baber/WOPTO huggingface dataset:
Patent GB-213238-A (GB)
Title: Improvements in slide rules or the like calculators
IPC: G06G1/04
Filed: 1924-03-07
Abstract: 213,238. Frappant Akt.-Ges. fiir Prõzisions und Feinmechanik. March 24, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Slide-rules of circular form. The scale-bearing members are constituted by concentric rings lying in the same plane and each serving to support an adjacent one. In the form shown in Fig. 1 the casing 1 supports the fixed ring 2, and the rings 3, 4, 5 are rotatably mounted by means of resilient discs or spiders 8, 9, 10 on a pivot 6. The arms of the supporting discs extend beyond each ring so as to bear resiliently against the under surface of the next outer ring. In the construction shown in Figs. 3 and 4 the spiders are replaced by bent spring legs 11 secured at intervals to the rings and provided with the lateral extensions 17 to bear against the adjacent ring. A block 16 arranged between the legs serves to resist downward movement of the ring under the pressure of the setting stylus. In order to make up for any lack of accuracy in the circularity ot the rings an arrangement of eccentric mounting may be adopted.
Patent GB-1036544-A (GB)
Title: Preparation of phosphoric acid having a high polyphosphate content
IPC: C01B25/24
Filed: 1965-02-10
Abstract: Phosphoric acid having a high polyphosphate content is prepared in a continuous process by feeding orthophosphoric acid and a heating gas into an evaporating zone under conditions such that substantially all the orthophosphoric acid is entrained in the heating gas, and passing the <PICT:1036544/C1/1> heating gas containing the acid into a second zone which is maintained under conditions such that the acid coalesces to form droplets of phosphoric acid having a high polyphosphate content and removing the phosphoric acid and gas from the second zone. The retention time of phosphoric acid in evaporation zone is not more than five seconds.  The orthophosphoric acid may be wet process acid containing 50-55% by weight of P2O5. The temperature of the heating gas which enters the evaporating zone at a velocity of 15-75 m/sec. may be 315-980 DEG  C. and the temperature of the gas and entrained acid as it leaves may be 245-315 DEG  C.  The temperature in the second zone should be at least 245 DEG  C.  The evaporation zone is formed by the inner walls of a vessel and the outer walls of a conduit 14 passing through one wall of the vessel and terminating in an outlet at the opposite wall, the heating gas being fed through the conduit and orthophosphoric acid through the inlet 17 in the opposite wall. The heating gas containing the entrained acid is in heat exchange with the incoming gas and is led out of the evaporation zone through an outlet 19 adjacent to the point at which the conduit enters the vessel.  It then passes to inert separator 21 where droplets of phosphoric acid having a high polyphosphate content coalesce and are led away via 24, gases being removed via 25 to a fume scrubber 26 before venting to the atmosphere.  The heating gas is prepared by burning fuel gas in a combustion zone 11 and it may be tempered with air supplied through 16 before entry into the evaporation zone via 15.
Patent GB-509346-A (GB)
Title: An improved means for locking the pivotal back or back and arms of a chair or the like
IPC: A47C7/44
Filed: 1938-02-25
Abstract: 509,346. Folding seats. VAUGHAN, E. Feb. 25, 1938, No. 5939. [Class 52 (ii)] In a chair &c. in which the back and arms are pivoted to fold down on the seat, a gravity controlled locking catch or catches is or are provided for retaining the back in position and operated by means of a pivotally mounted bar. The back, with arms 5, Fig. 1, is pivoted to the lower frame 7 at 6. Pegs 10 engage in slots in plates 8 on the ends of a rod 9, the centre part of which is cranked, rotatably mounted in the frame. The weight of the cranked part of the rod normally holds the plates 8 in the position shown, and the lower parts of the plates are rounded so that the pegs 10 move the plates to engage the slots. In a modification, the catches 18, Fig. 6, pivoted at 18a and weighted by a connecting bar 20, engage plates 21 on the back.
