baber/WOPTO huggingface dataset:
Patent GB-274704-A (GB)
Title: Improvements in electricity meters of the induction type
IPC: G01R11/36
Filed: 1926-12-03
Abstract: 274,704. Korting & Mathieson Akt.- Ges., and Kopp, R. Dec. 3, 1926. Induction motor meters of the type having a three-limbed current magnet with series windings on its outer limbs and a three-limbed potential core with a shunt winding on its central limb, disposed on opposite sides of the armature disc, are so arranged that the centres of the pole surfaces of the series magnet are closer together than the centres of the cross-section of the remaining parts of the outer limbs, so as to bring the active series fields closer together giving an increased torque. A plan of the driving system is shown in full lines and the shunt magnet, situated on the opposite side of the disc 1, is shown in dotted lines. The outer poles, on which the series coils are wound, are formed at their free end with notches on the sides remote from the central pole 3, so as to leave pole surfaces 4 narrower than the main part of the cores, their centres therefore being nearer to the central core 3. Into the notches cut in the outer cores is fitted a magnetic shunt 13, with the interposition of blocks of insulating material. Pole-shoes 5 are fitted to the outer poles, and are inclined towards one another and extend in directions perpendicular to the radii 11 through the outer polecores 9 of the shunt magnet. The centre polecore 3 may be extended towards the edge of the disc 1 by a pole-shoe 7. The shoes 5, 7 may be so shaped as to cause the centres of the three series magnetic fields to lie on a circle having its centre at the centre 2 of the disc. A large U-shaped choking-core 10 is arranged between the ends of the cores 8, 9 of the shunt magnet and is broadened towards the axis 2 so as to produce a good return for the lines of force produced by the current.
Patent GB-660818-A (GB)
Title: Improvements in or relating to a combined clutch, reverse and reduction gear
IPC: F16H3/60
Filed: 1948-11-25
Abstract: 660,818. Friction clutches; reversing-gearing. LANGDON, A. G. Dec. 22, 1949 [Nov. 25, 1948], No. 30625/48. Class 80 (ii) An epicyclic reversing gear, particularly for internal combustion engines, is combined with a reduction gear so arranged that the clutch and reversing gear are disposed on the slowrunning driven shaft, thereby reducing wear and overheating. The driving shaft 1 carries a spur gear 6 meshing with a gear 7 keyed on the hub of a bevel sun gear 9 loose on the driven shaft 10. Two or more bevel planets 13 are carried by trunnions on a bush 15 loose on the shaft 10, and engage a second bevel sun wheel 19 keyed to the driven shaft 10. The ends of the trunnions engage slideways provided in a brake drum 18 which also houses a clutch comprising two sets of friction discs engaging respectively splines on the hub of the gear 19 and splines on the drum 18. An expanding washer comprising a pair of plates 25 between which one or more balls ride in a cam track is acted upon by push pins 27 operated by cams 28. The cams are engaged by a sleeve 29 moved by a forked arm 30 connected to an operating lever 32 outside the gear casing 2. Operation of the lever 32 also moves a rockable arm (not shown) carrying an adjustable set screw engaging a pin 36, Fig. 2, arranged to apply a brake band 33 to the drum 18. The band 33 is machined on inner and outer faces and has a close working fit between the drum 18 and thickened parts of the casing 2. In position " A " of the operating lever 32, the clutch plates are disengaged and the brake band 33 applied, giving a reverse drive; in position " B " the brake is released to give a free engine; and in position " C " the clutch plates are engaged to give a forward drive. The whole gear runs in an oil-bath, lubricating passages being provided in the gear 7 and shaft 10. A rear cover plate 18a of the brake drum may be adjustably screwed with the cams 28 into the drum to compensate for wear of the clutch plates.
