baber/WOPTO huggingface dataset:
Patent GB-949513-A (GB)
Title: Cyclic phosphorus compounds and process for preparation
IPC: C07F9/30
Filed: 1961-06-27
Abstract: Phosphatricyclo decanes of general formula: <FORM:0949513/C2/1> wherein X and Y are -O- or <FORM:0949513/C2/2> , R is H or the residue of a primary phosphine; R1, R2, R3, R4 are lower alkyl groups or -CF3; Z is R-P< in which R is as above, are produced by reacting phosphine or a primary phosphine, in the presence of a strong acid, with an alkyl-b -diketone or a fluoro-substituted alkyl-b -diketone, to form the corresponding 1, 3, 5, 7-tetraalkyl -2-oxa - 6, 9 - substituted -10 - phosphatricyclo (3.3.1.13,7) decane. 1, 2, or 3 molar equivalents of phosphine may be used with 2 molar equivalents of the b -diketone to give the trioxa, dioxa and monooxa product respectively. The reaction may be at a temperature from -20 DEG  to 200 DEG C., preferably 15-80 DEG C. Z may be converted into <FORM:0949513/C2/3> in which Ra is H or lower alkyl; Q is O or S, by treatment at -80 DEG  to 250 DEG C. with an organic or inorganic oxidising agent, e.g. H2O2, ozone, NaOCl, t-butyl hydroperoxide or S. When Ra is H, it may be converted to a salt of an alkali metal, alkaline earth metal, substituted or unsubstituted ammonium, or heavy metal by reaction with the metal hydroxide. When Z is <FORM:0949513/C2/4> , treatment with a halogenating agent, e.g. thionyl chloride converts it into halogen <FORM:0949513/C2/5> ; and when Z is <FORM:0949513/C2/6> , treatment with sulphuryl chloride produces halogen- <FORM:0949513/C2/7> both these reactions are at 0-150 DEG C. Compound I in which R is H may be reacted with an isocyanate or diisocyanate to convert Z into <FORM:0949513/C2/8> or with benzaldehyde or a substituted benzaldehyde to convert Z into <FORM:0949513/C2/9> in which Rd is phenyl, halosubstituted phenyl, or lower alkyl substituted phenyl; Re is lower alkyl, substituted alkyl, phenyl, substituted phenyl in which one of the substituents on the phenyl and alkyl is <FORM:0949513/C2/100> in which R1-R4 are as above, and other substituents for the phenyl moiety being halogen, nitro, or lower alkyl. Z may also be converted into <FORM:0949513/C2/111> where R6 is H or the residue of a primary phosphine and Q is O or S, by oxidation with O2, H2O2, organic peroxide, or S, at 0-100 DEG C. Reaction at 0-150 DEG C. with at least 2 molar equivalents of a lower alkyl aldehyde in the presence of an acidic catalyst converts Z into <FORM:0949513/C2/122> where R+ and Rg are H or lower alkyl and K\sK is the anion of a mineral acid. Reaction with a lower alkyl halide at 0-200 DEG C. converts Z into <FORM:0949513/C2/133> where Rh and Ri are lower alkyl and M\sK is halide. All reactions may be performed in an inert solvent. The products are useful as gasoline additives.ALSO:Additives to gasoline comprise compounds of the general formula:- <FORM:0949513/C3/1> in which X and Y are -O-or <FORM:0949513/C3/2> , R is H or the residue of a primary phosphine; R1, R2, R3 and R4 are lower alkyl groups or -CF3; and Z is R-P<,R being as above. When X and Y are oxygen, Z may be one of numerous alternative groups (see Division C2).
Patent GB-479943-A (GB)
Title: Improved curtain for tents, doorways, and the like
IPC: A47H5/14
Filed: 1936-08-24
Abstract: 479,943. Tents. MARTIN, S. BOS, WORTH-. Aug. 24, 1936, No. 23198. [Class 20 (i)] [Also in Group XIV] A curtain or mosquito net suitable for use across a tent doorway is gathered in pleats 3 at one or other ends so that its foot 2B can be lifted to permit entry, the pleats being retracted on release by a cord 4 tensioned by a weight 7 or a spring. Specification 443,727 is referred to.