Patent GB-590728-A (GB)
Title: Improvements in control systems for objects travelling in prescribed paths, such as pneumatic tube dispatch systems
IPC: B65G51/44
Filed: 1944-03-31
Abstract: 590,728. Pneumatic despatch apparatus. HALPERN, J. W., WARD, W., and BERNARD, B. March 31, 1944, No. 5944. [Class 78(i)] [Also in Group XXXVIII] In a system wherein an object travels along a prescribed path and can be diverted as desired at one or more switching stations, such as a pneumatic tube despatch system, each travelling object carries means for emitting vibrations such as sound waves of a selected one of a number of fixed frequencies, or groups of fixed frequencies, and each switching station is associated with means responsive to one of the said frequencies, or groups of frequencies, to set the switch automatically to the desired position on the approach of an object emitting that frequency or group of frequencies. A carrier 14, Fig: 6, for a pneumatic tube system is provided with a sound head 18 which is separated from the carrier by an air chamber 16. Eight reeds 20 are mounted over apertures 19 in the sound chamber, each being tuned to a different frequency and coming into operation when a valve 21 is raised from its seating in the aperture 19 and inserted in a recess 25. The air chamber communicates with the space in the tube behind the carrier through a tube 15. The responsive element, Fig. 8, comprises a portion 27 of thin-walled tube which is inserted in the pneumatic tube PT and the exterior of which is turned or ground to respond to a particular frequency. The tube 27 is surrounded by a split hollow cylinder 28 which is spaced . therefrom by insulating washers 29 and is packed with carbon granules 30. The microphone so formed is inserted in an electric circuit controlling a switch for diverting the carrier. Alternatively the space between the parts 27, 28 may be filled with air or evacuated, or if both parts are of ferromagnetic material, the microphone could be of the electromagnetic type. The actuation of the device by spurious harmonic, or other related frequencies is prevented by the insertion of a filter circuit 33, Fig. 10. A construction is also described in which the responsive element, Fig. 1, comprises a microphone M and a telephone T connected by an air-filled tube, K which forms an acoustic impedance link. Sound vibrations impinging on the diaphragm m will cause it to vibrate, and, if they are of the same frequency as the inherent frequency of the relay, the circuit will be set into oscillation and the switching device will be operated. Harmonics, &c., may be cut out by an acoustic filter. In a further modification the sound is picked up by a number of microphones RM, Fig. 3, located at different positions. The frequency is adjusted by moving a butterfly valve by a handle TL.
Patent GB-1354841-A (GB)
Title: Continuous photographic emulsion processing
IPC: B01F5/06
Filed: 1972-02-09
Abstract: 1354841 Photographic emulsion preparation AGFA-GEVAERT AG 9 Feb 1972 [11 Feb 1971] 5964/72 Heading G2C [Also in Division B1] A photographic silver halide emulsion is metered by a pump 3 to a tubular mixer and additives (such as sensitizing dyes, stabilizers, wetting agents, hardeners, optical brighteners and pH regulators) are metered by reciprocating pumps 5 to successive inlets between which these are only static mixing devices. The pumps 3, 5 have a common drive. As shown the tubular mixer is arranged in hairpin-like sections 4 and the static mixing devices are helical inserts 7. The inlets 6 are preferably multiple nozzles and the last two sections 4 have detection and control means 8, 9, 8', 9' to adjust the stroke of the pumps 5' to keep the PH and viscosity constant. Each tube section has a quick release end closure 13, Figs.2a, 2b (not shown) which supports the helix, and a heat exchange jacket (14). Preferably each helix has a ratio of lead a, Fig.3 (not shown) to the distance (b) from its core (7) to the inside of the tube of 2:1 to create turbulence (16).
Patent GB-1180220-A (GB)
Title: Improvements in or relating to Garden Tools
Inventor: DOBSON TERENCE MALCOLM
IPC: B25G3/22
Filed: 1966-12-15
Abstract: 1,180,220. Hand-tool handles. WARD & PAYNE Ltd. 21 Feb., 1968 [15 Dec., 1966; 8 Feb., 1967], Nos. 56110/66 and 6015/67. Heading B4K. A handle for a gardening tool, e.g. rake, hoe &c. having a shank with an end of non-circular section, comprises a collet at one end of the handle, the end of the handle having a recess for receiving the end of the shank such that relative rotation between the handle and tool head is prevented. The tubular handle 4 has a spigot 6 (Fig. 1) secured therein by adhesive and defines a non-circular recess 6c. The collet 8, which may be secured about the spigot by adhesive, has an externally threaded portion adjacent the spigot and provides resilient fingers 20. A locking nut 10 screws on to the collet and urges the fingers 20 to grip the shank 2 of the tool when inserted in the handle. Alternatively, the spigot is externally screw-threaded (Fig. 6) and has an internal tapered bore, and a locking nut or collet in which resilient fingers 26 are mounted is screwed on to the spigot whereby the tapered bore urges the spring fingers to grip the shank of the tool when inserted in the handle. The collet 8 may be of steel or plastics, and the fingers 26 may be of plastics.
