baber/WOPTO huggingface dataset:
Patent GB-304733-A (GB)
Title: Improvements in or relating to railway control systems
IPC: B61L3/22
Filed: 1929-01-24
Abstract: 304,733. General Railway Signal Co., (Assignees of Hailes, W. D.). Jan. 25, 1928, [Convention date]. Selective signalling apparatus.-In a system for the continuous inductive control of apparatus on trains, coded energy derived from a direct current source is supplied as distinguished from alternating current energy as in the system described in Specification 299,304. The track circuit relay TR<0> is normally supplied from battery 6 connected across the exit end of the section I but when the section is occupied the motor relay MR becomes energized, battery 6 is cut out and a code battery 7 is connected to the rails 1 through one of the coding-contacts 10, 11 as selected by the track relay for the advance section J according to the presence or absence of a train therein. The coding-contacts 10, 11 are driven by a coding motor W and supply current either directly from battery 7 or in series with a vibrating contact breaker or by charge and discharge of a condenser 46, as in Fig. 7, connected to the track rails or a condenser 40, as in Fig. 6 connected through a transformer 41, to the track rails. The codes described consist of a clear signal given by regularly repeated short impulses of current, a caution signal given by a maintained long impulse followed by a long interval and a danger signal given by absence of current or by steady current. The train carried apparatus comprises inductive collector coils 16 connected to a two valve amplifying device through a transformer T. The plate circuit of the first valve 19 includes a feed-back coil FB for feeding energy to the grid circuit of this valve. Reactances 31, 32 are included in the respective plate circuits and tuning condensers 33, 38 in the grid circuits. A tuning condenser 36 is inserted in the circuit of the coding primary relay CPR. The change of flux through the coils 16 due to every make or break of the coded current supplied to the track rails shock-excites the receiving circuits so as to cause the relay CPR to pick up its armature, to hold it for a brief time and drop it as is indicated for the " clear " code G and " caution " code Y, on Fig. 3, on which the chain dotted lines represent the pick up value of the relay current. For a clear signal the relay CPR continually picks up and releases its armature while for a caution signal pick up and immediate release occur only at long intervals and for a danger signal the armature remains unaffected. The decoding apparatus closely resembles that described in Specification 299,304 but, as described, is arranged for three signals only, with train-stopping valve and resetting and acknowledging switches. Other codes with suitably modified decoding apparatus may be used.
Patent GB-489557-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B17/04
Filed: 1937-01-28
Abstract: 489,557. Collapsable cameras. BILLING, N. P. Jan. 28, 1937, No. 2552. [Class 98 (i)] A collapsable camera comprises a base or frame forming at least part of the rear end of the camera body, a front end wall, and at least 4 side walls each of which is formed as a substantially rigid plate constituting one complete wall of the camera, the side walls and at least one end wall being pivotally interconnected along contiguous edges enabling them to fold into positions adjacent and parallel to one another, means being provided to hold the side and end walls rigidly in extended position. In the form shown, the sides 3, 4, and the remaining sides (not shown) are hinged on screws 8 on the frame 6 constituting the back of the camera. The edges of the sides and the base are provided with flanges 10, 11 to form light traps when the camera is extended. The sides. are held in place by the camera front 13 which is hinged to the side 4 so as to pivot outwards and carries a lens provided with a hinged cap 26. The camera back may be of the form described in Specification 465,102 and has a focusing screen with a cover 43 pivoted on the base and bearing a slide 44 which accommodates a viewing lens 48. A view-finder comprising a frame with cross wires having a transparent bead at the intersection, may be hinged to the base alongside one of the side walls. A support 37 threaded to receive a tripod head is secured to the base 6.
Patent GB-1437634-A (GB)
Title: Blood heat and component exchange device
IPC: A61M1/22
Filed: 1973-04-27
Abstract: 1437634 Treating blood GENERAL ELECTRIC CO 27 April 1973 [27 April 1972] 02657/76 Divided out of 1437633 Heading A5R [Also in Division B1] A blood heat-exchange and component transfer device for artificial kidneys or blood oxygenators comprises, in a heat exchange subassembly, a frame closed at the top by a membrane and at the bottom by a membrane plus an elastically supported sheet-like element, a heat source or sink being in contact with a membrane, and in a component transfer assembly a frame closed top and bottom by membranes, the other side of the membranes forming, with closure means, a blood component exchange fluid flow chamber; no one assembly being used for both heat and component exchange. The two flow path device of Specification 1437633 is disclaimed.