Patent GB-998855-A (GB)
Title: Improvements in or relating to seat structures
Inventor: RADKE ARTHUR OLSEN
IPC: B60N2/52
Filed: 1962-06-16
Abstract: 998,855. Resiliently mounted adjustable seats. BOSTROM CORPORATION. June 6, 1962, No. 23265/62. Headings A4J and A4U. An adjustable seat comprises a seat part 12, a base part 10 and an intermediate frame 11, each relatively movable. The seat part 12 is adjustable vertically by turning a shaft 51 whose movement turns bevel gears 46, 53 and raises a nut 45 and bracket 48 connected to frame 11, so that the frame 11 is raised relative to the base part 10. Since the seat part 12 is resiliently supported on the frame 11 by parallel lever arms 59 this also moves vertically. In this movement the frame 11 is guided by two pairs of vertically acting parallelogram lever arms 24 secured to the frame 11 and base part 10, each pair is connected by pins 20, as are lever arms 59 by pins 96, to prevent listing of the frame 11 under off-centre loads. The chair frame 111 can be adjusted to move fore and aft by sliding rails 107 on balls 109 in tracks 105 connected to the seat part 12. The degree of pretension of a rubber spring 65 can be adjusted so that an impact upon the base part 10 is not transmitted to the seat part 12, by lining up a notch 90 on a crank 85 and a pin 91 on a screw shaft 79, turning the screw shaft 79 which is held against axial movement by bearing 82 and abutment 80 so that a nut 78, secured to an anchorage plate 72 of the rubber spring 65, moves along the screw shaft 79 and twists the rubber spring 65. The mechanism also includes a hydraulic shock absorber 32 comprising two telescopic parts 131, 132, connected to the seat part 12 and frame 11 by rubber joints 135, 133. A back rest frame 120 pivoted at 121 to the seat part 12 is angularly adjusted by means of a toothed slot 124 and pin 125.
Patent GB-337400-A (GB)
Title: Improvements in elasticized fabrics
IPC: D06C29/00
Filed: 1929-07-29
Abstract: 337,400. Comfolastic Corporation. Nov. 2, 1928, [Convention date]. Materials for wearing-apparel. - Elasticized fabrics suitable for use in wearing-apparel such as waistbands on undergarments, garters, sleeveholders and socks are made by subjecting a knitted fabric such as artificial silk to a moisture treatment, stretching it in one direction, allowing it to dry in its stretched condition and vulcanizing a sheet of rubber on one face of the fabric, whereby elasticity in a direction transverse to the direction of stretching is secured.
Patent GB-152501-A (GB)
Title: An improved apparatus for detecting the temperature of demagnetisation of steel or other magnetic materials
IPC: H01F7/02
Filed: 1919-09-23
Abstract: 152,501. Stopford, C. W., and Darling, C. R. Sept. 23, 1919. Tempering. - An apparatus for indicating the demagnetization temperature of iron and steel prior to quenching comprises a moving soft iron member arranged within a coil and adapted to displace one of a pair of resilient arms and so break a circuit containing a bell or other indicator. An iron rod is pivoted within a casing L about which a coil is wound; the coil may be connected in series with an electric furnace winding. The rod, when deflected, bears against one of the springs B and thereby breaks a circuit through a cross-piece C. A bracket G carrying the springs and cross-piece is then moved laterally by a screw D until the circuit is again completed. Upon introducing the charge into the furnace, the circuit is again broken owing to the increase of magnetic-flux in the vicinity of the furnace winding. When the critical temperature is reached, the demagnetization of the charge allows the circuit once more to be completed. A mirror may be mounted on the rod to facilitate observation of its movement.
Patent GB-1346938-A (GB)
Title: Reactors and method of manufacture of semiconductor devices using such a reactor
IPC: C23C16/455
Filed: 1971-04-19
Abstract: 1346938 Gas/solid contact; decomposing gases PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 April 1971 [11 March 1970] 23376/71 Heading B1F [Also in Division C1] Semiconductor material is deposited on substrates 4 from gas flowing as at 5 through tube 2 which gradually narrows as at 6, the substrates being heated through susceptors 21 by high frequency inductions coil 3. The susceptor may consist of graphite with a surface of silicon carbide. The substrates 4 may be silicon and silicon may be epitaxially deposited from a hydrogen stream containing SiH 4  or SiHCl 3 , or silicon nitride may be deposited. Polycrystalline layers may be deposited. Etching processes on substrates using an etchant gas may also be carried out. The substrates may be continually passed through the tube during deposition. The process condition may satisfy the following relationship: wherein V o  is the rate of flow of the gas stream in cms/sec at N.T.P. at the part of tube 2 where the process begins to take place, T s  is the temperature in degrees K of the substrate, T m  is the temperature in degrees K of the gas in the tube portion for the performance of the process, b is the distance in cms between the susceptor 21 and the top inner surface of the part of the tube 2 where the process begins to take place, and D o  is the diffusion coefficient in sq. cms/sec of the compound in the gas stream which diffuses the slowest, and Ï is the angle at which the top and bottom surface of the tube 2 approach each other.