Patent GB-1082121-A (GB)
Title: Improvements in flooring tiles or blocks
IPC: E04F15/10
Filed: 1965-02-12
Abstract: A flooring tile comprises hardboard of like material e.g papi<\>er mach<\>e having a layer of bitumen on the underside and a surfacing layer of an epoxy resin or a polyurethane on the upper side.  The bitumen layer may be adhered to the floor by a flooring adhesive e.g. an epoxy resin.  The surfacing layer may be pigmented or patterned.
Patent GB-491028-A (GB)
Title: Improvements in or relating to systems for signalling over power mains
IPC: H02J13/00
Filed: 1937-03-01
Abstract: 491,028. Electric signalling systems. ERICSSON OESTERREICHISCHE ELEKTRIZITATS-AKT.-GES. VORM. DECKERT & HOMOLKA. March 1, 1937, No. 6144. Convention date; Feb. 29, 1936. [Class 40 (i)] [Also in Group XL] In a system for signalling over power mains, more particularly for giving air-raid or fire alarms, wherein signalling is effected by lowering the mains voltage, the signalling responsive device is time-retarded in order to prevent operation by variations of the mains voltage other than those caused by the signals. Fig. 1 shows the receiving equipment connected to power mains 1, 2 and comprising a normally energized relay R shunted by a rectifier. When the mains voltage is lowered the relay R is released and a thermic relay Th is connected across the mains and after a predetermined period operates the signal device W. The device W may be impulsed subsequently at the contacts r<2> of the relay R. The sensitivity of the relay is controlled by a resistance connected across the relay by its contacts r<1>. Fig. 2 shows a modification wherein the relay R is connected across the diagonal of a normally balanced bridge a .. d, the arms c of which contains an operative discharge tube G. When the mains voltage is reduced, the tube ceases to function and the bridge is unbalanced to cause operation of relay R. The sensitivity of the bridge may be increased by including in one of the arms, a resistance having a negative temperature coefficient. A discharge tube may also be connected in the arm b. The system may be employed for switching on a radio receiving set and effecting automatic tuning of the set to the local station. The Specification as open to inspection under Sect. 91 describes systems wherein signalling may be effected by A.C. superposed on the power mains by current transformers or by modulations produced by modulating the exciting current of the generator at signal frequency. In addition, systems are described, Figs. 2,3, 4 and 9 (not shown), wherein the loudspeaker of a radio receiver may be operated by signal frequency when the receiver is in its inoperative condition a filter being included in the mains connection so as to exclude current of mains frequency. This subject-matter does not appear in the Specification as accepted.
Patent GB-353864-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B15/04
Filed: 1930-02-25
Abstract: 353,864. Sewing-machines. BRITISH UNITED SHOE MACHINERY CO., Ltd., Union Works, Belgrave Road, Leicester.- (Deutsche Vereinigte Schuhmaschinen Ges.; 147, Mainzer Landstrasse, Frankfort-on- Main, Germany.) Feb. 25, 1930, Nos. 6155 and 9445. [Class 112.] Lock stitching.- A curved hooked needle lock-stitching machine has three thread - engaging members of which two have relative movement while in engagement with the loop, to spread it open and facilitate its passage about the bobbin. The invention is described as applied to the machine described in Specification 23478/10, [Class 112, Sewing &c.]. The shuttle or rotary hook is abolished, the thread being passed round the bobbin case 7 by the loop handling devices. The thread loop drawn up by the needle 4 is er gaged by a pair of fingers 17, 18 which engage the side of the loop leading to the thread supply. These fingers separate to open the loop as they carry it into position to be passed round the bobbin case. The fingers are carried by an arm 19 pivoted on the shaft 20. The arm 19 is also pivoted to a link 21 provided with a square opening 22 surrounding a cam 23 on the shaft 24 geared to the cam shaft of the machine in timed relation. By this mechanism, the fingers 17, 18 are given an up-and-down movement with a dwell at the end of the movement. They have hooks at their lower ends for entering the loop. The rearwardly extending portion 31 of the loop between the fingers 17, 18 is engaged by a hook formed on the loop-taker 34 which advances from the left side of the bobbin case 7 through slots in the bobbin case bracket 13 and slide 14. The loop-taker 34 passes the spread loop over the bobbin case by a segment 35 moving on the rack 41.
