baber/WOPTO huggingface dataset:
Patent GB-637012-A (GB)
Title: Improvements in or relating to systems for the automatic speed control of electric motors
IPC: H02P7/26
Filed: 1945-08-27
Abstract: 637,012. Automatic control systems for D.C. motors. IGRANIC ELECTRIC CO., Ltd. Aug. 27, 1945, No. 21962. Convention date, Aug. 31, 1944. [Class 38 (iv)] The speed of a D.C. motor is maintained at a predetermined level by a variable resistor, in series with the armature, which is set automatically by a reversible motor, the direction of rotation of which is determined by electronic means, by the change in the main motor speed. In the embodiment, the armature 10a of motor 10 is supplied through resistor 13a from busbars L1, L2, across which the shunt field 10b is connected. Cross-head 13c, moved. on a screw shaft 13g by reversible motor 14, varies the proportion of resistor 13a inserted in series with armature 10a. The motor 14 rotates in a direction depending upon which of fields 14b, 14c, is energized by the relays 15, 16, which are excited from the thermionic switching circuit comprising valves 32, 26, 35, 37. The appropriate switching sequence of valves 32, 26, 35, 37 is determined by the value of a D.C. voltage supplied to the thermionic switch from a tachometer generator 11, driven by motor 10. Valves 26, 32 are connected between lines 23, 22, the former having a positive potential and the latter being earthed. Valves 35, 37 are connected between lines 24, 23, the former being positive with respect to, the latter. To operate the system, push-button 18 is closed and relay 17 energized, thus closing contacts 17b, 17c and energizing coil 12a. Switch 12c opens and 12b shuts connecting armature 10a to the mains. The voltage delivered by tachometer 11 is zero and the voltage of grid 26c is therefore negative with respect to cathode 26a which is connected to tapping 28a of speed-adjusting rheostat 28, and the valve 26 conducts only slightly. The voltage of anode 26b and consequently of grid 32c is thus positive, causing valve 32 to conduct, rendering the grid 37c negative and valve 37 non-conducting. Valve 35 passes sufficient current under these conditions to energize coil 21a closing contacts 21 to operate relay 16 through coil 16a. Contacts 16b close, the field 14b is excited and the cross-head 13c moves to the left as the motor 10 accelerates. The tachometer speed, and therefore the voltage of grid 26c, rises, the valve 26 conducts, the potential of anode 26b falls, reducing the current passed by valve 35, until opening of the contacts 21b, and 16b stops motor 14 when the setting of resistor 13a is such as to permit motor 10 to run at the speed corresponding to the position of tapping 28a. If the acceleration of motor 10 does not cease, the curent passed by valve 37 rises to close contacts 20b which cause winding 14c to be energized and cross-head 13c is moved in the reverse direction. Changes in the speed of motor 10 from the datum result in either valve 37 or 35 conducting to cause the appropriate corrective movement of cross-head 13c along resistor 13a. Hunting is eliminated by the short-circuiting of resistors 27, 29, by contacts 15c, 16c when relays 15, 16 are energized.
Patent GB-212191-A (GB)
Title: Improvements relating to electric furnaces
IPC: H05B3/66
Filed: 1923-08-31
Abstract: 212,191. Metropolitan-Vickers Electrical Co., Ltd., (Westinghouse Electric & Manufacturing Co.). Aug. 31, 1923. Resistance furnaces -A furnace is provided with a plurality of relatively thin plates 28 for supporting a resistance member 29 and a plurality of members 18, rigidly fixed tc the walls of the furnace and having flanged por. tions extending into the furnace chamber for supporting the plates 28 against the furnace walls. The furnace lining is formed by a number of hollow vertical tile members 16, and a number of refractory bricks 17 situated between the members 18 which are arranged in vertical and horizontal rows. The plates 2S are provided with grooves or projections for engaging the convolutions of the resistance members. The members 18, Fig. 7, are provided with one or two holes 27 fitted with an L-shaped locking pin to prevent lateral movement of the plates 28. The pin may engage a slot in the plate or the member 18 may have a groove 34 engaging a stepped portion of the plate. Specification 152,686 is referred to.