Patent GB-974294-A (GB)
Title: Improvements in or relating to travelling wave tubes
Inventor: NEWLAND FRANCIS JOHN
IPC: H01J23/083
Filed: 1962-08-09
Abstract: 974,294. Travelling wave tubes. M-O VALVE CO. Ltd. June 25, 1963 [Aug. 6, 1962], No. 30661/62. Heading H1D. A travelling-wave tube has an electrostatic focusing device as described and claimed in Specification 835,350 in which the slow wave structure 1, Fig. 1, is in the form of a single elongated conductor, sections 2 of which constitute the elements of both periodic structures of the focusing device, the conductor being folded so that the elements are joined together end to end in a sequence, alternating between the two periodic structures, which is the same as the sequence in which the elements are arrayed along the space between the periodic structures, the major parts of all the elements being substantially rectilinear and parallel to each other. The elements are joined by tabs 3 which are used to support the structure in glass strips 4, 5, Fig. 3. Input and output radio frequency connections are made by a helix coupler 36, 39. In operation, metal member 8, 9 and the delay line 1 serve to focus an electron beam projected through the structure, and metal members 8, 9 and portions of the metal envelope 33 serve to form a ridged waveguide the cut-off frequency of which is substantially higher than the operating frequency of the tube, thus stabilizing operation.
Patent GB-1004310-A (GB)
Title: 1,6-dimethyl-ergoline i derivatives
IPC: F16L37/28
Filed: 1964-08-04
Abstract: The invention comprises 1-methyl-N-carbobenzoxy - dihydrolysergamine, its non - toxic acid addition salts, and its preparation by reaction of 1-methyl-dihydrolysergamine with carbobenzoxy chloride in the presence of a tertiary amine.  The compounds of the invention have anticephalea, antiallergic and anti-inflammatory properties and may be used in pharmaceutical compositions in combination with a carrier, for example in forms suitable for oral, parenteral or rectal administration, such as tablets, powders, pills, capsules or elixirs.
Patent GB-599780-A (GB)
Title: Improvements in or relating to electric switch contacts
IPC: H01H1/22
Filed: 1945-11-16
Abstract: 599,780. Switch contacts. NAAMLOOZE VENNOOTSCHAP F A B R I E K VAN ELECTRISCHE APPARATEN VOORHEEN F. HAZEMEIJER & CO. Nov. 16, 1945, No. 30727. Convention date, May 12, 1941. [Class 38(v)] In a replaceable contact for drum-type switches, wherein current flows through the pivot 4 between the contact finger 2 and the carrier 3, a spring 8 maintains contact pressure at the pivot without imparting any substantial turning moment to the finger 2; and the pressure at the contact surface 1 is provided by lighter spring 7. In Fig. 3, the carrier and finger are bent so that the spring 8 acts directly through the pivot.
Patent GB-244747-A (GB)
Title: Manufacture of derivatives of pyridine-3-carboxylic acid
Filed: 1925-12-05
Abstract: Dialkylamides of nicotinic acid are obtained by causing quinolinic acid anhydride to react with a saturated or unsaturated dialkylamine, and heating the reaction product.  In an example, quinolinic acid anhydride is heated with excess of diethylamine to form the diethylamine salt of quinolinic diethylamic acid.  On heating the latter, carbon dioxide and diethylamine are evolved, and combine in part in the receiver to form diethylamine carbaminate.  By distilling the residue under reduced pressure the diethylamide of nicotinic acid is obtained.  By using the appropriate secondary amine instead of diethylamine, the dipropylamide, diamylamide, piperidide, diallylamide, methylpropylamide, and ethylpropylamide may be obtained. Specification 184,625 is referred to.
