 (iii)] Erythroidine salts are prepared by a process which comprises dissolving a physiologically active alkaloidal fraction in absolute alcohol, acidifying the solution and crystallizing the erythroidine salts from the solution. The starting materials are preferably obtained according to the process of the parent Specification. If desired, the erythroidine salts obtained as above may be decomposed by treatment with alkali to give the pure alkaloid erythroidine. The salts obtained by the process of the present invention are a mixture of stereo-isomers, usually a mixture of two stereoisomerides which have been named α-erythroidine and #-erythroidine, respectively. A series of examples are given, in all of which the starting materials used are those prepared by the process of the parent Specification. The acids which are used in the examples include dry hydrogen chloride, 40 per cent. hydrobromic acid, glacial acetic acid, picrolonic acid, and flavianic acid.
Patent GB-296960-A (GB)
Title: Vacuum cleaner
IPC: A47L5/36
Filed: 1928-04-20
Abstract: 296,960. Breymann & Co., Ges. March 1, 1928, [Convention date]. Vacuum cleaners.-The runners g of a vacuum cleaner are pivotally mounted so that when spread out they form a wide running base and when drawn together they form a handle; they may carry wheels and hand grips k. A notched member, Fig. 3, holds the runners in either of their positions. The dust bag is suspended from a rod e on the fan casing, and has a ring fastened by a bayonet joint to the discharge opening of the fan. The runners may be suspended on a belt to enable the cleaner to be carried on the shoulder or strapped in front of the user.
Patent GB-1166922-A (GB)
Title: Method and device for producing high-power light pulses of short duration
Inventor: DAUGE GILBERT
IPC: H01S3/11
Filed: 1967-03-13
Abstract: 1,166,922. Lasers. COMMISSARIAT A L'ENERGIE ATOMIQUE. 13 March, 1967 [25 March, 1966], No. 11709/67. Heading H1C. Coherent light generated in a laser resonant cavity is concentrated into a wave packet having a length which is less than the length of the cavity and is then extracted from the cavity. The active medium 9 is initially pumped while cavity reflector 2 is non-parallel to reflector 13. With the reflectors parallel, electro-optical modulator M, consisting of a Pockels cell 12 and a Glan prism 10, is energized with A.C. so that its instant of maximum transmission recurs with a period equal to the time taken for light to travel from the modulator to reflector 2 and back to the modulator. As a result photons emitted from the active medium tend to concentrate in a wave packet which is transmitted by the modulator at the instant of maximum transmission. When this wave packet has formed a D.C. voltage is applied to electrooptical switch C, also consisting of a Pockels cell and Glan prism, to deflect the wave packet out of the cavity. In a second embodiment the modulator and switch are combined in a single unit and in a third embodiment this unit also performs the same function as the rotating prism 2, the cavity being initially give a low Q by applying a D.C. voltage to the electro-optical cell. The prism is in this embodiment replaced by a plane mirror.
Patent GB-957735-A (GB)
Title: A device for regulating the peripheral speed of a roller
IPC: D06B3/36
Filed: 1961-03-30
Abstract: 957,735. Gearing for conveying rotary motion. J. P. BEMBERG A.G. March 30, 1961 [April 8, 1960], No. 11722/61. Heading F2Q. [Also in Division D1] In a device for regulating the speed of a first roller through an indirect drive from a second roller, one having a resilient surface and the other having a rigid surface, a fixed bevel wheel on the shaft of the second roller engages a bevel wheel on a shaft pivotable about the shaft of the second roller and which drives a first friction disc which is displaceable and locatable on the pivotable shaft, and which transmits the rotation through a second friction disc to a shaft of the first roller, the second friction disc being displaceable laterally on its shaft and pressed against the first disc by a spring. The device illustrated has a bottom roller 1 driven through gear-wheel 3 and an upper roller 2 with a resilient covering. On the shaft of roller 1 is a fixed bevel wheel 4 which engages a bevel wheel 5 fixed to shaft 6 which is pivotable about the shaft of roller 1. Also fixed to shaft 6 but longitudinally adjustable thereon is a friction wheel 7 which engages a friction wheel 8 mounted for axial displacement but not for rotation on the shaft of roller 2 and spring urged into contact with wheel 7. The arrangement is such that variation of the radius of roller 2 due to its resilient covering varies the point of contact between friction wheels 8 and 7 so that the peripheral speed of the roller 2 at the point of contact remains equal to the peripheral speed of roller 1.