Patent GB-1008821-A (GB)
Title: Demodulation apparatus for phase-modulated telegraphic code
IPC: H04L27/233
Filed: 1963-05-31
Abstract: 1,008,821. Telegraphy; multiplex radio signalling. KOKUSAI DENSHIN DENWA KABUSHIKI KAISHA. May 31, 1963 [Dec. 19, 1962; Jan. 23, 1963; Feb. 20, 1963], No. 22025/63. Headings H4L and H4P. The invention provides various forms of a demodulator for use in phase-shift telegraphy of the type in which the phase of one bit acts as a reference for the immediately succeeding bit. Examples are given which relate to multiplexing of several transmissions or a single carrier. The apparatus comprises a demodulating circuit I, a phasing control circuit II, a phase memory circuit IV and a regulation circuit III. Three arrangements of these circuits are described in relation to a single channel system, in the first of which the received phase-modulated signal, Fig. 4A (1), is passed to units I and II. In the demodulating circuit the signal passes via a ring modulator controlled by unit III to an integrator which is reset at the end of each received bit under the control of a pulse generator synchronized with and by the received signal. The integrator output, Fig. 4A (3), is differentiated and the resultant signal, Fig. 4A (4), triggers a bi-stable unit to provide the demodulated signal, Fig. 4A (7), and also feeds the memory circuit IV which stores the phase of one bit for control of unit III which provides reference phase signal fed to the ring modulator in unit I during demodulation of the succeeding bit. The regulation unit III comprises a ring modulator which is fed with a frequency equal to that of the received signal and having a constant phase, controlled by unit II which is of known construction. To demodulate a signal in which two channels are contained requires four phase conditions to be distinguished, corresponding to the four combinations of binary digits in the channels. The apparatus is formed similarly to the abovedescribed embodiment, the phasing control II being identical. The regulating circuit, which controls the phase of the reference signals, derives two reference signals, differing by #/2 in phase, which feed the ring modulators in the demodulating circuit I-this circuit comprises two channels each as described in the above embodiment. The phase memory circuit IV provides two outputs whose nature depends on the bit combination just received and demodulated, and which control the output of the regulation circuit III. Operation extended to n channels is described.
Patent GB-442287-A (GB)
Title: Improvements in or relating to the production of slabs or blocks for sound and heat insulation
IPC: C08L97/02
Filed: 1934-07-27
Abstract: Sound-and heat-insulating blocks or slabs are made by mixing long-fibred vegetable materials such as coconut fibres, wood wools, kapok, straw, sugar cane fibres, or reeds with rubber in dispersion or solution or in the swelled state, making porous elastic blocks &c. of the mixture by pressing it into moulds, allowing the blocks &c. to stay in the moulds with or without heating until they are capable of retaining the block-shape-e.g. for 16 to 24 hours without heating or 4 to 6 hours at 100-140 DEG  C.-and removing the blocks &c. Reference has been directed by the Comptroller to Specifications 385,001 and 398,319.
Patent GB-663177-A (GB)
Title: Improvements in or relating to grinding-mill rolls
IPC: B02C4/06
Filed: 1948-08-20
Abstract: Rolls for grinding-mills have imparted to them the roughening which they normally acquire after a run-in period of use by a preliminary roughening treatment before incorporation in the mill.
Patent GB-405621-A (GB)
Title: Improvements in and relating to endless belt conveyors
IPC: B65G21/02
Filed: 1933-08-05
Abstract: 405,621. Endless - belt conveyers. BRIEDEN, K., 52, Cranachstrasse, Bochum, Germany. Aug. 5, 1933, Nos. 22096, 22097, and 22098. Convention dates, Aug. 6, 1932, Nov. 12, 1932, and June 13, 1933. [Class 78 (i).] A supporting frame for an endless-belt conveyer comprises tubular longitudinal members 1 which serve also as conduits for feeding fluid under pressure to apparatus driven thereby. As shown in Fig. 2, the members 1 are clamped within sockets 2 integral with supports which carry the rollers 3, 4. The conduits at each side may carry the same or different fluids, e.g. water and air ; where water is carried, sprinklers 9 may be incorporated for sprinkling the material carried by the conveyer. Side tappings with cocks 8 may be provided for supplying various pieces of apparatus. In cases where the same fluid is carried at both sides, the conduits may be interconnected at the ends and intermediately. Each section 1 may be connected to the adjoining ones by flexible or inflexible joints. In a modification, Fig. 8, the supporting frames 15 for the rollers carry short integral pipe sections 16 with provision at 19 for side tappings, these sections being flexibly connected to the sections 1. Sockets 20, 22 are provided to carry respectively side guards 21. for the upper run and cover plates 23 for the lower run. In this system intermediate roller-carrying or other supports may be provided in which the sections 16 are replaced by supports for the sections 1. The roller-carrying supports may carry also rails for a carriage on which may be mounted, for example, the motor driving the conveyer, in cases where it is necessary to transport this from one end of the conveyer to the other ; in some cases the guards 21 on the members 1 themselves may serve as such rails.