Patent GB-727434-A (GB)
Title: Improvements relating to frequency measuring instruments
Inventor: SILLS FREDERICK ARTHUR
IPC: G01R23/02
Filed: 1952-12-04
Abstract: 727,434. Frequency discrimination. CROMPTON PARKINSON, Ltd. Nov. 24, 1953 [Dec. 4, 1952], No. 30821/52. Class 40 (5). A frequency-measuring bridge comprises tuned circuit arms 1, 2 and half-wave rectifiers 5, 6 shunting resistor arms 3, 4. The rectifiers 5, 6 are similarly poled and resistors 3, 4 may be equal in value with the bridge fed at 12 from the supply mains and 1, 2 resonant above and below and having equal impedance at the normal frequency of the supply mains 12 so that under these conditions the bridge is balanced and centre-zero microammeter 17 remains undeflected. If the frequency 12 deviates from normal the bridge is unbalanced and the impedances of 1, 2 vary oppositely and resistors 3, 4 conduct during the same half-cycles and microammeter 17 averages half-cycle pulses and thus indicates the sense and magnitude of the deviation in the supply frequency 12. During the half-waves when rectifiers 5, 6 conduct, resistors 3, 4 are short-circuited and bridge output is always zero. The bridge comprises a balancing potentiometer 11 and is paralleled with a stabilizing load resistor 16 and fed through high-frequency attenuator-inductor 15 and this may be adjustable to ensure pure sinewaves at a desired voltage across the bridge. To compensate for supply voltage variations the microammeter 17 is shunted by reverse-parallel half-wave rectifiers 20, 21. In a modification the bridge is balanced at off-normal frequency so that frequency change in one sense only is indicated. Also an arrangement may be used in which the resistor arms are not equal so that at bridge balance the impedances of the tuned circuits are not equal.
Patent GB-1134123-A (GB)
Title: Stopper for containers
IPC: B65D39/16
Filed: 1966-07-08
Abstract: 1,134,123. Stoppers. HANS SCHWARZKOPF. 8 July, 1966 [8 July, 1965]; No. 30822/66. Heading B8T. A resilient plastics stopper 2 has two adjacent frusto-conical surfaces 4 with a common minimum diameter which coact with corresponding surfaces in the neck B of a glass or plastics bottle 1. A circular flat surface 3 around the stopper seats on a similar surface A around the top of the neck B. The stopper 2 can be removed from the neck B by lateral thumb-pressure. As a modification, the stopper may be solid.
Patent GB-1383428-A (GB)
Title: Apparatus for welding handles onto webs for forming carrier bags
IPC: B29C65/00
Filed: 1972-06-30
Abstract: 1383428 Manufacture of carrier bags WINDMOLLER & HOLSCHER 30 June 1972 [2 July 1971] 30829/72 Heading A4G Apparatus for welding handles to the edges of a web of thermoplastics material which is folded so that the two edges are adjacent, and both edges are folded into the mouth of the web, comprises a pre-heating station 2 with a heated tongue 6, 6' for projecting between the edges, preferably associated with backing members 7, 7' outside the web, and a welding station 3 downstream of the preheating station, the handles being welded on at the welding station. Intermittent feedrollers 1 pull the web through the stations 2 and 3, the preheating and welding occurring when the web is stopped, and the bags are transversely sealed and severed at 4.
Patent GB-734826-A (GB)
Title: Shock mounting for solenoids
Inventor: JENCKS HOLLIS WELLS
IPC: H01F7/08
Filed: 1953-11-09
Abstract: 734,826. Electromagnets. CLEVERDON, C. C. Nov. 9, 1953, No. 30988/53. Class 35. In an electromagnet having a substantially T-shaped plunger 18 the shock of the striking engagement of the plunger against the core frame 10 is absorbed by a yieldable pad 64 interposed between a supporting plate 24 and the core frame. The plate 24 and the pad 64 are supported by a U-shaped spring fastener 66 which is applied to the frame 10 by a snap-on action. When the plunger is nearing the end of its upward journey, its head 22 strikes a back stop-plate 52 which is resiliently supported by side-plates 34 through resilient members 56. The latter are placed in channels formed in'the plate by flanges 58 which are arranged to be received by openings 62 formed at the top of the sideplates 34.