Patent GB-1224421-A (GB)
Title: Borescope apparatus
IPC: H05B41/32
Filed: 1969-01-17
Abstract: 1,224,421. Control systems for discharge lamps. LENOX INSTRUMENT CO. 17 Jan., 1969 [19 April, 1968], No. 2887/69. Heading H2H. [Also in Division G2] Borescope apparatus comprises a discharge lamp by means of which the walls of a chamber may be scanned and photographed, the lamp being supplied with a succession of low energy pulses during viewing but, during photography, is supplied by a single high energy pulse. A discharge lamp 77 is supplied from an A.C. source 51, 52 either by way of a transformer 54, rectifier 69 and capacitors 73 or by way of transformer 56, rectifier 70 and capacitors 74. Ignition pulses for the lamp 77 are produced at the supply frequency by means of a thyristor 64 which conducts and discharges a capacitor 66 through the primary winding of a transformer 67, the secondary winding of which transformer supplier the ignition pulses to the lamp. With a relay 85 unoperated and its contacts 68, 82 in the positions shown the capacitors 73 will discharge through the lamp 77 each time an ignition pulse is applied thereto. Thus the lamp is energized with a succesion of low energy pulses for viewing purposes. When it is desired to photograph the chamber wall a camera contact 86 closes momentarily, energizing a relay 87 and, by way of its contact 88, relay 85 thereby changing the positions of contacts 68, 82. With the contact 82 in this position and upon the application to the lamp 77 of an ignition pulse the capacitors 74 discharge through the lamp thereby producing a high energy pulse therein, the illumination provided by the lamp being limited to a single flash since the contacts 89 are closed for an exceedingly short period. If desired the switching function may be carried out by semi-conductor devices.
Patent GB-1242611-A (GB)
Title: Improvements in or relating to linear measuring apparatus
IPC: G01B5/00
Filed: 1968-06-26
Abstract: 1,242,611. Linear gauges. CROUNSE CORP. June 26, 1968 [June 26, 1967], No.30374/68. Heading G1M. [Also in Division F2] A ground and polished granite block 10, Figs. 1 and 2 supports a granite member 16 provided with independently regulatable air bearings 15 (see also Division F2) so that the member, which is attached to stirrups 18 provided with air bearings 22, 24 may be moved in a frictionless manner along a measuring guide member 20 in the direction of the Z axis. A measuring probe 2, mounted on a hydraulically movable post 26 backed up by airpressure, is attached to a vertically slidable carriage 28 itself mounted on a horizontally slidable member 30 so that probe movement relative to an article 8 can also take place along the X and Y axes. The granite member 16 is moved by a hydraulic/air ram 34 connected by a clamp 40 to an endless band 38 and pulleys 42, 44 mounted on the top of the guide 20. These pulleys are fixed to larger pulleys 46, 50 supporting an endless band 48 movably connected to the member 16. The probe support member 30 is itself supported by air bearings 58, 60, 62, Figs. 2 and (4) and is held vertical and prevented from turning by air bearings 66, 68, 70 and 72. Control of air to the bearing 72 allows the member 30 to be set to precise perpendicularity and the member may be moved parallel to the X axis by a hydraulic/air ram and belts contained within the cavity 76 of the block 10. The carriage 28, Fig. 2 is also provided with air bearings 84, 86, 90, 92. The distance measuring means is a known electrical digital read-out system employing a scale 114 and slider 116, Fig.2 for the Z axis, a scale 118 and slider 120 for the X axis, and a scale 124 and slider 126 attached to the carriage 28. Various types of probes such as optical, feeler or electrical contact types Figs. 8, 9, and 10 (not shown). In Fig.11 however an optical telescope probe has a housing 150 universally jointed at 148 to its end, the housing containing a pair of gauges 152, 154 with horizontal and vertical deviation detecting feelers 156, 157 and a rod 142 supporting a gauge plug 144 by means of an air bearing. In Figs. 5, 6 (not shown) and Fig. 7  the apparatus employs an air bearing supported granite block 158 as before which itself supports rotatable table 166 mounted on hand regulatable air bearings 168 which rotate with the table. Air bearings 182 give lateral support and the table is strengthened by a casting 164 and restrained by a casting 170. Also in Figs. 5 and 6 (not shown) is an optical read-out means comprising a light source (184) adjacent to a scale (186) rotatable with the granite member (166), an image of the scale (186) being received by a lens (190) and transmitted optically to the housing (192) and viewing screen (194). A hydraulic/air system comprising three units 196, 198 and 200 for producing the X, Y, Z movements of the probe is shown in Fig.14, the system supplying high or low-pressure air behind the hydraulic rams to speed up the probe movement when required (see also Division F2).