Patent GB-715441-A (GB)
Title: Keying devices
Inventor: JONES WILLIAM FREDERICK
IPC: F16B21/20
Filed: 1952-09-03
Abstract: 715,441. Securing worm gears to shafts. VEEDER-ROOT, Inc. Sept. 3, 1952, No 22156/52 Class 30 (2) A member is secured to a cylindrical shaft by a resilient strip placed therebetween and having, along each side edge, fingers projecting generally longitudinally of the shaft and twisted to produce a plurality of sharp projections which engage the shaft locking means on the strip engaging the member. As shown a bipartite worm 12 is secured to a shaft 10 by bolts 18 and semi - circular resilient strips 24. Fingers 28 at each edge of the strips are twisted, one half in one direction and one half in the other, to provide sharp edges 30 for engagement with the shaft 10 which they score,' at least slightly, on assembly. Fingers 34 are bent up from the strips and engage key-ways 32 in the member 12. A gap 20 is provided for the reception of the strips 24, the radial depth of which is slightly less than the inward extension of the edges 30 from the convex surface of the strips. Shoulders are provided at the ends of the member 12 (Fig. 2. not shown) which closely engage the shaft. The strips could be used with a unitary member slid axially on to a shaft.
Patent GB-598023-A (GB)
Title: Improvements in or relating to compositions suitable for use in the adhesive bondingof surfaces or methods of making the same
IPC: C09J111/00
Filed: 1945-08-29
Abstract: An adhesive composition comprises a dispersion made from neoprene in large aggregate and a resinous material.  The dispersion is preferably made by softening sheet neoprene on a mixer with a little toluene, adding gum rosin and then zinc or calcium resinate, or the glyceryl ester of rosin, or hydrogenated rosin, followed by caustic soda solution, colloidal aluminium hydroxide and casein in that order.  Neoprene latex obtained by the polymerisation of chloroprene in situ, for example by the methods described in Specification 387,340 may also be added.ALSO:An adhesive composition comprises a dispersion made from neoprene in large aggregate and a resinous material; if neoprene latex obtained by the polymerisation of chloroprene in situ, for example, by the methods described in Specification 387,340, are also present then the dispersion may be obtained in any known way: if neoprene latex is not added, then the neoprene in large aggregate and the resinous material are mixed and emulsified with a colloidal inorganic material and an organic material.  The dispersion is preferably obtained by softening sheet neoprene on a mixer with a little toluene, adding gum rosin and then zinc or calcium resinate, or the glyceryl ester of rosin, or hydrogenated rosin followed by caustic soda solution, colloidal aluminium hydroxide and casein in that order.  The adhesive may be used for joining shoe uppers.
Patent GB-593752-A (GB)
Title: Improvements in mining machines
IPC: E21C27/36
Filed: 1944-11-13
Abstract: 593,752. Mining-machines. MAVOR & COULSON, Ltd., and MAVOR, J. B. Nov. 13, 1944, No. 22294. [Class 68 (i)] Relates to a mining-machine of the type which cuts coal from a seam by the direct action of a wedge-like head or heads, and comprises a body adapted to be advanced on the floor and carrying a head with limited to- and-fro movement lengthwise of the body, a fluid-pressure unit on the body co-operating with spring means to impart a percussive action to the head as the machine advances. As shown, a three-wheeled carriage 1 is moved and steered by a hand lever 3, and carries a cutting head, the frame 8 of the latter carrying guide rods 15 slidable in a bearing plate 16 on the carriage, a compressed-air hammer 19 acts on the rear of the frame 8, springs 18 bearing against collars 17 on the rods 15 returning the frame. On the frame 8 are mounted a component 4 pivoted about a shaft 7 to move between platforms 14 and carrying vertical wedge-cutters 9, 10 acting in the same vertical plane, an upper component 5 pivoted at 12 and provided with vertical and horizontal edges 11, 11A for removing coal near the roof, and a lower component 6 with vertical and horizontal edges 13, 13A for removing coal from the floor, the component 6 also acting to move the coal upwardly and laterally on to a conveyer &c. Spring and screw means act to move the components 4, 5 about their pivots, stops limiting the movement. In another form, the carriage is mounted on endless tracks and carries driving gear. The machine may also be adapted for attachment to rope haulage gear.