Patent GB-1078494-A (GB)
Title: Improvements relating to heat exchangers
Inventor: FRAME ALEXANDER GILCHRIST
IPC: F22B37/20
Filed: 1963-03-25
Abstract: 1,078,494. Steam generators, tube supports. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. March 17, 1964 [March 25, 1963], No. 11798/63. Headings F4A and F4S. A steam generator comprises parallel-connected sheath ducts 24 each lapped back to form spaced legs and each containing a cluster of tubes (not shown in Fig. 1) extending along the length of the duct. The steam generator has evaporating, superheating and reheating sections. In Fig. 1 the sheath ducts 24 are arranged in upper and lower horizontally extending batteries. The ducts are each formed from two converging straight legs and a connecting piece 26 and each extend in a vertical plane. The heating medium, e.g. liquid sodium, passes from inlet header 20, through pipes 27, upper sheath ducts 24, joining pieces 25, lower sheath ducts 24, pipes 28 to outlet header 21. The tubes of each cluster are arranged in concentric circles about an axial tube, each circle of tubes being supported in indentations in a respective ring (34), and the rings (34) being axially spaced. The ends of the tubes of each cluster are welded into respective tube plates in fittings 31. Water from inlet header 15 passes through pipes 42 through the inner tubes of the lower ducts forming the low temperature section, and pipes 43 to mixing header 16. Steam from header 16 passes through inner tubes of alternate upper ducts forming the high temperature section to outlet header 17. Reheating inlet header 18 feeds pipes 45 and the inner tubes of the other alternate upper ducts from where the steam passes to outlet header 19. Pressure relief devices (Fig. 4, not shown) comprise chambers separated from the interior of piece 26 by a bursting disc (37) and connected to a common vent. In a further embodiment (Fig. 6, not shown) the duets are arranged with both legs vertical and a pressure relief device (51) at the upper ends, the membrane being separated from the sodium liquid by gas.
Patent GB-513791-A (GB)
Title: Improvements in loom stop motions
IPC: D03D51/00
Filed: 1938-04-20
Abstract: 513,791. Measuring stop-motion for looms. BOARDMAN & BARON, Ltd., SIM, W., and SIM, J. April 20, 1938, No. 11818. [Class 142 (i)] A loom stop-motion, acting after a predetermined length of fabric has been woven, comprises a perforated ribbon 10 passing over a sprocket 9, driven by the take-up roller 1 through a clutch 3, and carrying a rider 15 adapted to displace a catch 19 to release one end 20 of a lever connected to mechanism (not shown) which trips the loom starting handle. The stop-motion is re-set by manually raising a member 24 which releases the clutch to allow a weight 14 to return the rider to its initial position and brings.the end 20 of the lever under the catch 19 by means of a link 23 connected to the other end of the lever.
Patent GB-591306-A (GB)
Title: An improved poultry house
IPC: A01K31/22
Filed: 1945-05-11
Abstract: 591,306. Poultry houses. HOLMES, F. [trading as CONTEMPORARY WOODWORK]. May 11, 1945, No. 11853. [Class 5 (ii)] A poultry house comprising a main compartment with a base tray or trays removable for cleaning purposes and nest boxes on the exterior of the main compartment with access for poultry from said compartment and further access to said nest boxes from outside the house for the collection of eggs, is provided with means for causing air circulation within the main compartment comprising openings under the eave of the roof for the entry of fresh air and one or more openings in the roof for the escape of used air. In the form shown a poultry house raised on bent metal stands 6 has nest boxes 9 situated on the outside, and the base in the form of a longitudinal trough 31, the bottom of which is a sliding tray which can be removed from outside the house to remove droppings. Two slatted flaps 22 can be let down to provide an entry for poultry. A third hinged flap 27 having a central glass panel covers the opening between flaps 22. It can be raised to form a shade while permitting free entry of air through the wire-netting 20a or slid out of view beneath the roof. Fresh air can enter through slits 34 under the eave of the roof, used air escaping through an elongated opening formed by overlapping sections 3 and 4 of the roof. The nest box has a hinged flap 37 at the back to form an egg trap, the base 10 of the box 9 being sloped towards the flap so that the egg pushes it open and rolls into the curved collecting end. A hinged opening is provided in the nest-box at the trap-end for removal of the egg. One stand 6 may be provided with holes to receive the axle of a pair of travelling wheels when it is required to move the house.
