baber/WOPTO huggingface dataset:
Patent GB-456263-A (GB)
Title: Improvements in and relating to electrical contactors
IPC: H01H50/34
Filed: 1936-03-21
Abstract: 456,263. Springs. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London. March 21, 1936, No. 8527. Convention date, March 21, 1935. [Class 108 (iii)] [See also Group XXXVII] An electrical contactor comprising a member movable between two positions with means for actuating it to one of these positions has a spring for normally biassing it to the other position, the spring being confined by an adjusting member interposed between it and a retaining bar, this member having a plurality of portions of different thickness arranged selectively to engage the bar and be locked in position thereby, thus varying the confinement of the spring to adjust the bias on the switch member. Movement takes place against the action of a compression spring 23 one end of which bears against a slot 23<1> formed in the rear face of the armature, Fig. 3, and the other end bearing against an adjusting member 26. This member 26 is formed with a number of diametrical slots 27 .. 29 one of such slots normally engaging a cross-member 19 of the U-shaped bracket 18 which member serves as a retaining bar. Thus the compression of the spring may be varied by moving the member 26 inwardly to free the slot from the bar and then rotating the adjusting member till a slot of different depth is opposite the bar, the member then being released and automatically locked in position by the reaction of the spring.
Patent GB-229354-A (GB)
Title: Improvements in the construction of catalyst furnaces for use in the synthesis of ammonia or in similar gaseous reactions or operations
IPC: C01C1/04
Filed: 1918-05-23
Abstract: 229,354. Greenwood, H. C., and Tate, W. R. May 23, 1918. Catalytic apparatus; ammonia, catalytic production of from nitrogen and hydrogen.- Apparatus for catalytic gaseous reactions under pressure, such as the synthesis of ammonia, comprises a catalyst chamber surrounded by a heat-interchanger built up by disposing one or more heat-insulating partitions between the chamber and the outer pressure-resisting walls of the apparatus. The space between the partitions may contain a set of coils for the passage of the gases in one direction, whilst the partitions are shaped to suit the varying temperature gradient, being preferably of wedge formation. In the apparatus for the synthesis of ammonia shown in the Figure, the space between the central tubular catalyst chamber a and the outer pressure-resisting wall b contains coils e for the outgoing gases, the coils being separated from one another and from the catalyst chamber by wedgeshaped partitions f of heat-insulating material. The gases entering the apparatus pass over the coils and between the partitions, but the reverse direction may also be employed. Individual turns or groups of the coils may also be separated by spirally-arranged baffles g which may be formed of heat-insulating material. The partitions mav be constructed of sheet iron filled with wool or powder and provided with apertures to ensure pressure equalization. Electric heating devices may be incorporated in the apparatus.
Patent GB-1145411-A (GB)
Title: Improvements in or relating to tunnel diodes
Inventor: SETCHFIELD JOHN BERNARD
IPC: H01L29/00
Filed: 1968-02-22
Abstract: 1,145,411. Tunnel diodes. STANDARD TELEPHONES & CABLES Ltd. 22 Feb., 1968, No. 8743/68. Heading H1K. A tunnel diode consists of a die 30 of germanium, gallium arsenide, or gallium antimonide enclosed in a case and having a narrow necked portion on the end of which is alloyed an arsenic loaded tin dot 35. Connection between the dot and the cover-plate 33, which serves as one of the electrodes, is made by means of two gold straps, one 37 being wide and robust to reduce inductance effects gold bonded to a support block 31 of semi-insulating gallium arsenide and the other 36 being very fine and short connecting the tin dot with the robust strap. Cover-plate 32 forms the other electrode, and the casing is completed by the ceramic tube 34. To avoid damage the narrow neck is etched to size after the attachment of the strap to the tin dot. In an alternative embodiment the ceramic tube 34 is not used, but is replaced by a combined tube and strap support block of semi-insulating gallium arsenide, Figs. 5 and 7, not shown.