Patent GB-877791-A (GB)
Title: Improvements in and relating to internal combustion engines
IPC: F02B23/08
Filed: 1959-07-07
Abstract: 877,791. Combustion chambers. TATRA NARODNI PODNIK. July 7, 1959 [July 16, 1958], No. 23390/59. Class 7(2). A combustion chamber has a wall 1, Fig. 1, which is partly hemispherical and partly formed by an overhanging projection 6, which parts are respectively, at the T.D.C. position, closely approached by a partly hemispherical projecting portion 7 and a flat portion 5 of the piston crown, the projection 7 having a sloping side 11. The sloping side 11 of the piston projection 7 may be formed with a groove 9, Fig. 2 or as a flat surface; the inclined surfaces 10, 10<SP>1</SP> being provided to clear the valves.
Patent GB-988602-A (GB)
Title: A package for pencils or the like
IPC: A45C11/34
Filed: 1962-06-18
Abstract: 988,602. Packages. A. BARON. June 18, 1962 [June 17, 1961], No. 23402/62. Heading B8C. Groups of pencils or the like are held in hinged members 1<SP>3</SP>, 1<SP>4</SP> preferably moulded in flexible plastics and having recesses with retaining elements 1<SP>7</SP> for each pencil. Fastening means such as an apertured flap 1 1  and stud 1 2  is provided. A cap 2 may cover the pencil points.
Patent GB-1263156-A (GB)
Title: Cameras
IPC: G03B7/16
Filed: 1969-05-08
Abstract: 1,263,156. Photographic apparatus. CANON K.K. May 8, 1969 [May 9, 1968], No.23467/69. Heading G2A. A camera has an exposure control circuit which includes a switch 6 that in a first condition (closed) adapts the circuit for flash photography and in a second condition (open) adapts the circuit for normal photography, wherein the switch is arranged so as to be automatically closed in response to the attachment of flash-gun to the camera, but otherwise remains open. The camera accessory shoe has a recess containing contact 11 which is engaged by a contact 15 on a protrusion 16 of an appropriate flash-gun to close the switch. Conventional flashguns are not provided with this protrusion, so a ring on the camera having this form of shoe is rotated from an AUTO position to a FLASH position to close a switch 5. Closure of either switch connects a variable resistance 4, coupled with the camera focusing device, into the exposure control circuit. In a camera taking conventional flash-guns only, the switch 6 is appropriately positioned.
Patent GB-164992-A (GB)
Title: Improvements relating to keying wheels and the like to shafts
IPC: F16B3/00
Filed: 1920-08-11
Abstract: 164,992. Hariveõu, P. Aug. 11, 1920. Securing wheels &c. on shafts. - A means for securing wheels, pulleys, sleeves, and rotors of centrifugal pumps, turbines, fans, &c. to shafts comprises the combination with a key of one or two flexible split rings adapted to form abutments for the hubs &c. A key A, securing a hub &c. D to a shaft C, has recesses E, F adjacent to the ends of the part D for the reception of flexible split rings G. Each ring is mounted by sliding it along the shaft and either forcing its free ends against the end of the key A, which may be rounded, or otherwise opening the ring. The rings spring into the recesses E, F, and may then be turned through 180. For security, the gaps in the rings may normally be narrower than the key. and the ends thereof may be clipped together. To prevent rotation, each ring may have opposite the gap a recess to engage the key, the recesses E, F in which may be correspondingly shallower. In one modification, several keys are used, and, in another, the rings G are in two parts hinged together and clipped at the open ends.
Patent GB-941432-A (GB)
Title: Switching arrangement for the electric control of machines
IPC: H01H21/28
Filed: 1959-12-23
Abstract: 941,432. Transformers. K. MAECKER. Dec. 23, 1959, No. 23598/63. Divided out of 941,431. Heading H1T. One or more relays 9 (Fig. 1) for machine control are energized by, or under the control of, a transformer having a primary winding 5 on one limb and at least one other limb 6 carrying a secondary winding 7, a core member 2 adapted to tilt about a pin 3 disposed at right-angles to a longitudinal central plane extending through the core being movable between two positions in one of which a relay 9 is energized. An extra secondary winding feeding another relay may be arranged on a further limb 10. Fig. 4 shows the transformer enclosed in a plastic or aluminium " limit switch " housing 20, the movable yoke 2 being operated by a fork 16 which is actuated through a lever and cam arrangement by a roller 21 when the latter is struck by a moving part on the machine to be controlled. The movable yoke may be moved manually. It may be moved gradually by a toothed segment and gear-wheel (Fig. 8, not shown) or the snap - action caused by the magnetic attraction may be increased by a spring (Figs. 5 and 5a, not shown). The relay may be designed for A.C. and shunted by a capacitor. Instead of feeding the relay(s) direct the transformer may energize or control the energization of the control winding of a magnetic amplifier (Fig. 7, not shown).
