baber/WOPTO huggingface dataset:
Patent GB-149362-A (GB)
Title: Improvements in or relating to armour piercing projectiles
IPC: F42B14/02
Filed: 1918-04-25
Abstract: 149,362. Hadfield, Sir R. A., and Jack, A. G. M. April 25, 1918. Projectiles.-Relates to projectiles in which the driving band d is fitted into a groove cut in the rear part of the projectile but slightly in advance of the base b<1> so as to leave a Closing shoulder a<2> at the rear end of the groove. According to the invention, the rear end of the projectile is strengthened by making the groove shallower towards the front, the bottom a of the groove increasing in diameter gradually, as shown, or by steps towards the front end, where a small shoulder a<1> is left. The shoulders are undercut and the bottom of the groove made with waved ridges c, as usual.
Patent GB-102787-A (GB)
Title: Improvements in and relating to Railway Vehicle Controlling Systems.
Inventor: MURRAY WILLIAM BROOKS
IPC: B61L3/02
Filed: 1916-05-17
Abstract: 102,787. Murray, W. B. May 17, 1916. Valves controlled by relay valves; fluid actuating-mechanism; locking catches. - The throttle lever 167' and the catchhandle bolt 179<1> are operated by the piston of the cylinder 166<1> which is pivoted at one end. By the links 171<1>, 173', 175<1> the catch bolt is first withdrawn and the lever then moved to close the throttle valve.
Patent GB-235932-A (GB)
Title: Improvements in tone-regulating devices used in wireless telephony reception
IPC: H03G3/04
Filed: 1924-03-19
Abstract: 235,932. Gardner, C. H. March 19, 1924. Thermionic amplifiers. -A plurality of impedances such as resistances and condensers are adapted to be shunted at will, either singly or in groups, across the secondary of a low frequency intervalve transformer to improve the tone of the sounds emitted by a loud speaker or equivalent. Fig. 5 shows resistances 11, 12 and a switch 6 having contacts 2, 3, 4 so arranged that the secondary winding 9 of the transformer may he shunted bv either of the resistances. Condensers may be substituted for the resistances and more than two impedances may be used' either with or without, the open circuit contact 2. In addition a fixed condenser or resistance may be permanently connected across the transformer secondary. Fig. 4 shows a modification in which adjacent condensers 7, 8 are connected by a fixed resistance 9<a> and a common lead to the transformer secondary 9 is taken from an intermediate point in the resistance.
Patent GB-957690-A (GB)
Title: Recurring singnalling condition detector
IPC: H04J3/06
Filed: 1962-02-23
Abstract: 957,690. Automatic exchange systems; semi-conductor pulse circuits; multiplex pulse signalling. STANDARD TELEPHONES & CABLES Ltd. Feb. 23, 1962 [Feb. 27, 1961], No. 7068/62. Headings H3K, H4L and H4T. A device for detecting a recurring signalling condition in a pulse sequence comprises a signal generator capable of producing pulses at a first repetition frequency and a bi-stable device operable, in the event of a generator pulse not coinciding with the required signal condition, to modify the repetition frequency of the generator. As shown, Fig. 1, an incoming signal source 3 provides signals of the type shown at E, Fig. 2, and it is required to detect the pulse position 4 which repeatedly contains no pulse. The source 7 of clock signals A, is synchronized with the incoming source 3. The first clock signal cuts off transistor 10 to enable the blocking oscillator 9 to conduct. This charges condenser 14 negatively and causes a negative pulse to travel down the delay line 6. The delay of the delay line is adjusted by condenser 21 so that after a predetermined number of reflections a positive pulse is present at its output, and meantime condenser 14 has recharged sufficiently that this pulse can cause diode 13 to conduct and retrigger the blocking oscillator provided another clock pulse is present at this time. The period which has thus elapsed is the period t1. The output of the blocking oscillator is applied to a circuit 27, 28 which is caused to " ring " for half a cycle thus producing a sharp output pulse which is applied to the and-gate 34, and also to reset the bi-stable device 37. If the signal source is emitting a signal, however, and gate 34 emits a pulse which almost immediately sets the bi-stable device 37 again. This causes transistor 32 to switch in a condenser 30 in parallel with 21, to increase the delay time of the delay line, so that the interval between the firings of the blocking oscillator is increased to t 2  so that the next channel is tested. If this channel then subsequently carries a pulse the next channel is then similarly tested. The bi-stable device 37 is arranged to discharge a storage means 41 which is normally slowly charging. If the bi-stable device remains unoperated for a continuing period, the storage means 41 charges sufficiently to operate a switching means 42 to allow it to emit pulses from circuit 1 which are in synchronism with the position 4 which contains no pulse. The invention may be used to detect free channels in a multiplex switching system and an extended period of time in which no output signals occur can be used to provide an all trunks busy signal. Alternatively it may be used in a system in which a synchronizing signal is to be detected. This signal may consist of a regularly recurring signal in a particular position. In this case an inverter is inserted between the source 3 and the gate 34.