Patent GB-579655-A (GB)
Title: Improvements in or relating to wireless receiving and transmitting systems
IPC: H01Q25/00
Filed: 1943-06-01
Abstract: 579,655. Wireless transmitting and receiving apparatus. ROBINSON, J. June 1, 1943, No. 8788. [Class 40 (v)] A transmitting aerial is prevented from affecting a local receiving aerial by placing the latter in a neutral zone produced by symmetrical arrangements of the transmitting aerial and feed conductors. As shown in Fig. 1, the loop receiving aerial 14 is symmetrically placed between the feed lines 11 to the radiating aerials 12 with its plane at right angles to the plane containing the feed lines 11. The lines 11 may be connected towards their upper ends by one or more transverse wires forming a closed loop (Fig. 2, not shown). In Fig. 3, the feed lines 11 form a closed loop connected by lines 19 to the transmitter 10, and a vertical and transverse antenna 20, 21 is connected to the midpoint of the upper part of the loop. The lines 11, 19 may be shielded by tubes 23 having a gap where the antenna is attached. In a further arrangement, the transmitter 10 is connected by a shielded feed line to the midpoint of the lower stretch of the loop 11. The receiver loop 14 may be arranged to feed received energy to the transmitter 10 so that the system operates as a relaying station. The receiver loop may be adjustable upwards and sideways and may be mounted on gimbals to adjust its orientation and tilt (Fig. 4, not shown). The power supply cables 25, Fig. 3, should be symmetrically placed with respect to the receiving loop 14, which may be screened by a gapped sheath in known manner. The function of the two aerials may be reversed, the transmitting aerial being arranged within a loop or between feed conductors associated with the receiver circuit. The receiver aerial may be of the open vertical type. In Fig. 5, the transmitter 10 is connected by wires 28, 29 to opposed poles of a pair of dipoles 26, 27, and the receiving loop 14 is set up centrally within the rectangle formed by the wires 28, 29 and the dipoles, and with its plane perpendicular to that of the rectangle. Specifications 573,978 and 574,047 are referred to.
Patent GB-585827-A (GB)
Title: Improvements in or relating to the demodulation of time-modulated electrical pulses
IPC: H03K9/06
Filed: 1943-06-01
Abstract: 585,827. Pulse modulation. STANDARD TELEPHONES & CABLES, Ltd., and LEVY, M. M. June 1, 1943, No. 8798. [Class 40'(v)] In a signalling system employing short phase-modulated pulses, reception is effected by combining the received train of constantwidth pulses a, Fig. 4, with a train b which is delayed by a constant time To slightly longer or shorter than the pulse repetition period. The pulses c derived from the overlap of the trains a; bare duration-modulated and the signal may be obtained by utilizing the pulses c to charge a condenser. The transmitted pulses may be received on a radio receiver RR . and detector D, Fig. 3, the detected pulses a being applied directly to a grid G1 of a doublegrid valve V. Pulses b delayed by a network DN are applied to the other grid G2. The grids are biassed so that current passes only when both grids receive a pulse, the anode current being thus of the form c. A resistance R shunted by a condenser C is provided in the anode circuit and the voltage across the combination varies in accordance with the original signal voltage. Both sets of pulses may be applied to a single grid, the valve passing current only when both are present. The network DN may be terminated by a resistance R1 of such value that reflection of the pulses is prevented ; or the termination may be left open and reflected pulses utilized as the delayed pulses, the tapping on the network, being then omitted. The received pulses, which are all of the same duration, may if necessary be lengthened by any suitable means, e.g. by the means described in Specification 585,826, or by interposing between the detector D and the network DN the circuit shown in Fig. 5. The pulses are applied to a delay network DN1, terminated by anon-reflecting resistance R5 and having a series of tappings connected to the grids of a series of valves VI, V2, ... the anodes of which are connected together and by a resistancecapacity coupling to the grid of a valve CV. The valves are biassed to cut-off, and the delayed pulses open each valve in turn before the preceding valve cuts off. When current is passing through any of the valves V1, V2, &c. the valve CV is cut off, and pulses of lengthened duration may be taken off from the terminals O. The number of valves may be reduced if the resistance R5 is removed, so that pulses are reflected at the open end.