Patent GB-134140-A (GB)
Title: Travelling Apparatus for Cleaning Sewer Basins.
Inventor: OTTERSON GEORGE WASHINGTON
IPC: E03F7/10
Filed: 1919-02-07
Abstract: 134,140. Otterson, G. W. Feb. 7, 1919. Pneumatic collectors.-Consists in a travelling apparatus for emptying sewer basins, comprising a motor-vehicle. fitted with a pump for operating an hydraulic ejector which is carried by extensible pipes and is lowered into the catch-pit, the sewerage being ejected into a tank on the vehicle. The tank is fitted with swinging baffle-plates forming settling-chambers, and with a clear-water channel forming a supply for the pump. The tank is pivoted to the frame of the vehicle and is emptied by raising one end, the baffle-plates swinging to release the solid matter. An automatic make-and-break joint is provided in the water-supply pipe to the pump, and an auxiliary jet is provided for agitating the contents of the pit. The pump 26 is driven from the engine and is supplied with water through a pipe 35 from a clear-water channel in the tank, which is formed by a longitudinal partition near one side. The connexion between the pipe 35 and the tank is shown in Fig. 4. The tank is fitted with a socket 33 in which a spring-pressed spigot 31 carried by the pipe engages. The pump supplies water to an ejector 38 by a flexible pipe 27. The ejector comprises a nozzle 40, Fig. 8, and a constricted throat 41, the sewage entering by an orifice 38 fitted with a depending pipe 42. The sewage is forced up a telescopic pipe 36 into the tank, where the solid matter settles, the clear water being fed again to the pipe. Excess of clear water flows through an overflow 56 to the catch-pit by an adjustable spout 65. The baffles in the tank are pivoted to transverse top rods 12 and have staggered openings. The end baffle is provided with a number of small sieve perforations. The tail-gate 8 is similarly pivoted and is released by undoing the clamps 14 and by operating a rock-shaft 15 fitted with holding-dogs 21 from the front of the vehicle by means of a hand-lever. The tank is tilted for emptying by a winch 4. The ejector is adjustably carried by a guide 48 carried on a slidable horizontal arm. The ejector is raised and lowered by a winch 45. Additional settling- tanks may be provided on trailing vehicles. An agitator comprises a small hose fitted with a nozzle 59.
Patent GB-726076-A (GB)
Title: Process for polymerization of butadiene in the presence of an oil extender
Inventor: WILLIAMS HARRY LEVERNE
IPC: C08F36/04
Filed: 1953-02-03
Abstract: Butadiene is polymerized or copolymerized in the presence of an Alfin catalyst and a diluent using a quantity of light lubricating p  oil low in impurities and equal in amount to the weight of monomer. Sodium isopropoxide and allyl sodium is the specified catalyst and n-pentane the diluent, although the diluent may be material normally present in butadiene extraction, with feed which comprises about 10 per cent butadiene, 53 per cent n-butylenes, 18 per cent butanes, 10 per cent isobutylene and 1 per cent C3 and C5 components.  Styrene is specified as a copolymerizable monomer.  It is preferred to use the catalyst in a quantity in excess of the amount required for an equivalent conversion in the absence of the oil.
Patent GB-1090718-A (GB)
Title: Alkanophenone derivatives
IPC: C07C45/29
Filed: 1966-01-24
Abstract: The invention comprises compounds of formula <FORM:1090718/C2/1> wherein R is a C1- 5 alkyl radical or a C3- 25 radical of formula -CH2CH=CR3R4 or -CH2C­C-R5 wherein each of R3, R4 and R5 is a hydrogen atom or a hydrocarbonyl group, R1 is a hydrogen atom or a C1- 5 alkyl group, R2 is a hydrogen atom or a C1- 5 alkyl, halo-C1- 5-alkyl, cycloalkyl, aryl or aralkyl group wherein any aryl rings may be substituted by a halogen atom or a C1- 5 alkyl group, each X is a hydrogen or halogen atom or a C1- 5 alkyl or trihalomethyl group or two adjacent X's form an acyclic hydrocarbon chain, and n is 1-4, and their preparation by (a) etherification to form the group -OR, (b) reaction of an alkanophenone ether with paraformaldehyde and the acid addition salt of a secondary amine and decomposing the amine formed, optionally after quaternization, or (c) successive treatment of an etherified alkanophenone with a halogenating agent and a dehydrohalogenating agent.  21 - Trifluoromethyl - 41 - allyloxy - butyrophenone is prepared by reaction of 3-trifluoromethyl-4-bromo-phenol with allyl bromide to give its allyl ether, reacting this with magnesium metal in ether and butyraldehyde to give 3-trifluormethyl - 4 - (1 - hydroxybutyl) - phenyl allyl ether and oxidizing this with chromium trioxide.  21 - Chloro - 41 - methoxy - propiophenone is prepared by etherification with dimethyl sulphate.  The compounds of the invention have diuretric and saluretric activity and may be used in pharmaceutical compositions in combination with a carrier, for example in forms suitable for oral or parenteral administration.