Patent GB-1159164-A (GB)
Title: Improvements in or relating to Magnetic Tape Transport
IPC: G11B15/43
Filed: 1967-02-14
Abstract: 1,159,164. Utilizing radiation detectors. CONSOLIDATED ELECTRO-DYNAMICS CORP. Feb. 14, 1967, No. 7069/67. Heading G1A. [Also in Divisions G3 and G5] The diameter of a loop of magnetic tape in a buffer chamber of a tape transport (see Divs. G3, G5) is controlled by means of a strip-light 60 shining through apertures (58, Fig. 3, not shown) in the chamber sidewalls 52, 54 to cast a shadow of the loop on to a photo-resistive layer 62 forming one arm of a resistance bridge Fig. 4 (not shown) connected to a differential amplifier (68) arranged to control an associated reel motor.
Patent GB-326344-A (GB)
Title: Improvements in or relating to line supporting rings for fishing rods
IPC: A01K87/04
Filed: 1929-03-05
Abstract: 326,344. Wilkes & CO., Ltd., H., and Cook, C. A. March 5, 1929. Rods and rod fittings.-A rod ring for holding a porcelain, agate, or like ring comprises one or two separate metal blanks of the form shown in the Figures. Fig. 5 shows a blank having two loops 6 with tails 5 and lugs 7 in staggered relationship, and a narrow integral connecting neck 4 adapted to be folded into the peripheral groove of the ring. Fig. 7 shows two separate blanks shaped to the ring 1, the lugs 9 being bent into the peripheral groove of the ring and the legs 10 soldered together. Blanks each with double legs are also described. Fig. 10 shows a ring with separate blanks 15 united by a spot of solder 17. The shields may be bent into the grooves of the rings or may be attached by a suitable waterproof cement.
Patent GB-697594-A (GB)
Title: Improvements in or relating to the manufacture of metal-glass seals
Inventor: CUTTING ALAN BUTLER
IPC: H01J5/26
Filed: 1952-03-19
Abstract: 697,594. Electron beam apparatus. STANDARD TELEPHONES & CABLES, Ltd. March 19, 1952, No. 7080/52. Class 39(i) In sealing metal discs 2, 3 to either side of a glass collar 8, a spacer 15 of compressed potassium chromate is used, which is afterwards dissolved out in water. The method is used in constructing the type of discharge tube shown, in which an electron beam is projected successively through resonant cavities bounded by metal discs sealed through the envelope wall. The bottom disc 6 may be of ferromagnetic material so as to form a pole-piece of a focusing magnet.
Patent GB-470987-A (GB)
Title: Improvements in or relating to garden and like rakes
IPC: A01D7/10
Filed: 1936-03-10
Abstract: 470,987. Hand rakes. DARLINGTON, M. March 10, 1936, No. 7165. [Class 6 (ii)] Means for cleaning the prongs of a garden or like rake having its prong bar 2 rigidly connected to the handle 6 comprises a bar 7 apertured along its centre line slidably to engage the rake prongs 3 and provided with an upstanding headed stud or rod 9 passing through a guide aperture in the prong bar 2, the upper end of the stud being fitted with a coiled compression spring 10 normally holding up the cleaning bar in inoperative position so that it may be moved down the prongs by depressing the stud or rod. The bar 7 may be flat or of crescent or channel shaped section, and may be provided with holes 8 or slots to receive the prongs 3 and positively locate it for movement along them. In a modification, there is a spring-controlled stud or rod 9 at each end of the bar 7.
Patent GB-547716-A (GB)
Title: Improvements in or relating to actuating mechanism for pressure fluid stop valves
IPC: F16K27/08
Filed: 1941-06-06
Abstract: 547,716. Valve-actuating mechanism. COCKBURNS, Ltd., RODGER, J., and GRANT, T. June 6, 1941, No. 7216. [Class 135] A stop-valve actuating-mechanism comprises an axially movable spindle 4a in screw-threaded engagement with a rotatably-mounted nut 5 supported by a resilient end thrust member. The thrust member comprises a spring 6 arranged between rings 14, 16 loosely surrounding the nut. The ring 14 has a flange 13 capable of limited movement between a stop 22 formed on a bridge 7 supporting the nut and a stop 11 formed on a ring screwed into the bridge. The ring 16 has a flange 15 adapted to co-operate with a stop 12 on the bridge. A ball bearing 17 is arranged between the ring 14 and a flange 18 on the inner end of the nut. A second ball-bearing 19 is arranged between the ring 16 and a shoulder 20 presented by a boss 10a of a hand wheel secured to the outer end of the nut. The inner ball race 19a of this bearing co-operates with the stop 12 to limit the inward movement of the handwheel. When the valve is in an intermediate position the rings 14, 16 rest against the stops 11, 12. When the valve is hardened on its seat the ring 14 lifts away from its stop to stress the spring and hold the valve member resiliently to its seat. When the valve is fully opened the flange 15 lifts away from the stop 12.