Patent GB-823743-A (GB)
Title: A selector device for selecting a predetermined operation
IPC: G07F5/18
Filed: 1957-03-18
Abstract: 823,743. Interlocking mechanism. PATZER, W. A. March 18, 1957 [March 27, 1956; June 25, 1956], No. 8832/57. Class 80 (3). [Also in Groups XVIII and XXXVII] The performance of more than one operation at any one time in a vending machine, railroad switching system or other apparatus is prevented by a device comprising a number of flat discs 10 fitted under a cover 20 in a slot 16 between stop-pins 22, 24 or other means which define the length of the slot and the sum of the diameters of the discs is less than the slot length by between one and two times the thickness of each of a series of members 26; when one member is moved to occupy the space between two adjacent discs, the discs are positioned so that they prevent movement of the other members. The members 26 may comprise spring-loaded plungers which are slidable across the slot and have a recess 15 for accommodating part of the edge of a disc when the plunger is in its normal position. When a plunger is operated, one end of the recess cams a disc 10 sideways and the other plungers are locked by the discs engaging in the slots 15. By means of a cam surface 40 and a switch arm 42 the operated plunger actuates a switch 44 that determines the operation that can be performed. Longitudinal grooves may be provided in the base of the slot to reduce friction and pins 52, 54 may be provided to limit the movement of the plungers. In a modification, the plungers do not act directly but are connected to a rocker arm which is movable into position between adjacent discs.
Patent GB-401571-A (GB)
Title: A device for use in replenishing the strip of vouchers, such as postage stamps and the like, in apparatus for the delivery of vouchers
IPC: F21V17/16
Filed: 1933-03-23
Abstract: 401,571. Feeding webs. LANDIS & GYR AKT.-GES., 1, Hofstrasse, Zug, Switzerland. March 23, 1933, No. 8840. Convention date, April 5, 1932. [Class 100 (i).] A device for replenishing the strip of postage stamps or vouchers in a stamp &c. issuing machine comprises a supporting track on which the trailing end of an expiring strip and the leading end of a new strip can be held in alignment while being secured together. The device comprises a frame 1, Figs. 1 and 2, and a member 6 pivoted thereto and normally held by a latch 14 and spring 16 with its upper surface 8 in the same plane as the surface 3 of the frame 1. The surfaces 3, 8 form a supporting track for the strips and are provided with guide ribs 18 for the edges of the strips and rows of pins 19 to engage the perforations separating the stamps &c. and the pins are so positioned that the strips may be arranged thereon so that the ends of the strips coincide with the edge 5 separating the surfaces 3, 8. The strips are held on the surfaces 3, 8 by pivoted flaps 20, 21 provided with holes to receive the pins 19. If the trailing end of the voucher strip is provided with side recesses, the track 3 may be provided with additional pins 25 to engage therein. The strips are usually provided on their leading ends with a projecting adhesive portion by which it may be secured to the expiring strip and, to prevent soiling of the new strip, the member 6 is raised into the position shown in broken lines in Fig. 1, by releasing the latch 14, before the end of the strip on the track 3 is moistened. Specification 397,779, [Group XIX], is referred to.
Patent GB-260163-A (GB)
Title: Improved construction of steam trap
IPC: F16T1/34
Filed: 1926-04-01
Abstract: 260,163. Lock, T. J., and Sprenger, G. C. April 1, 1926. Steam traps.-In a steam trap of the type having a conical plug with labyrinth grooves, the casing A is provided with a side outlet C, and the plug B has a conical shoulder I. An adjusting screw E with a coni. cal point determines the extent of lifting of the plug B under the action of the steam which is admitted at the lower end. In a modification, the outlet C is coaxial with the plug.
Patent GB-559208-A (GB)
Title: Improvements in or relating to the manufacture of vulcanised products of comminuted solid material and rubber
IPC: C08L21/02
Filed: 1942-06-29
Abstract: 559,208. Vulcanized rubber containing ground solids &c. UNITED STATES RUBBER CO. June 29, 1942, No. 8889. Convention date, July 9, 1941. [Class 70] Solid material, e.g. ground cork, of specific gravity less than 0.5, or vermiculite is mixed with rubber latex &c. which has been heatsensitized and the mix is vulcanized by heat. An example specifies zinc oxide, with accelerators and triethyl trimethylene triamine as heat-sensitizers; and, as stabilizers not affecting the heat sensitivity, potassium or sodium hydroxide, or dimethylamine. The mixture may be packed into moulds, heated to 312 to 320‹F. for about 10 to 15 minutes, removed and oven-dried to form non-porous shoe soles &c.
Patent GB-644655-A (GB)
Title: Improvements in connection with means for operating a low speed reciprocating pump or pumps from a rapidly rotating source of power
IPC: F04B9/02
Filed: 1948-03-25
Abstract: 644,655. Reciprocating pumps. CANDY, F. P., and THOMAS, W. D. J. March 25, 1948, No. 8891. '[Class 102(i)] In a slow running reciprocating pump, suitable for injecting, chemicals into a liquid flowing in a pipe, a high speed motor 9 is mounted on an enclosed casing 13 and the drive is transmitted through a worm 2 to a worm wheel 3 on which eccentrics 5 are formed to drive a pump 8 also mounted on the casing 13; the shaft 4 on which the worm rotates is carried in eccentric bushes 16 be adjusted to obtain the correct clearance in the worm drive and are secured by pins 17. Plugs 10, 11 permit filling and draining of lubricant to the casing and a non-return air valve 12 is fitted. The shaft 4 may rotate with the worm wheel.