Patent GB-462771-A (GB)
Title: Improvements in or relating to doors for bakers' or other ovens
IPC: A21B3/02
Filed: 1936-02-03
Abstract: 462,771. Door-operating appliances; hinges. CROZIER, W. H. Feb. 3, 1936, No. 3211. [Classes 65 (i) and 65 (ii)] [Also in Group XII] In a drop-down door 12 for bakers' and other ovens, the hinge-pins 24 engage in enlarged holes in brackets 25 to permit the unrestricted seating of the door under the action of double-acting spring-loaded dashpots 28 which absorb shocks as the door is moved to either its open or closed position and exert positive pressure, when the door is closed, along a line intersecting the area bounded by the sealing face of the latter. The dashpots are pivoted to the brackets 25 and to the door 12 at 27, 30 respectively, and each is fitted with a plunger 29 enclosing a helical spring 31 and arranged as a fairly close sliding fit in the pot 28. A solid rod 32 is fitted inside the spring 31 so as to obtain a more complete displacement of air from the dashpot when the spring is fully compressed. The door handle 20 is formed with finger-width grooves 22 and resilient buffer-blocks 33, carried by the dashpot casings, support the door in the open position. To reduce the height of a decker-oven structure, the thickness of the door decreases, as shown in Fig. 2, from top to bottom.
Patent GB-566970-A (GB)
Title: Improvements in alternating current bridge circuits
IPC: G01R27/02
Filed: 1943-02-19
Abstract: 566,970. Measuring impedances. MAYO, C. G. Feb. 19, 1943, No. 3212/44. Divided out of 566,945, [Group XL]. [Class 38 (ii)] [Also in Group XXXVI] An A.C. bridge circuit especially for operation at high frequencies, comprises an input transformer 4, Fig. 1, feeding A.C. to one diagonal and an output transformer 6 whose primary winding constitutes the ratio arms of the bridge and is designed to have low leakage inductance between its sections. The input transformer 4 has its secondary winding similarly designed, and tappings are provided on both transformers whereby the input voltage and the ratio arms can be varied. The other two arms of the bridge are constituted by the unknown impedance 11 and by standard impedance comprising variable capacity 9 coarsely-adjustable resistance 10 and a finely-adjustable resistance 1, 2, 3 of the kind described in Specification 566,945. An indicating device is connected to the terminals 13 of the secondary coil of the transformer 6. Both transformers 4, 6 have their inner coils (untapped) wound on ring cores, Figs. 5 and 6, which are formed of thin strip metal, and are screened by two channelsection rings 31, 32 soldered together at their outer rims, and with a gap at their inner rims. One end of each inner coil is soldered to its screen at 33, and the other end brought out through a screened sleeve 34. The outer coils are formed of very thin copper or aluminium strip separated by very thin insulation. These are wound through the central apertures of the annuli and over formers 35 embracing the screens and the inner coils at points diametrically opposite to the sleeves 34. Tappings are taken from selected turns of both outer coils and the leads 23, 24 also in strip form are taken to bus-bars for connection of the unknown impedance ; and other leads 27, 28 connect to the bus-bars for the standard impedance, in such fashion that the go and return leads are closely adjacent and do not create any substantial leakage field. The outer coils are shown expanded and in section in Fig. 5, and only the parts above the inner coils are shown. They are held down by an insulating press plate 37 and are secured by bindings.