Patent GB-908851-A (GB)
Title: Improvements relating to the production of linear co-polyesters of carbonic acid
IPC: C08G63/06
Filed: 1959-03-02
Abstract: Linear polycarbonates, suitable for the manufacture of shaped bodies, filaments, foils and films, are made by reacting diesters of dihydric alcohols and benzene hydroxycarboxylic acids with ester-forming derivatives of carbonic acid.  Specified diesters are those obtained by reaction of 2 mols. of ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycols, thiodiglycol, 1.2- or 1.3-propanediol, 1.3- or 1.4-butanediol, 1.5-pentanediol, 1.6-hexanediol, 2-ethylpropanediol-1.3, quinitol or p-xylylene diol with 1 mol. of vanillic acid, p-hydroxybenzoic acid, 4-hydroxy-3-chloro benzoic acid, 4-hydroxy-3-methyl benzoic acid or 4-hydroxy-3.5-dimethoxy benzoic acid.  Reaction may be effected (a) by passing phosgene into an alkali metal salt of the diester, if desired in the presence of an inert solvent (b) by passing phosgene into a solution of the diester in an organic base (e.g. pyridine) or in a organic solvent (e.g. chloroform) containing an organic base or (c) by reacting the bis-chlorocarbonate of the diester either with the diester in the presence of an acid-binding agent (e.g. pyridine) or with an alkali metal salt of the diester.  In examples polycarbonates are made by reacting (1) ethylene glycol divanillate and phosgene, the product being soluble in cresol, phenol, chlorophenol and chloroform; (2) ethylene glycol-bis-(4.4-dihydroxy) benzoate and phosgene.
Patent GB-825916-A (GB)
Title: Improvements in or relating to coiler mechanism for textile sliver
IPC: B65H54/80
Filed: 1957-05-01
Abstract: 825,916. Coiling textile slivers. SACOLOWELL SHOPS. May 1 1957 [May 22, 1956], No. 7400/59. Divided out of 825,915. Class 120(3) Mechanism for coiling textile slivers comprises a gear 12 with an orifice for depositing sliver in a coil, a number of rollers 29 mounted in rolling contact with the gear for supporting it for rotation in a horizontal plane. The rollers are mounted on stub shafts and have convex peripheries engaging a corresponding race in an upturned rim of the gear. The rim also has teeth 27 which engage those of a driving-pinion 13. A tilting coilertube and a stop-motion as set forth in Specification 825,915 are provided.
Patent GB-181462-A (GB)
Title: Improvements in surgical tension table
IPC: A61H1/02
Filed: 1921-03-10
Abstract: 181,462. Roemer, J. F. March 10, 1921. Tension apparatus. - Apparatus for applying tension to the spine for surgical purposes comprises a supporting-frame fitted with body and leg rests, headengaging harness, and foot harness carried by a frame extension which is adjustable from the side of the table. In the form shown, a tubular rectangular frame 10 carries a padded body rest 14 supported by springs 15, and a leg rest 13 mounted on rollers. An extension 16 of the frame carries an adjustable divided face rest 22 and a standard 23 fitted with an adjustable cross-head 24 to which are secured the adjustable elements 25 of a head-engaging harness 26, 27. An extension 30 at the other end of the main frame is adjustable by means of bevel-gearing 31 and carries a standard 33 connected by springs 36 to ankle bands 35.
Patent GB-639701-A (GB)
Title: Improvements in hydraulic accumulators
IPC: F15B1/08
Filed: 1948-03-13
Abstract: 639,701. Hydraulic accumulators. MACTAGGART, SCOTT, & CO., Ltd., RUSSELL, R. C., and GUNNING, M. F. March 13, 1948, No. 7704. [Class 69 (ii)] An hydraulic accumulator in which the liquid therein is loaded by compressed air comprises a float f sliding in a central perforated guidetube b surmounting a discharge port c closed by a valve ring on the bottom of the float, and a tube j inside the float whereby any liquid therein is expelled by the pressure of the air inside the float during discharging of the accumulator; the upper end of the tube is protected by a cover k having openings k<SP>1</SP>. The accumulator is connected to an air bottle, and the float in its uppermost position closes a valve d to isolate the bottle.