Patent GB-1063244-A (GB)
Title: Improvements relating to microporous media and processes for preparing the same
IPC: H01M2/16
Filed: 1963-08-06
Abstract: 1,063,244. Porous coated sheet material; fluid filtering medium. LLOYD & HILLMAN Ltd. Aug. 6, 1963 [Aug. 6, 1962], No. 30990/63. Headings B1D, BIT and B2E. A medium capable of removing ultrafine particles from fluids comprises a porous base e.g. of paper, and a micro-porous layer adherent thereto. This layer comprises fibres of which a significant proportion extend outwards from the base at an angle of at least 30 degrees and has a maximum pore diameter of 10 microns and a voids volume of at least 75%. It may be made by applying to the base a dispersion comprising a dispersing fluid and particulate fibrous material and controlling the type, size and number of fibres and the state of their dispersion to obtain the required properties when the fibrous material is deposited on the base. Successive layers may be applied in this way. The first applied layer may be a binding layer containing a binder, or the or each main coating layer may contain a binder, e.g. an epoxy resin phenol-, urea-, melamineformaldehyde resins, polyester resins, polyethylene, polypropylene, polyoxymethylene, polyisobutylene, polyamides, cellulose acetate, ethylcellulose, vinyl chloride copolymerised with vinyl acetate, polyvinyl chloride, polyvinylidene chloride, polyvinyl butyral, p.t.F.e., polytrifluorochloroethylene, ligrin-sulphonate resins, starch, casein, terpene resins, polyacrylic resins, alkyd resins, synthetic rubbers such as butadiene-styrene copolymers. The fibrous material may be potassium titanate, asbestos or glass. The dispersion may also include a non-fibrous particulate material, e.g. silica.
Patent GB-182054-A (GB)
Title: Improvements in, and relating to tobacco pipes
IPC: A24F5/08
Filed: 1921-11-21
Abstract: 182,054. Harvey, H. J., and Harvey, C. F. Nov. 21, 1921. Tobacco pipes.-A conical cap F with an open or perforated bottom is formed with bent guide lugs D adapted to slide on a strip A, B which is folded at the end C and clipped on to the rim of the bowl.
Patent GB-280948-A (GB)
IPC: H05B41/39
Filed: 1927-11-18
Abstract: 280,948. Valensi, G. Nov. 18, 1926, [Convention date]. Vacuum tubes; low-pressure metallic-vapour apparatus.-An ionic relay comprises means for producing main and auxiliary discharges, the currents to be repeated acting upon the auxiliary discharge. In the arrangement shown in the drawing, the main discharge takes place between a main electrode 2 and a group of electrodes comprising a filament 3, grid 3<1>, and plate 3<11>, and the auxiliary discharge between the filament and the plate 3<11>. The filament 3 may be replaced by an auxiliary arc provided with an intermediate electrode. The input voltage is applied at terminals 9 in the circuit of the grid 3<1>, or this grid may be omitted, the input voltage being then applied to the plate 3<11>. Current is derived from a potentiometer 7 fed through a transformer 6 from a generator 5 having a frequency higher than that of the input voltage. The voltage applied to the electrodes 2, 3" is insufficient to produce a discharge when the potential of grid 3<1> prevents flow of current, between 3 and 3<11>. A second grid may be associated with the electrodes 3, 3<1>, 3<11>. With polyphase working, the number of electrodes 2, 3<11> may correspond with the number of phases, a single grid and filament being used. The relay may be arranged to produce the local alternating current, generator 5 being dispensed with. The tube 1 may be filled with neon, argon, helium, mercury vapour &c. The relay may be used for television and like purposes as a light source varying in intensity with the modulating current; or a telephone or other indicator may be connected in the main anode circuit.