Patent GB-578327-A (GB)
Title: A pot incorporating a whisking device for preparing cocoa and other beverages
IPC: A47J43/10
Filed: 1944-11-27
Abstract: 578,327. Cocoa pots. HENRY, A. Nov. 27, 1944, No. 23637. Convention date, Feb. 11. [Class 129] A stirring device for cocoa, or other beverage, comprises vanes 9 on a spindle 8, rotated by means of a handle 11, and co-operating with fixed radial vanes 15. The pot 1 is preferably octagonal in shape having a tightfitting lid 5. The handle 11 may unscrew off the spindle 8, and the vanes 9 removed for cleaning purposes. The vanes 15 are preferably slidably fixed between rods 8 and 13. The pot may be graduated to show the number of cups, pints, or the like contained therein. A heating element may be included in the pot, or external heating means used.
Patent GB-1407584-A (GB)
Title: Purification of mercury
IPC: C22B43/00
Filed: 1974-05-29
Abstract: 1407584 Purification of mercury TESSENDERLO CHEMIE SA 29 May 1974 [30 May 1973] 23774/74 Heading C7D A process and apparatus for purifying mercury, particularly that originating from the decomposition of alkali metal amalgams in a vertical decomposer, consists of passing a purifying liquid countercurrent to the mercury flaring in a tube The outlet lock chamber 1 of a vertical decomposer is connected to a fleet topped tubular or U-shaped pipe 2 at an angle to the horizontal, preferably 8-15 degrees. A series of regularly spaced baffles 3 extend from the top of the pipe with their lower edges dipping into the mercury stream. The lower end of the pipe 2 opens into a chamber 4, divided into compartments by circular skirts 6, 7, with a central tube 5 through which the mercury is pumped back to the electrolytic cell. The purifying liquid, e.g. water, or aqueous solution of sulphurous acid or methyl alcohol is introduced into chamber 4 in the annular space between tube 5 and skirt 6, flows in the annular spaces between skirts 6 and 7, then flows up tube 2 countercurrent to the flowing mercury, under the baffles 3 causing the water to pass through the mercury to purify it, to chamber 1 and the vertical decomposer. Air removed from the water in chamber 4 is exhausted via chimney 8.
Patent GB-240471-A (GB)
Title: Improved method of and apparatus for the removal of glass from glass furnaces
IPC: C03B5/20
Filed: 1925-09-23
Abstract: 240,471. Severin, H. Sept. 23, 1924, [Convention date]. Gathering m o l t e n metal. - Relates to a method of dispensing with the rotating tank usually employed with s u c ti o n - gathering machines. According to the invention, the machine gathers through a hole in the wall of the furnace from an area of metal contained within a ring or floater of the usual type, but the thread of metal, which is drawn upwards by the mould, is thrown by the shearing-blade either to one side or to the back of the ring so that it does not fall in the fined metal in the ring. It is preferred to use a floater, shown in Fig. 3, in which the front part 13 of the wall is bevelled or reduced in height to facilitate the throwing of the thread of glass outside the floater. The method may be used with a continuously melting pot, shown in section in Fig. 6, in which metal or batch is charged into a compartment 19, and the glass travels through passages 20 into a refining-compartment 18 and thence through a passage 22 into a gathering-compartment 23. The side walls of the pot are raised, as at 17, to catch the falling threads and to direct the glass, as it re-melts, into the refining-compartment. Specifications 9689/08, 26222/11, and 7891/13 are referred to.