Patent GB-733018-A (GB)
Title: Improvements in or relating to conveyors, more especially scraper conveyors for mineworkings
IPC: B65G23/00
Filed: 1953-03-31
Abstract: 733,018. Endless conveyers. OELLRICH, A., [trading as MASCHINENFABRIK UND EISENGIESSERCI A. BEIEN]. March 31, 1953 [May 10, 1952], No. 8891/53. Addition to 706,619 and 713,204. Class 78 (1). The apparatus of the parent Specification is modified by the inclusion of a self-closing valve 19 on that pressure chamber of the motor 8 which is adapted for reverse drive such that wher the conduit 13a leading to the clutch actuating cylinder 10 is discon nected from that chamber the valve automatically closes and, further, this valve has a manual or remote control such that ever when the conduit 13c is connected to it the valve is not openec except when the manual or remote control is actuated. As shown, a further selfclosing valve is mounted on the connection 8a of the pressure chamber adapted for forward running of the motor 8 which is automatically opened when conduit 13a is connected to it. A three-way cock may be used to connect conduit 13a to either of the self-closing valves at will to avoid the necessity for interchanging the connection point of the conduit 13a.
Patent GB-558329-A (GB)
Title: Vulcanisation of rubber
IPC: C08K5/00
Filed: 1942-06-29
Abstract: 558,329. Accelerators of vulcanization of rubber. DU PONT DE NEMOURS & CO., E. I., NEAL, A. M., and STURGIS, B. M. June 29, 1942, No. 8903. [Class 70] In vulcanizing rubber is used as a primary accelerator, a 2 - mercapto - thiazoline, together with a derivative of a dithiocarbamic acid as a secondary accelerator, e.g. in the proportions 1-100 : 1 respectively. The 2 - mercapto - thiazoline may be unsubstituted, or may include methyl, ethyl, or propyl &c. substituents, or the lead, cadmium, iron, or zinc salts may be used. The dithiocarbamic acid derivatives may be an amine salt, a metal salt, a carbamyl  or other acyl derivative, or an ester. If the amine salt of dithiocarbamic acid is a secondary aliphatic amine, two valencies of the nitrogen may be satisfied by the terminal carbon atoms of a pentamethylene or hexamethylene chain. Derivatives of dithiocarbamic acid specified also include methyl, ethyl, butyl, dimethyl, ammonium, chloro, hydroxy, diethyl, dipropyl, dibutyl, diamyl, diallyl, phenyl, tolyl, naphthyl, lauryl, furfuryl, cyclo- and dicyclohexyl radicals, diphenyl- and triphenyl - guanidine salts, and salts of zinc, cadmium, lead, iron, mercury, aluminium, tin, cobalt, nickel, and silver. Specification 538,199 is referred to.
Patent GB-1073883-A (GB)
Title: Improvements in or relating to liquids for treating pelts or furs
Inventor: HILDEBRAND OSCAR
IPC: C14C9/02
Filed: 1965-03-02
Abstract: An aqueous composition for treating pelts and furs comprises a mixture of approximately equal amounts of component (A) which is a blend of non-ionic emulsifiers and sperm oil (Chromopal Triethanolamine) and component B which is an anionic emulsion of neatsfoot oil.  Component B may comprise a triethanolamine oleate as anionic emulsifier.
Patent GB-753312-A (GB)
Title: Induced draught refractory liners for fireplaces and the like
IPC: F24B1/19
Filed: 1953-04-01
Abstract: 753,312. Fire backs. DUNNETT, W. F. March 29, 1954 [April 1, 1953], No. 8981/53. Class 126. A fireplace liner comprises a block with a recess 3 in the base, and ducts 4 leading from the recess to the front face of the block through enlarged outlet recesses 5. The outward flare of each recess 5 is greater at its lower side than on the upper side, and a recess 7 above the outlets 5 provides an upwardly directed heat reflecting face 8.