Patent GB-564878-A (GB)
Title: Improvements in rod screwing machines
IPC: B23G1/04
Filed: 1943-07-23
Abstract: 564,878. Screwing - machines. CARR & NICHOLS, Ltd., NICHOLS, J. W., and ANDERTON, H. July 23, 1943, No. 12013. [Class 83 (iii)] In a rod screwing machine the stock C is held in a self-tightening eccentric clamp D<1> on the front of a carriage B mounted by V-groove anti-friction wheels on correspondingly formed edges of bars A<1>, A<2> extending between the head A and a support a. The clamp is operated by a handle D<2>. In operation the screwing die E driven by chain gearing from a motor in the casing M, feeds the carriage B until a lug on it sliding on a rod K contacts a stop k<1>, shifting the bar and rocking a lever F to open the die head. The clamp D<1> is then released and the carriage is returned till a second stop k<2> closes the die head. The clamp is closed by hand just before the stop k<2> is reached to retract the stock through the die head sufficiently to ensure that when the die head closes it will engage the previously threaded part to ensure continuity of thread.
Patent GB-332282-A (GB)
Title: A new or improved magnesian cement and method of manufacturing the same
IPC: C04B9/00
Filed: 1929-04-18
Abstract: 332,282. Sperni, J. C. G. April 18, 1929. Cement.-A magnesian cement is mixed with 5-25 per cent by bulk of manganese oxide t prepare a hard setting cement. A solution of sodium silicate may be added, to improve the waterproof properties, and small quantities of potassium salts. A suitable magnesian cement is produced by finely powdering together burnt magnesite and dry unburnt clay, or magnesite and clay may be burnt together, the manganese oxide being added before or after. Fillers such as sand, sawdust, fibre, cork, leather waste, or pigments, such as 5 per cent ferric oxide may be incorporated. Specification 200,311 is referred to.
Patent GB-529583-A (GB)
Title: Improvements in or relating to electric indicating or repeating instruments
IPC: G01R5/20
Filed: 1939-04-21
Abstract: 529,583. Electric signalling systems. SMITH & SONS (MOTOR ACCESSORIES), Ltd., S., and MOSS, E. B. April 21, 1939, No. 12079. [Class 40 (i)] An indicating or repeating instrument comprises a stator with a winding in inwardly - opening slots, a rotor, positioned in accordance with the stator field distribution and operating a pointer or repeating member, and rotor bearings carried in or positioned with respect to a magnetic sleeve on which the stator bore is a close fit and which closes the stator slots. In the form shown in Fig. 1, the slotted stator stampings 11 carry continuous-current windings 12, connected in a 3-phase system, Fig. 4, and are mounted on the magnetic cupped sleeve 16 which is centred on a boss 19 of the base 18 of the instrument to which it is secured by a flange 17. The bearing 22 of the permanentmagnet rotor 20 is mounted in a socket 25 in the sleeve end 24, the arrangement being such as to allow a minimal airgap between the rotor and sleeves to be employed. The rotor spindle carries a pointer 27 and a permanent magnet 28 on the base restores it to its zero position as described in Specification 525,092, [Group XXXVI]. An alternating-current form is also described, comprising a round soft iron rotor, to which current is fed by contacts at the two ends of the spindle, and a zero-restoring permanent-magnet on the rotor spindle, as described in Specification 525,092. In this form, the stator laminae abut against an annular shoulder on the magnetic sleeve. This form may also be used as a transmitter for producing a current distribution, in accordance with the rotor position, which operates a remote indicator, for instance of similar construction. Fig. 4 shows the connections employed with an instrument as in Fig. 1 for indicating the level in a petrol tank by means of a float 41. The stator windings 12 are symmetrically tapped to a ring potentiometer 37 fed from a battery 40 by rotary contacts 38, 39 which are rotated by a pinion and rack 42 on the float.