Patent GB-634476-A (GB)
Title: Improvements in centrifugal separators
IPC: B04B1/18
Filed: 1947-11-24
Abstract: 634,476. Centrifugal separators. AKTIEBOLAGET SEPARATOR. Nov. 24, 1947, No. 31071. Convention date, Dec. 14, 1946. [Class 23] The ring-shaped slide 11 is axially displaceable to uncover the sludge outlet 12 whilst the drum is rotating at full speed, displacement being wholly or partly effected by spring action. The slide 11 may be closed during operation by pressure produced by centrifugal action in the chamber 19 in a liquid supplied thereto through channels 21, 22 leading from a chamber 23 to which the operating liquid is supplied through a channel 24 in the bowl spindle 4. The chamber 19 is provided with orifices 20 which are permanently open, or with valve-controlled outlets, and is connected with the upper side of the flange 16 by holes 27 to keep the flange free from sludge. Channels 25 and 25a are provided to allow air to escape from the chamber 23 and the pressure chamber 19.
Patent GB-300201-A (GB)
Title: Folding chairs
IPC: A47C4/14
Filed: 1928-10-26
Abstract: 300,201. Nufold Furniture Co., (Assignees of Simmons, F.). Nov. 8, 1927, [Convention date]. Folding seats; bottoms.- A folding chair comprises a back frame, a seat frame foldably con. nected therewith for nesting therein, and front and rear legs pivotally connected to the seat frame within the confines thereof for folding to a nested relation within the seat and back frames. Such a chair is shown, comprising a back 10 with flanges 11, 12, to which is pivoted at 16 a seat 13 with flanges 14. 15. Legs 17, 18 are pivoted at 19 to and within the flanges 15. Arms 25, pivoted to the front legs at 26, are pivotally carried bv a transverse bar 22, and the seat is held in erected position by the engagement of links 20 with notches 23 in the flanges 11 of the back 10. A stepped locking bail 40 may be provided, to engage a cross bar 27 connecting the front legs. The seat bottom may comprise a base 31, carrying a cover 32 and stuffing 33, adapted to be inserted, from the back, between the flanges 14 and 30 and to be secured in such position by a U-shaped clip 34 driven in from behind. The seat is shown completely folded, in Fig. 3.
Patent GB-840935-A (GB)
Title: Improvements in and relating to apparatus for continuously measuring the concentration of substances present in a fluid
IPC: G01N27/04
Filed: 1956-10-12
Abstract: 840,935. Electric testing of fluids. ALGEMEEN TECHNISCH ONTWERPBUREAU ALTO N.V. Oct. 12, 1956 [Oct. 14, 1955], No. 31209/56. Class 37. A bridge circuit for measuring the concentration of insoluble insulating particles suspended in a liquid comprises a reference cell containing a reference liquid and a measuring cell containing the liquid to be measured, the impedance of the measuring cell when filled with the same liquid as the reference cell being substantially equal to twice the impedance of the reference cell, the bridge in this condition being substantially balanced. It is shown that in these circumstances the unbalance potential is substantially proportional to the concentration of insoluble particles in the liquid under test. The transition impedance between the electrode and the liquid must be kept constant and small, constancy being obtained by limiting the potential across the boundary layer to 150mV, so that a capacitive boundary layer is maintained. To this end if a tube of more than 350 mm. may be used the cell shown in Fig. 3 may be used. If the tube diameter must be less than this the arrangement of Fig. 4 may be used the electrodes being annular and separated by an insulating tube. The reference cell may contain an adjustable valve 18 for controlling the resistance thereof. Arrangements may be provided by varying the gain of the amplifier 3 feeding the measuring instrument 4, in accordance with fluctuation of the supply potential.