Patent GB-1437164-A (GB)
IPC: B65B55/00
Filed: 1974-02-27
Abstract: 1437164 Sterile packaging; filling containers ROBERT BOSCH GmbH 27 Feb 1974 [2 March 1973] 8982/74 Headings B8C and B8T In an apparatus for filling containers 20 with liquid or pasty materials under sterile conditions, filling nozzles 23 located in a sterile chamber 19 are movable between a filling position and a sterilizing position whereat the outlets of the nozzles 23 communicate directly with a discharge conduit 37 which is located in the chamber 19 and through which steam for sterilizing the interior of the nozzles 23 and the remainder of the material delivery system is discharged. Openings for co-operation with the nozzles are provided in branches 38 of the discharge conduit 37. The connection between the nozzles 23 and the conduit 37 is fluid-tight. The nozzles 23 are carried in a plate (40), Fig. 2 (not shown), which is mounted with a clearance in an opening (41), Fig. 2 (not shown), in a wall of the chamber 19 and sealed to this wall by a flexible wall (42), Fig. 2 (not shown). The apparatus also includes a heater 12 for heating a thermoplastic plastics strip 11, a device 13 for moulding containers 20 in the heated strip 11, a device 15 for applying a foil closure strip 25, rollers 16 for intermittently moving the strip 11  through the apparatus, and a punch 17 for separating the containers. The interior of the chamber 19 and the components housed therein are sterilized by spraying a liquid or gaseous disinfectant through nozzles 30. The atmosphere in the chamber 19 is maintained sterile by introducing sterile air through a conduit 31 at a pressure greater than atmospheric pressure.
Patent GB-348298-A (GB)
Title: Improvements in or relating to spring mattresses, seats or the like
IPC: A47C27/04
Filed: 1930-03-21
Abstract: 348,298. Spring mattresses and cushions. CHAMBERLAIN, KING, & JONES, Ltd. and REDFERN, W. E., 27, Union Street, Birmingham. March 21, 1930, No. 9050. [Class 52 (iv).] Upholstery springs 1 are connected in groups to endplates 3 for assembly with or without fabric pockets. The axis of the individual springs are parallel and the springs may be panel-shaped, conical, &c. The plates are cut away, as at 4, for greater resiliency and the ends of the springs are flat and riveted to the plates or an end, e.g. 8, Fig. 5, may pass into the pressed-down part 7 between two slits in the plate.
Patent GB-308281-A (GB)
Title: Improvements in or relating to the treatment of bromine and iodine
IPC: C01B7/09
Filed: 1929-03-20
Abstract: 308,281. Govett, Ltd., (Assignees of Govett, E.). March 20, 1928, [Convention date]. Bromine : iodine.-Water-soluble colloidal forms of iodine and bromine are obtained by causing the halogen to react with gallic or tannic acid to produce hydrogen halide, converting this into an insoluble metallic halide, and decomposing this to yield the halogen in a colloidal and probably hydrated form. For example, iodine is treated with tannic or gallic acid, and a nitrate or acetabe of lead, silver, copper, bismuth, thallium, or mercury is then added. The insoluble iodide is removed and decomposed by treatment with a strong acid or with bromine, and the colloidal iodine is obtained by evaporating the resulting solution to dryness. Bromine can be obtained by a similar method, or by a modified method which consists in treating potassium bromate with tannic acid, heating and adding nitric acid, allowing the insoluble tannate to settle, and filtering, leaving hydrogen bromide in solution. Upon evaporating this, a hydrated bromine is obtained.
Patent GB-227327-A (GB)
Title: Improvements in or relating to valve-actuating mechanism for fluid pressure engines,pumps or compressors
IPC: F01L5/10
Filed: 1924-04-10
Abstract: 227,327. Ricardo, H. R. April 10, 1924. Valves and valve seats, arrangement of. - In sleeve-valve gear for engines, pumps, or compressors, risk of damage from seizure or overloading of the valve is prevented by transmitting the drive through a frangible part the material of which is similar to that of the valve and is preferably centrifugally cast iron. The fragments are caught in a cover. In multiple-cylinder apparatus, a single breaking piece may be employed for each valve or for all the valves. The sleeve A is operated by a crank pin C on a shaft E carrying a fixed disc F and a loosely-mounted gear wheel G driven from the crank-shaft. The wheel G has a slotted part G<1> which engages frangible, undercut, radial ribs J<2> on a disc J mounted on pins F' in the disc F. The sleeve K catches the fractured parts.