Patent GB-540074-A (GB)
Title: Improvements in or relating to self-loading tipping trucks, lorries and the like
IPC: E02F3/56
Filed: 1940-07-25
Abstract: 540,074. Vehicles with loading apparatus ; excavating. HENDERSON, W. M. July 25, 1940, No. 12135. [Class 78 (iv)], [Also in Group XXI] A tipping vehicle is provided with a winch 1 with wire rope 11 which drags, an excavating spade or shovel 2 along the ground until it engages the end of a. jib 3 pivoted to the vehicle, after which further operation of the winch raises the jib and spade into a discharge position above the tipping body 4. The spade 2 is guided by the operator by handles 13 whilc excavating until prongs. 9 engage the end of the jib 3 which is of U-shape with the ends, bent at 3b and pivoted to the vehicle frame at 5. A stop 18 limits the forward movement. The winch may be driven from the engine of the truck.
Patent GB-603162-A (GB)
Title: Improved aluminium-base alloy
IPC: C22C21/00
Filed: 1945-05-15
Abstract: An aluminium-base alloy contains between 0 and 1 per cent of iron, between 0.1 and 5 per cent of silicon, between 0.1 and 3 per cent magnesium, and between 1.1 and 4 per cent (in total) of one or more of the group lead, tin and thallium, the balance being aluminium.  Up to a total of less than 2 per cent (in total) of one or more of the elements titanium, vanadium, molybdenum, chromium and tungsten may be added.  An addition of up to 10 per cent zinc may be made.  The Pb, Sn, Tl, and also Ti, V, Mo, Cr and W, may be added through chemical reaction, the salts of the metals to be added being poured on the surface of the bath of molten aluminium or aluminium alloys.
Patent GB-920291-A (GB)
Title: Improvements in or relating to bearings
Inventor: WILLANS JACK
IPC: F16F1/38
Filed: 1960-04-06
Abstract: 920,291. Bearing linings. BRITISH BELTING & ASBESTOS Ltd. March 1, 1961 [April 6, 1960], No. 12169/60. Class 12 (1). A bearing bush is formed between a shaft or spindle 1 and outer shells 2 by applying to the spindle surface 4 a layer of a fluorocarbon such as P.T.F.E. fibre or impregnated fabric and filling the remaining space with a suitable resinous or synthetic plastics material backing 3. The whole is then cured with or without heat and pressure to form an integral component. Axial location of the bearing is provided by modulations on the spindle surface or as in a further embodiment by means of a shoulder situated, on the shaft, at each end of the bush. Reference has been directed by the Comptroller to Specifications 840,686, 862,418 and 865,395.
Patent GB-289472-A (GB)
Title: Arrangements to protect capacitive loudspeakers against breakdown
IPC: H04R19/02
Filed: 1928-04-26
Abstract: 289,472. Ardenne, M. von. April 28, 1927, [Convention date]. Circuits for condenser telephones.-In order to protect condenser loud-speakers from total disablement due to arcing in the event of a breakdown of the dielectric, a high-ohmic resistance shunted by a high-capacity condenser is inserted in one of the supply leads. The resistance, although large, is small compared with the insulation resistance of the speaker, while the condenser capacity is much greater than that of the speaker, but not sufficient to give a discharge liable to damage the speaker. Specification 271,125 is referred to.
Patent GB-236701-A (GB)
Title: Improvements in and relating to bedstead fittings
IPC: F16B12/58
Filed: 1924-05-20
Abstract: 236,701. Rays Manufacturing Co., Ltd., and Browning, A. May 20, 1924. Connections.-A base-plate a for attachment to a corner post has integral therewith a bracket e with a horizontal surface supported by vertical flanges. A lateral projection n for supporting an end rail is provided, and has a platform p extending across the angle between this projection and the bracket. Turn buttons or like devices k, q, are provided to secure the side and end rails, which in the case of angle side-rails may have corresponding apertures on both flanges so that they may be used on either side.