Patent GB-745462-A (GB)
Title: Hydraulic classifier
Inventor: COULTER HAROLD BOYD
IPC: B03B5/40
Filed: 1953-08-13
Abstract: 745,462. Hydraulic classifier. DORR-OLIVER, Inc., [formerly DORR CO.]. Nov. 18, 1953 [Aug. 13, 1953], No. 22366/53. Class 82(2). [Also in Group XXIX] Particles are classified by being subjected in a liquid to an upward current whilst at the same time they are subjected to mechanical vibration. As shown, the mixed particles are supplied at F, the upward current of water being obtained by a pipe 16 discharging jets against the tank bottom 11. This latter is vibrated with linear motion, together, in this embodiment, with the tank side and connected to the non-vibrating portions by resilient connections 12, 13. The coarse particles are removed over a weir 18 and the fine particles over a weir 17. The separation size (or " cut ") of the apparatus is governed by the super-elevation S of the water in the chamber 19. The overflow pipe 20 is provided with removable rings 21 for adjustment of this distance. Many embodiments of the apparatus are disclosed including one having a control system (see Group XXIX) in which a pipe in which the superelevation is maintained, controls the discharge valve of the coarse particles outlet, thus controlling the " cut." An embodiment in which the overflowing particles are further classified by horizontally spaced vertical baffles is also disclosed. Instead of a pipe to supply the upward current, a perforate vibrating bottom through which the upward current may be maintained, can be employed.
Patent GB-517444-A (GB)
Title: Improvements in starting devices for internal combustion engines
IPC: F02N15/02
Filed: 1938-07-28
Abstract: 517,444. Turning-gear. BOSCH GES., R., (formerly BOSCH AKT.-GES., R.). July 28, 1938, No. 22431. Convention date, July 28, 1937. [Class 7 (v)] In an engine starter consisting in an auxiliary engine 13 which can be started by a dynamotor 10 through a releasable clutch 47, 48 and which subsequently starts the main engine 11 by driving through transmission gearing disposed between the dynamotor and the auxiliary engine, and through a second releasable clutch 26, the dynamotor 10 is mounted directly on the casing of the main engine and is provided with a hollow armature shaft 15 in which clutch-operating mechanism is accommodated. As shown, the casings 10, 12 of the dynamotor and the transmission gearing are fitted between the casings 11, 13 of the main and auxiliary engines. Within the hollow armature shaft 15 is a disc 19 integral with a sleeve 20 in which is splined a longitudinal displaceable shaft 21. On the shaft 21' is mounted a'multi-plate clutch 22, the outer member of which is formed as a dog-clutch member 26 for engagement with the shaft of the main engine. The dog clutch 26 is moved into engagement by a spring 32 and is disengageable by an electromagnet 30. The transmission gearing between the dynamotor and the auxiliary engine comprises a toothed wheel 41, which is rotatable on an eccentric drum 40 on the shaft 39 of the auxiliary engine and meshes with a fixed tooth ring 43 and with a rotatable toothed ring 44 connected through a free-wheel roller clutch 46 with a disc 33 displaceable on splines on the shaft 21. Friction clutch faces 47, 48 are,formed on the drum 40 and disc 33, and the disc 33 is connected to a disc 37 on the shaft 21 by toggle levers 34 drawn together by a spring 38. In operation, a switch 53, Fig. 2, engages contacts 50, 51 connected to the series field 14 of the dynamotor, which is driven as a motor, and to the electromagnet 30, whereby the dog clutch 26 is disengaged and the clutch 47, 48 engaged. The auxiliary engine shaft 39 is then driven from the dynamotor through the shaft 21 and clutch 47, 48. When the auxiliary 'engine starts, it drives the dynamotor as a generator, the gearing 41-44 running idly on the free-wheel 46. During these operations, the toggle levers 34 are flexed inwards under the pressure of the electromagnet. - On moving the switch to contacts 51, 52, the series field 14 is cut out and replaced by a shunt winding 14a. The switch is then moved on to contact 52 only, cutting out the electromagnet 30 and allowing the spring 32 to engage the dog clutch 26 with the main engine shaft and to disengage the clutch 47, 48, so that the main engine is started from the auxiliary engine through the gearing 41, 44, free-wheel 46, shaft 21 and clutches 22, 26. When the main engine starts, the toggle levers 34 under centrifugal action move the disc 33 to the left, clear of the freewheel rollers 46, so that the drive between shafts 21, 39 is disengaged. The electromagnet 30 may be replaced by a hand-actuated lever. Specifications 485,124 and 517,445 are referred to.