Patent GB-737238-A (GB)
Title: Improvements in or relating to fuel injection or ignition timing regulators for internal combustion motors
Inventor: SCHMITT DESIRE
IPC: F02D1/16
Filed: 1953-08-28
Abstract: 737,238. Timing ignition. ATELIERS DE CONSTRUCTION LAVALETTE. Aug. 28, 1953, No. 23802/53. Class 7(4). [Also in Groups XXIV and XXVIII] A coupling device for varying the timing of ignition or fuel injection comprises a driving member 7 driven from the engine, a driven member 2 coupled to a shaft 1 comprising an ignition timing shaft or a fuel injection pump driving shaft, and a coupling member 8 which is connected to both the driving and driven members 7, 2, by helical splines engaging helical grooves 26, 25, and is moved axially by centrifugal balls 15 to adjust the timing, the axial movement resulting in rotation of the member 8 relative to both the driving and driven members 7, 2. The sleeve 2 is keyed to the shaft 1 and the grooves 25 are of opposite pitch to the grooves 26 so that on axial movement of the spring loaded member 8 by the balls 15 both sets of grooves produce angular rotation in the same direction of the shaft 1 relatively to the driving member 7. The balls 15 are driven by a member 11 fixed to the member 8 and engage a profiled cam surface on a member 13 rotatably mounted on the member 8 and a flat reaction plate 17 rotatably mounted on a member 16 fixed to the sleeve 2. At constant speed both the members 13, 17 rotate with the balls 15 so that wear thereon is reduced. The aperture in the casing 19 through which the member 7 passes is sealed by a packing member 22.
Patent GB-1212341-A (GB)
Title: Improvements in automatic control systems
Inventor: STEGHART PETER
IPC: G05D23/24
Filed: 1966-12-05
Abstract: 1,212,341. Automatic control systems. TECHNISCHE STUDIEN A. G. Nov.24, 1967 [Dec.5, 1966; Jan.18, 1967; May 23, 1967], Nos.54317/66, 2661/67 and 23806/67. Heading G3R. [Also in Division G1] A retroactive system controlling say temperature utilizes a thermal wax type actuator, controlled in a time modulated mode, in which the gland through which the actuating member passes is maintained at a sufficient temperature difference from the heating means to keep the wax adjacent the gland below its melting point thus avoiding leakage. A number of circuits are described in which proportional feedback alone or in combination with integral and/or derivative control is employed. In Fig.1 positional feedback is derived from a potentiometer 118 coupled to the actuator 114 controlling a heating fluid valve 116 and a circuit 105- 108 adds a proportional/integral/derivative signal to the error signal 100. An RC network 109, 110 passes a transient positive feedback signal to give a temporary large output at the actuator for a small error signal, which completely switches the actuator on or off. The output of D.C. amplifier 103 switches on an A. C. supply through 104 to the actuator heater 112, maximum current being limited by a PTC semi-conductor device 115 having an appropriate transition point. In Fig.2 (not shown) two actuators (131, 132) are operated sequentially by a similar circuit through relays (123). A reed relay (203) is employed in another arrangement Fig. 3 (not shown) in which an opposing feedback winding (204) produces a steady oscillation of the relay. In a modified form of Fig.1 components 102-111  are replaced by a capacitor (257) Fig. 4 (not shown) which is repetitively charged and discharged, sawtooth fashion, to produce time modulation of the actuator current, which charging is varied by the error signal through a potentiometer (259) to produce proportional control. An RC network (255- 256) will add integral control. In Fig.8 (not shown) the sensing element (510) is fed with say positive half waves of an A.C. supply and the actuator (518) is energized with the negative half waves, such arrangement requiring only two leads each to the actuator and sensitive element. Feedback is by an element (521) sensitive to actuator temperature. A simple arrangement for domestic heating utilizes two elements (307, 309) Fig. 5 (not shown) of a bellows operated switch. The actuator heating means may have a discrete heating element or the actuator body may act as the heater, or the wax may be of an electrically conductive type. The wax should also have poor thermal conductivity so that while a volume near the heater is molten, that near the gland is relatively solid.
Patent GB-801766-A (GB)
Title: Improvements in or relating to producing alumina
Inventor: BLOCH HERMAN SAMUEL
IPC: C01F7/428
Filed: 1956-08-02
Abstract: Alumina is produced by reacting sub-divided metallic aluminium of at least 99.5 per cent purity with water maintained in the liquid phase at a temperature in excess of 120 DEG  C. but below 374 DEG  C. until the major portion of the metal has been converted to alumina.  The water employed must be distilled or deionized and the reaction is effected in the absence of promoters.  Gibbsite is produced if the temperature is from 120 DEG  to 250 DEG  C. whilst bohmite is produced at higher temperatures.  According to a typical example aluminium chips of greater than 99.9 per cent purity were added to distilled water and placed in an autoclave which was heated to 300 DEG  C. after having been flushed with nitrogen and sealed.  A maximum pressure of 165 atmospheres was reached and the white granular gamma alumina monohydrate product was calcined at 650 DEG C. to give gamma alumina of an average crystallite size of 5 to 10 microns.  Further examples relate to the production of gibbsite and mixtures of bohmite and gibbsite.