Patent GB-249239-A (GB)
Title: Improvements in or relating to the emulsification and pasteurization of cheese
IPC: A23C19/08
Filed: 1924-12-30
Abstract: 249,239. Jackson, W. J. Mellerah-, (Swift & Co.). Dec. 30, 1924. Cheese is emulsified by intense agitation under pressure at a low temperature and then pasteurized or sterilized in a continuous manner. As shown, the emulsification is effected by a screw 2 and back pressure is introduced by the fitting of a perforated plate 20. The pasteurization takes place in a chamber 8 containing heated surfaces, such as tubes 10 through which passes hot water or steam introduced by a pipe 12 and allowed to escape through an opening 15 at the top. The cheese to be treated may be a blend of new and old cheese and may be cut up, ground, and mixed before emulsification. An emulsifying agent such as a small amount of soda may be added. Specifications 249,238 and 249,240 are referred to.
Patent GB-859674-A (GB)
Title: Improvements in easy chairs
IPC: A47C3/12
Filed: 1958-10-01
Abstract: 859,674. Seats; frames. LOFFLER, G. Oct. 1, 1958 [Oct. 11, 1957], No. 31291/58. Classes 52(2), 52(3) and 52(4) A resilient surface of elastic cords or sheeting is mounted in a rigid or elastic frame disposed at an oblique angle and mounted on legs individually adjustable for height, the surface 3 sagging under load to form the seat and back rest. As shown in Fig. 1 the legs 2 are rotatable on a rigid frame 1 so that increase of splay effects an adjustment in height and the legs can fold against the frame for storage. In a modification, Fig. 7, U-shaped tubular telescopic legs 15 are pivoted at 16 for folding and carry a resilient mesh with an elastic frame 14.
Patent GB-663568-A (GB)
Title: Improvements in the production of concrete
IPC: C04B28/04
Filed: 1948-12-03
Abstract: 663,568. Porous concrete. BESSEY, G. E. Dec. 5, 1949 [Dec. 3, 1948], No. 31367/48. Classes 22 and 70 The aggregate of a light-weight concrete is partly or wholly composed of pulverized fuel ash. The aggregate need not be entirely finely divided, and the pulverized fuel ash need not comprise the whole of that part which is finely divided, in which latter case sand is used. The set concrete is hardened by steam at high pressure. To render the concrete porous a framing agent is used.
Patent GB-229434-A (GB)
Title: A new or improved slot drilling machine
IPC: B23B41/00
Filed: 1923-12-15
Abstract: 229,434. Pattison, A. H., and Hobourn, P. L. Dec. 15. 1923. Milling-machines.- In a slot-drilling machine particularly intended for slotting the stems of mushroom valves for internal - combustion engines and of the kind wherein two cutters are employed which are fed into the work from opposite sides, the cutters have simultaneous oscillatory movements in the plane of the required slot about independent pivots on opposite sides of the work. The cutters 6 are carried by headstocks 2 rotatable about vertical axes on saddles 3 which are fed to the work by cams 7 and levers 12, 13, and are retracted by springs. The cams are mounted on a common shaft under the machine which is driven through worm gearing from a shaft 15 intermittently rotated by a ratchet-wheel 18 and pawls 17 pivoted to links 20 connected to a crank-disc 22 driven through worm gearing from a main shaft 25. The headstocks are oscillated by a rod 38 having a pin-and-slot connection with both headstocks and reciprocated by a link 35 pivoted on an adjustable pin 36 and connected to a cam 37 driven from the shaft 25. The cams 7 may be arranged so that one cutter is withdrawn before the other, which is then further advanced to finish the slot. When both cutters have been withdrawn the feed motion is automatically stopped by means of an arm 13a on the lever 13 which engages a collar 14 slidable on the shaft 15 and connected by links 28 to a bevelled flange 26 adapted to coact with pins 27 on the pawls so as to rotate them out of gear with the ratchet. The flange 26 is connected to the links bv pins and slots allowing lost motion, so that it will not engage the pins 27 until a key 31 has been depressed by the collar 14 to permit a spring 29 to advance the flange rapidly. The feed is restored by a handle 34 which may also be used to increase the rate of feed during operation, the ratchet then overrunning the pawls. Gauging-devices.-The work 48 is retained by a clamp 49 against an adjustable gauging-stop 50.