Patent GB-812073-A (GB)
Title: Re-usable coupling for metallic flexible hose
Inventor: MERCER GEORGE KENNETH
IPC: F16L33/26
Filed: 1956-03-13
Abstract: 812,073. Hose couplings. DUNLOP RUBBER CO. Ltd. March 6, 1957 [March 13, 1956], No. 7760/56. Class 99(1). In a reusable hose coupling a sleeve 4 is fitted between a helically corrugated wall 2 and an outer covering 3 of a metallic flexible hose, the covering 3 being clamped to the sleeve by a collar 13 to which is screwed a cylindrical member 9 which abuts the sleeve 4 in fluid tight engagement at one end and is provided with coupling means at the other. The sleeve 4 has corrugations 5 formed on its inner periphery to mate with the corrugations of the hose and the outer periphery is tapered as at 6 so that when the sleeve is screwed to the hose the covering 3 which is of high tensile braided steel wire is forced to ride radially outwards over the tapered surface. The collar 13 is fitted over the hose before the sleeve 4 is attached and is screw-threaded to engage the cylindrical member 9 which has an inner projection 10 to fit inside the sleeve 4 and an end face 11 which abuts a sealing ring 7 engaged in a recess 8 in the opposing face of the sleeve 4. On screwing the collar 13 to the member 9, the braided covering 3 is clamped between the inner tapered surface 14 of the sleeve and the corresponding surface 6, and the abutting faces of sleeve 4 and member 9 are forced together, the sealing ring ensuring fluid tightness. A coupling nut assembly 15 and socket 16 are attached to the outer end of member 9.
Patent GB-297754-A (GB)
Title: Methods of mineral tanning and products obtained thereby
IPC: C14C3/04
Filed: 1927-03-21
Abstract: 297,754. Weber, F. W. March 21, 1927. Tanning with special chemicals; chrome, iron, and like tanning; treatment preliminary to tanning; furs.-Leather is made by precipitating in the hide basic compounds of rare earth metals, such as thorium, cerium, lanthanium, erbium, didymium, scandium, yttrium, and samarium; a double tanning may be effected by treating leather so tanned with compounds of other metals such as iron, chromium, aluminium, or manganese, and one or more compounds of rare earth metals. The precipitate of rare earths may be in the form of a soap. Cerium chloride is to be avoided. A tanning solution may be formed with sodium chloride or sulphate and basic acetates or chlorides of rare earth metals, or a hide treated with soap may be immersed in a solution of the chlorides with the addition of sodium chloride, or sulphate or zinc sulphate. When zinc is used, sodium phosphate solution is added to precipitate the phosphates of the rare earth metals and zinc in the hide. Hides treated with basic acetates of the rare earth metals are further treated with a colloidal basic ferric chloride solution prepared by adding carbonates of rare earth metals to a solution of ferric chloride. Chromium alum may be used similarly to ferric chloride, and treatment with a solution so prepared is followed by a soap treatment. Rare earth metals in solution obtained from monazite sand and containing excess of sodium thiosulphate may be used in conjunction with chromic acid which is reduced by the thiosulphate. A solution obtained by the addition to aluminium sulphate or potassium or sodium alum of rare earth metal carbonates may be used in conjunction with a chromium alum solution. Lactates of the rare earth metals used for deliming may be treated in a reducing bath to form the acetates. The rare earth metal compounds have a sterilizing effect on the leather produced by their use. Pelts may be treated by wetting on the flesh side with a solution of the acetates of rare earth metals, including cerium.