Patent GB-1331416-A (GB)
Title: Method of preparing a liquid dispersion and processes and products employing the same
IPC: D21H23/24
Filed: 1972-01-24
Abstract: 1331416 Microcapsular preparations NA-  TIONAL CASH REGISTER CO 24 Jan 1972 [12 Feb 1971] 3242/72 Addition to 1197406 Heading B8C [Also in Division D2] A liquid dispersion in which minute polymeric capsules are bound together with cellulosic fibres is prepared by dispersing by agitation the fibres and minute droplets of a liquid nucleus material in a solution of a film-forming polymeric material, effecting liquid-liquid phase separation in the solution, and continuing the agitation of the solution to disperse therein the emergent polymer-rich liquid phase such that it  deposits on and around the droplets of liquid  nucleus material to form capsular walls there-  around and binds the formed capsules to the  fibres. The liquid nucleus material may comprise a coloured, chromogenic, odorous, or medicinal material. The film-forming material may be of the kind specified in Specification 1,197,406.
Patent GB-389627-A (GB)
Title: An improved combined set-square and protractor
IPC: B43L7/027
Filed: 1932-02-04
Abstract: 389,627. Setsquares. MILLER, A. H., Preston Park, Prestonpans, East Lothian. Feb. 4, 1932, No. 3316. [Class 97 (iii).] A setsquare comprises a quadrilateral sheet, preferably of transparent or translucent material, having angles of 90‹, 135‹, 75‹, and 60‹. Tn the form shown, an arcuate slot E struck from the intersection F of two lines GH, JK, parallel to the sides BC, DC, is graduated as a protractor. One or more of the edges may be graduated.
Patent GB-1459868-A (GB)
Title: Centrally controlled telecommunications exchange systems
IPC: H04Q3/00
Filed: 1974-01-25
Abstract: 1459868 Automatic exchange systems SIEMENS AG 25 Jan 1974 [30 Jan 1973] 03456/74 Heading H4K In an exchange in which a single scanner is used to scan all the exchange circuits having network appearances means are provided whereby different types of circuit are assigned different priorities. The exchange is a PBX having a known switching network arranged according to the revised trunking scheme and wherein the number of switching stages through which a connection is established depends on the network appearances of the subscribers. All requests for service are initiated by a SPC processor P which has access to the exchange circuits via priority circuits which are each coupled to all the exchange circuits having a respective priority. Hence if the processor requires a scan to be made to identify any circuits of a particular priority which may be free for use, or are in a calling condition it sends a signal to the corresponding priority circuit which causes a mark to be extended to all the circuits of the corresponding priority. The scanner is then caused to scan all the exchange circuits to identify all the circuits with the particular priority requiring attention. Some exchange circuits may be assigned two different priorities by coupling them to two different priority circuits, e.g. main exchange junctions seized in an incoming direction require more urgent attention than junctions seized in an outgoing direction. To this end, the processor responds to a service request from a main exchange junctor to send a signal to a first priority circuit which causes all exchange junctors seized in the incoming direction that require attention to extend a request to the scanner. Subsequent to this scan, the processor enables a second priority circuit to cause all exchange junctors seized in the outgoing direction that require attention to issue a request to the scanner. Different subscribers may be assigned different priorities. There is also described an arrangement for selecting a free register which is closest, in terms of the length of the switching network path required, to the calling subscriber, this part of the discription being substantially the same as that of Specification 1,453,518.
Patent GB-247226-A (GB)
Title: Improvements in the synthesis of ammonia
Inventor: UHDE FRIEDRICH
IPC: C01C1/04
Filed: 1926-02-08
Abstract: 247,226. Uhde, F. Feb. 9, 1925, [Convention date]. Hydrogen ; nitrogen.-Hydrogen or nitrogen is purified through a solution of an alkali or alkaline.earth metal in a molten alkali amide. The gases may be treated at a temperature of 200- 300‹ C. The Specification as open to inspection under Sect. 91 (3) (a) states that the bases may be treated under pressure. This subject-matter does not appear in the Specification as accepted.
Patent GB-324814-A (GB)
Title: An improved collapsible and portable structure made of metal arches covered with canvas
IPC: E04B1/344
Filed: 1929-02-02
Abstract: 324,814. Smith & Co. (London, E.), Ltd., J., and Smith, W. E. Feb. 2, 1929. Portable shelters. -A collapsable structure of the type formed of three or more arches connected at their tops by ridge-pieces, has the ridge-pieces d between adjacent arches formed in two parts, one end of each being hinged on to an arch while the other ends are hingedly connected together at e in the manner described in Specification 290,938. The hinging sleeves f of the ridge-pieces are placed on each side of the centre line between collars g. Longitudinal horizontal connectors h, Fig. 3, are also provided for the feet of the arches and these are hinged to cross stays c or to outstanding lugs on the uprights b, and are hingedly connected together.