Patent GB-174656-A (GB)
Title: Improved manufacture of phenolic condensation products
IPC: C08G8/04
Filed: 1920-07-29
Abstract: Moulded phenol-methylene condensation products are prepared according to the process described in Specification 146,159, employing as a constituent of the binder a fusible condensation product containing two and a third to three and a half (preferably two and a half) phenolic groups to each methylene group.  The proportions of the methylene compound which comprises the other constituent of the binder are then selected to give to the binder as a whole one methylene group to each phenolic group present.  A slowly volatile hydrocarbon solvent such as creosote oil may be incorporated in the mixture.  Specification 9291/14 also is referred to.
Patent GB-443779-A (GB)
Title: Improvements in and relating to the preservation of rubber
IPC: C08K5/18
Filed: 1934-08-03
Abstract: Homologues of 4-4<1>-dimethoxydiphenylamine are obtained as follows: ethylating 4 : 4<1>-dihydroxydiphenylamine with ethyl bromide in caustic soda; interacting hydroquinone and p-phenetidine, and then methylating with dimethylsulphate in caustic soda; methylating 4 : 4<1>-dihydroxy-2-methyl-diphenylamine with dimethylsulphate in caustic soda; methylating or ethylating 4 : 4-dihydroxy-3-methyldiphenylamine with dimethylsulphate or ethyl bromide in caustic soda; treating 4 : 4<1>-dihydroxy-diphenylamine with isopropylbromide in caustic soda; and by treating 4 : 4<1>-dihydroxy-3 : 3<1>-dimethyldiphenylamine with dimethyl sulphate and sodium amyloxide in boiling amyl alcohol.  The 4 : 4<1>-dihydroxy-3 : 3<1>-dimethyldiphenylamine is obtained on reducing the indophenol obtained by treating a mixture of 5-amino-o-cresol and o-cresol with sodium hypochlorite.  Specifications 434,951, [Group V], and 435,024 are referred to.  Reference has been directed by the Comptroller to Specification 435,024.ALSO:The resistance of rubber to flex-cracking and oxidation is improved by incorporating in the rubber mix before vulcanization a homologue of 4-41-dimethoxydiphenylamine in which one or more hydrogen atoms attached to carbon are replaced by methyl groups, or in the case of the methoxy carbon atoms by alkyl groups having not more than six carbon atoms.  Other anti-oxidants may be added.  Examples of the preparation and use of these homologues are given.  Specifications 434,951 and 435,024 are referred to.  Reference has been directed by the Comptroller to Specification 435,024.
Patent GB-1335902-A (GB)
Title: Process and apparatus for the production of deformation images
IPC: G03G16/00
Filed: 1971-04-19
Abstract: 1335902 Deformation imaging KALLE A G 19 April 1971 [2 March 1970] 22724/71 Heading G2H The production of a deformation image by heatsoftening a thermoplastic layer 2 bearing a charge image is effected in two successive stages: slowly by a first heat source 1 (heating for example to 75‹C) and rapidly by a second heat source 6 (heating for example to 125‹C). The thermoplastic layer may be dielectric or photo-conductive, and may comprise styrene polymer or copolymer. The first heating may be direct heating by heated gas or may be by means of a suction plate heated by resistance heating or heated liquid or gas. The second heating may be by a lamp, ceramic radiator, resistance-heated plate, or recycled heated gas; and may be combined with a screen or shutter The first heating source may be stationary and may be associated with a thermoplastic layer in the form of a sheet Fig. 1 or web Fig. 4 (not shown) Alternatively, it may be moved together with a thermoplastic layer in the form of a web through successive charging, exposure and second heating stations e.g. along a circular path, Fig.2, or a linear path, Fig.3.
Patent GB-465818-A (GB)
Title: Improvements in sports shirts and like garments with attached collar
IPC: A41B3/02
Filed: 1935-08-13
Abstract: 465,818. Shirts &c. with attached collars. KRATTER, K. Aug. 13, 1935, No. 22794. Void. Convention date, June 17. [Class 141] The collar band of a sports shirt or like garment with attached collar is provided with tabs e, f, which are narrower than the collar band where they spring from the wing of the shirt, as at f the tab e passing through a slot in the collar band, and the tabs e, f, being adjustably secured to the collar band e.g. by means of buttons and button-holes.
Patent GB-1000077-A (GB)
Title: Method of water treatment and apparatus therefor
IPC: B01J47/02
Filed: 1964-06-02
Abstract: <PICT:1000077/C1/1> Boiler feed water is treated with phosphate in vessel 10, by sodium-exchanging ion-exchanger in column 12 and by a compound which induces the permessive dose of calcium ions in vessel 14.