Patent GB-1029973-A (GB)
Title: Improvements in hydraulic cement compositions
IPC: C04B24/04
Filed: 1965-02-12
Abstract: A Portland cement slurry is made by mixing with the cement an aqueous solution of a dispersant for the cement, in an amount 0.01 - 0.3% by weight based on the dry cement, said dispersant being the product of reacting a water-soluble carbohydrate which is a reducing sugar, partially hydrolysed starch or mixture thereof with a water-soluble salt of sulphurous acid until 15-75% of the carbohydrate is complexed.  Mortar or concrete slurries may be made by including sand, or sand and gravel, respectively in the cement and dispersant composition.  Suitable carbohydrates include glucose, sucrose, mannose, xylose, arabinose and hemicelluloses obtained by the steam hydrolysis of wood chips, and the sulphurous acid salt may be an alkali metal, i.e. sodium or potassium, or ammonium sulphite or bisulphite. The dispersant is prepared by heating a 20-70% aqueous solution of the carbohydrate, e.g. corn syrup, with sufficient sulphite or bisulphite to provide 0.05-0.40 parts SO2 per part carbohydrate at 120-170 DEG  C. until the SO2 is substantially consumed.
Patent GB-314127-A (GB)
Title: Improvements in adjustable head lights for motor vehicles
IPC: B60Q1/124
Filed: 1928-12-27
Abstract: 314,127. Pelou, G., and Lassalle, V. Dec. 27, 1928. Vehicle lamps, directing.-The headlights 1 of a motor vehicle are provided with extensions 2 secured in sleeves 3 rotatable in sockets 4 on a transverse bar 5 journaled in bearings 6 and connected with a hand lever 19 for dipping the lamps, the sleeves 3 are. connected by arms 9 and a link 11, and one of the sleeves is connected by an arm 12 and a link 14 with the steering lever 15, the joint 13 being in axial alignment with the bearings 6 so that the lamps can be dipped without being swivelled and vice versa. The hand lever 19 is connected by an adjustable link 18 with the lower end 23 of an extension 2 or with a forwardly-extending crank secured to the bar 5 adjacent a bearing 6. The bar 5 is adjustable in length as by means of clips 5<a> clamping telescopic parts and the link 11 by means of a turnbuckle. The bearings 6 are provided with preferably adjustable means for limiting the dipping movement and are supported by plates 7 on the mudguards 8, shock-absorbing means being preferably provided. The steering-lever 15 is formed with a series of holes 14b to allow for adjustment of the pivoted connection with the link 14. The ball-and-socket joints for the links are removable. The link 11 may be removed so that only one lamp is operated by the steering-gear, means being provided to hold the other lamp in any desired angular position.
Patent GB-920156-A (GB)
Title: Improvements in or relating to an electric circuit breaker arrangement
IPC: H02H3/10
Filed: 1961-02-20
Abstract: 920,156. Protective cut-out arrangements. SIEMENS-SCHTCKERTWERKE A.G. Feb. 20, 1961 [Feb. 19, 1960], No. 6236/61. Class 38 (5). A protective arrangement includes a base I on which is mounted a core-balance transformer 4 having two primary windings which carry the load current in opposite directions, one between terminals 6, 8 and one between terminals 7, 9. The secondary winding is connected to an operating coil 10 of a magnetic member 5 which is also operable on heavy overload due to the flux produced in the windings between terminals 7, 9. The trip member 5 which may be biased by remanent or permanent magnetism, releases a latch on which contacts are mounted.
Patent GB-1494244-A (GB)
Title: Cylinder head for internal combustion engine
IPC: F02B3/06
Filed: 1975-02-14
Abstract: 1494244 Valve seat inserts MASCHINENFABRIK AUGSBURG-NURNBERG AG 14 Feb 1975 [16 Feb 1974] 6243/75 Heading F1B In an I.C. engine cylinder head, an inlet valve seating ring 2 and an exhaust valve seating ring I have flats 5 which abut and protect the region 9 from the heat of combustion. The length of the flat is preferably <SP>1</SP>/ 5  of the mean diameter of the two seating rings. The Figs. are not drawn to scale. The valve seat may be concentric or eccentric with the periphery of the seating ring. Where four valves/cylinder are provided, each seating ring has two flats and each flat abuts one of the flats on an adjacent ring. Similar inserts may be provided to receive a spark-plug or fuel injector.