Patent GB-125602-A (GB)
Title: Improvements connected with Ammunition Belts for Machine Guns.
Inventor: PRIDEAUX WILLIAM DE COURCY
IPC: F42B39/08
Filed: 1916-09-01
Abstract: 125,602. Prideaux, W. de C. Sept. 1, 1916. Cartridge belts.-Relates to ammunition belts of the kind formed of interconnected metal links having clips 2, 3 engaging the cartridges, and consists in forming one of the clips with an enlargement as A, Fig. 1, or a depression or slot as B, Fig. 3, at the place where the feed-pawls engage the belt, so that both pawls shall have equal action in pushing the belt through the feed-block of the gun. The invention is shown applied to a link of the belt described in Specification 15828/15, but may be applied to belts in which the links are hinged together by the cartridges themselves.
Patent GB-1086605-A (GB)
Title: Tool holder for a machine tool
Inventor: MARSHALL RONALD CLIFFORD
IPC: B23Q17/22
Filed: 1966-03-21
Abstract: 1,086,605. Toolholders. ROLLS ROYCE Ltd. March 21, 1966, No. 12412/66. Heading B3T. A lathe tool holder comprising an indexable tool post 10 which supports a tool at each of two sides, screws 64 for clamping the tools, an adjustable block 14 which carries a template 16 for setting the tools, each of the latter being moved into engagement with the template by pegs 53, Fig. 2, which are actuated by rotating a screw 31, Fig. 3. A vertical spindle 24 is keyed for axial movement in post 10 by a key 27, and screw 31 is screwed into the spindle, and held against axial movement in the body, by split collars 34. The spindle has a recess 40, 41 inclined to its axis which co-operates with an inclined land 51 on a horizontal spindle 42, the latter having flats 51, 52 which co-operate with the spring-urged pegs 53. A tool supporting screw 56 is carried in a pivoting latch 57, and an end screw for adjusting the tool longitudinally is provided for each tool. In operation, each tool is set by rotating screw 31 which moves spindle 24 vertically, and therefore spindle 42 horizontally, the pegs 53 thus urging the tool so that its cutting end 21 engages the shoulder 20 of the template. The tool is clamped, and the template removed, and after the tool has completed its operation, it trips an arm to control a mechanism, which withdraws and indexes the tool post.
Patent GB-674239-A (GB)
Title: Bearing
IPC: F16C27/06
Filed: 1949-05-11
Abstract: 674,239. Resilient mountings. HIRST. T. E. C. April 27, 1950 [May 11. 1949], No. 12510/49. Class 108(iii) In a resilient bearing, rubber 6 is in a free state (i.e. is not under stress until load is applied) and fills the space between a pin 2 and supporting housing 1. and one or more supporting tubes 3 restrict the flow of the rubber, which is not bonded to the surfaces of the pin 2, housing 1 or tube 3. As shown, the tube 3 is split circumferentially at 3' into two half-tubes. The tube 3 may however be in one piece and may be of constant diameter. The housing 1 may be of conical formation as shown dotted. According to the Provisional Specification, the rubber may be bonded to the pin 2, housing 1 and tube 3, and may be disposed under compression between them (before load is applied). The mounting is described as applied to a road-vehicle spring-shackle connection. The shackle plates may be tightened so as to raise up a collar of rubber at each end of the housing 1. Specification 411,622, [Group XXV], is referred to.
Patent GB-541391-A (GB)
Title: Improvements in push-pull valve amplifiers with negative feed-back
IPC: H03F1/36
Filed: 1940-08-02
Abstract: 541,391. Valve amplifying circuits. GENERAL ELECTRIC CO., Ltd., and MACFADYEN, K. A. Aug. 2, 1940, No. 12521. [Class 40 (v)] In a push-pull amplifier with negative feedback applied to both halves of a push-pull driver stage from a push-pull output stage the points between which the negative feedback is applied are connected by a centre tapped potentiometer shunted by a low resistance centre tapped choke. In this way feedback of an in-phase voltages to these points is prevented. The Figure shows driver and output stages 14, 141 and 2, 21 respectively coupled by a bridge transformer 16 as described in Specification 487,953. Feedback is applied to the prints 5, 51 shunted by the choke 10.