Patent GB-1447567-A (GB)
Title: Controlled circuits for fluid motors
IPC: F16H61/40
Filed: 1974-02-20
Abstract: 1447567 Hydrostatic transmissions POCLAIN 20 Feb 1974 [27 Feb 1973] 7800/74 Heading F2W In a hydrostatic transmission comprising a pump 2 and a motor 1 cavitation is prevented in the motor in the event of it being driven by a load connected to it by a pump 14 which supplies make-up fluid at low pressure to the main line 10b or 11b through a one way valve 17 or 44 respectively. In addition a regulator 9 is provided which can be positioned to disconnect the motor 1 from the pump 2 supply line 10a or 11a and interconnect the motor supply and retain lines 10b, 11b through restrictors 21, 45, a further restrictor 20 being provided in a line 13 to a reservoir 4 so that some of the fluid from the motor (from, e.g. line 11b), which has been heated in passing therethrough, returns to the motor (through line 10b) and some passes through restrictor 20 and line 13 to the reservoir 4, to be made up by cooled fluid from pump 14 via valve 17. A reversing valve 6 is provided for the motor, having a position in which it cuts off the supply to it (to lock the motor with the valve 9 in the illustrated position). A relief valve 8 is provided for the pump 2, and a valve 50 controls the output from pump 14. Instead of the motor 8 being reversible it may only rotate one way in which ease the valve 6 does not require a reversing position, restriction 45 is omitted and line 43 and one-way valve 17 are omitted, line 10b being the motor supply line (Fig. 1, not shown). In a further embodiment (Fig. 5, not shown) the pump and motor are in closed circuit and the pump is reversible and has variable displacement (e.g. swash-plate type). The valve 6 is here omitted. Valves 6 and 9 may be controlled by a single lever, rather than separate levers as shown. In the embodiment shown the pump 14 delivers to the housing of the motor 1 through a line 46 and restrictor 47, this maintaining the temperature of the motor when it is stationary.
Patent GB-755344-A (GB)
Title: A continuous process for the roasting of arsenopyrites ores
IPC: C22B1/10
Filed: 1954-03-17
Abstract: In the continuous process for roasting arsenopyrites of the parent Specification, wherein the ore is preheated in a separate stage by direct heat exchange with a portion of the sulphur dioxide gases from the roasting stage, the preheated ore is passed to the roasting stage, and the remainder of the sulphur dioxide gases are recovered as arsenic-free gas, the preheating is at, at least, 650 DEG C., even though labile sulphur may be distilled from the ore, as well as the arsenic compounds.  This ensures that the roasted ore has an arsenic content less than 0.02 per cent, and is suitable for blast furnaces.
Patent GB-657610-A (GB)
Title: Adjustable book holder for hospital beds
IPC: A47B23/02
Filed: 1949-03-23
Abstract: 657,610. Book-holders. BENGTSSON, S. March 23, 1949, No. 7947. Convention date, March 24, 1948. [Classes 52 (iii) and 52 (v)] A book-supporting plate 2 carries fixed and adjustable ledges 17, 15 which hold the book and is mounted on an adjustable bracket which can be clamped to a bedstead, the bracket comprising an arm 5 telescopically and rotatably mounted in a pillar 3 and having a telescopic and rotatable extension 7 to which is pivoted an arm 9 carrying the plate 2.
Patent GB-354801-A (GB)
Title: Improvements relating to the manufacture of brushes
IPC: A46D1/08
Filed: 1930-03-12
Abstract: 354,801. Fixing bristles in brushes. CAHEN, G. and CHEVALIER, P., 162, Boulevard Magenta, Paris. March 12, 1930, No. 7986. [Class 19.] A brush comprises a cellular structure into which bristles are passed, the walls of the cells being tapered outwardly slightly to wedge bristles against escape. The bristles for a brush are collected in a single set or bunch, and into the bottom of the bunch is inserted a reticulated member, Fig. 1, whereby the bristles are distributed among the different cells wherein they are held preferably by compressing the said member. This member may have the form of a grid of crossed bars 1 .. 4 &c. having a diamond cross section enabling the grid readily to enter the bristle bunch. The lower ends of the bristles are allowed to protrude somewhat below the grid which is then compressed. In a modification, Fig. 4, the cells are arranged quincunxially in a perforated metal plate.
Patent GB-292683-A (GB)
Title: Improvements in means for holding and locking spare wheels and the like on motor vehicles
IPC: B62D43/02
Filed: 1927-03-23
Abstract: 292,683. Kruse, M. March 23, 1927. Securing spare wheels on vehicles.-Means for holding and locking one or more spare wheels, rims, or tyres e in a fixed cradle or recess u on a motor-vehicle comprises a telescopic or extensible stay k, h pivoted at v to the vehicle, means for locking together the members of the telescopic stay, a link a pivoted at b to the vehicle and connected directly or indirectly to the stay, and a hook-shaped device or inverted trough d mounted on the link or on the stay and adapted to embrace the spare wheel &c. The upper member h of the telescopic stay is connected by a ball and socket joint g to the link a, and screws into a nut i at the upper end of the tubular lower member k to lock the hook d in position, the head of the rod h being formed with a square &c. hole o to receive an actuating-key. The releasing movement or extension of the stay may be assisted by a spring l enclosed in a sleeve n. The key hole o is protected by a hinged cap s. The positions of the fixed and movable recesses or hooks may be reversed.