Patent GB-892304-A (GB)
Title: Improvements in or relating to sleepers
IPC: E01B9/18
Filed: 1960-02-23
Abstract: 892,304. Screw-sockets &c. MEIER, H. Feb. 23, 1960, No. 6280/60. Class 89(1). An arrangement for fastening rails to concrete sleepers comprises an externally screwed socket 5, of rubber, synthetic resin &c., screwed into a threaded hole 19 in a sleeper, and having a non-circular, e.g. square, crosssection bore 6 receiving the unthreaded shank portion 15, of similar section, of a bolt 4. The bolt is used to drive the socket into the sleeper and rests in the hole 19 with its tip 16 protruding, until drawn up to receive a nut 3 and washers 7. The hole 10 in the rail base plate 8 is of similar cross-section to the shank to prevent turning of the bolt. In the absence of a base-plate, hole 10 is provided in a plate inserted in the top face of the sleeper. The socket may be coated with an anti-friction layer, e.g. paraffin.
Patent GB-1099482-A (GB)
Title: Display device with legend change facility
Inventor: BOWERS WILLIAM LEONARD
IPC: F21V8/00
Filed: 1965-02-12
Abstract: 1,099,482. Display sign. WILLIAM L. BOWERS (LITHO) Ltd. April 1, 1966 [Feb. 12, 1965], No. 6301/65. Heading G5C. A display sign comprises a transparent sheet 1 bearing pictures 2, 3 in combination with a background card or sheet 7 which is of smaller dimension than the sheet 1 and bears a legend 8 thereon which is visible through a clear space of the transparent sheet, the transparent sheet being located on the background card or sheet by folded-back edges 4-6 of the transparent sheet to engage over edges of the background card or sheet. The background sheet may be of glass or plastics material with a rear white or fluorescent coating or else frosted and may have edge or rear illuminating means. The pictures are applied by printing or photographing on to the side of the transparent sheet nearest the background card. A foot 9 or ring 10 for supporting the device are attached to the background card 7.
Patent GB-666161-A (GB)
Title: Toilet paper containers
IPC: A47K10/40
Filed: 1949-03-08
Abstract: 666,161. Roll holders. POUNTNEY & CO., Ltd., and ELKIN, J. S. March 1, 1950. [March 8, 1949] -No. 6326/49. Class 18. A toilet roll holder comprises a casing adapted to be attached to a wall having downwardly inclined inturned flanges 7 on its end walls for supporting the core 10 on which the roll is mounted. The inclination of the flanges T serves to throw the roll into contact with the front wall of the holder thereby preventing undue rotation of the roll. The core is formed as a coiled wire spring compressible at its centre enabling it to be sprung into position in the holder.
Patent GB-349511-A (GB)
Title: Improvements in kettles
IPC: A47J27/212
Filed: 1930-02-26
Abstract: 349,511. Kettles with whistle stoppers. REIJNDERS, P. L. W., 90, Schenkkade, The Hague. Feb. 26, 1930, No. 6359. [Class 66.] In a kettle a having a spout b, a removable whistle closure member for the spout c, and a handle d, the handle is capable of movement relative to the kettle, and is connected to the whistle closure member, so that lifting the kettle causes movement of the handle and hence lifts the closure member from the spout. When the kettle is put down again the closure member moves back into its seat on the spout owing to its own weight and to that of the handle. The whistle closure member c, Fig. 1, carries a projecting member h which engages by means of a joint j either with a member 9 secured to the kettle, or directly with the spout b. The handle d is pivoted to the bottom part of the kettle at e, and connected to the closure member c through a link l and joints k, m. If preferred, the hinge e may be between the handle and the closure member, and the piece l, with joints k, m between the handle and the bottom part of the kettle. The link l, with joints k, m, may be replaced by other forms of fastening. The handle d, Fig. 4, may have two small rods s, which are adapted to reciprocate in two small tubes r which are connected to the top of the kettle. Cross-pins u on the rod s project through slots t in the tube. r and limit the upward movement of the handle. Projecting from one of the rods s is a bifurcated rod x having a cross-pin y between its ends, which pin extends through a slot w in a vertical plate u secured to the whistle-stopper c.