baber/WOPTO huggingface dataset:
Patent GB-1414374-A (GB)
Title: Process for the condensation of dihydroxy organosilicon compounds
IPC: C08G77/08
Filed: 1973-01-18
Abstract: 1414374 Condensing silanolic organosilicon compounds over aluminium metal WACKERCHEMIE GmbH 18 Jan 1973 [18 Jan 1972] 2728/73 Heading C3T Linear organosilicon compounds (including diorgano-silane diols) containing Si-bonded OH groups and at least 0À99 Me radicals per Si atom are condensed, without equilibration, by heating them at 100-300‹ C. in the presence of bright or oxide-covered aluminium or with condensed organosilicon compounds previously prepared by this process and from which the solid aluminium has been removed. Preferably the organosilicon compounds are polysiloxanes of viscosity 30-1000 cS/25‹ C. in which at least 80% of the organic radicals are methyl radicals, any others being vinyl or phenyl radicals. The Al may be fresh or oxidized by normal atmospheric action, and may be an alloy containing at least 85% Al, and may be coating on a support. The organosilicon compound previously treated with Al, when used as condensation catalyst itself, may amount to 1-99 wt. per cent of the total organosilicon compound. Preferably the catalyst has less than 1 m.<SP>2</SP> of Al surface per gram, and the organosilicon compound is present in amount 2-200 g. per cm.<SP>2</SP> of Al surface. In Example 1 a polydimethylioxane diol of 100 cSt/25‹ C. is heated for 12 h. at 170‹ C. in an Al/Mg/Si alloy vessel. In Examples 2-5 a polydimethylsiloxane diol of 130 cSt/25‹ C. is heated with commercial Al powder of 5 m.<SP>2</SP>/g. or 10 cm.<SP>2</SP>/g at 170‹ C., for 2 h. at <1 mm. Hg using 1 wt. per cent of Al, or for 5 mins. using 10 wt. per cent Al, after which the Al is removed and the product is heated with fresh polysiloxane for 3 h., or for 1 h. at <1 mm. Hg, or for 8-15 mins. (dwell time) in a twin screw reactor. The products have viscosities of 3000-800,000 cSt/25‹ C. or are gums.
Patent GB-374092-A (GB)
Title: Improvements in ball-striking appliances for games and sports
IPC: A63B59/00
Filed: 1931-01-28
Abstract: 374,092. Bats and other ball-striking appliances for games. PAUL, P. V., 7, Burke Street, West Concord, Sydney, Australia. Jan. 28, 1931, No. 2734. [A Specification was laid open to inspection under Sect. 91 of the Acts, March 8, 1931]. [Class 132 (ii).] Cricket and baseball bats, hockey sticks, croquet mallets and similar ball-striking appliances are constructed of several strips of wood or other suitable material firmly secured together by means of an adhesive to constitute one or more layers or laminations, and some or a.ll of the strips are formed with bevelled, chamfered or inwardly-inclined adjoining or abutting edges or sides 15, Fig. 2, 16, Fig. 4, 28, Fig. 6, each edge presenting a single plane face to the adjacent edge to provide a relatively broad contacting surface and prevent the effect of the blow being taken entirely by the adhesive. Willow, lightwood, ash, or hickory may be employed, and intervening layers of green hide, three-ply wood, rubber or canvas may be inserted. The strips are preferably rolled or compressed before assemblage.
Patent GB-761790-A (GB)
Title: Microwave power splitting junctions
IPC: H01P1/02
Filed: 1954-01-29
Abstract: 761,790. Microwave impedance networks. STANDARD TELEPHONES & CABLES, Ltd. Jan. 29, 1954 [Feb. 2, 1953], No. 2746/54. Class 40 (8). A microwave power-dividing junction comprises three arms of which two consist of transmission lines of the line-above-ground " type described in Specifications 704,050, 708,601 and 761,764. In the junction of Figs. 1, 2, power propagated in waveguide 4 is divided equally between arms 5, 6 of the " line-aboveground " type having a continuous common " line " conductor 2 supported on a sheet of dielectric 3. " Ground " conductors 1 are connected to the walls of the guide which is apertured at 10, 11 to receive the lines 5, 6. Matching is obtained by means of an adjustable shortcircuit 7 and a special configuration 12, 13 of the line conductor 2. In the junction of Figs. 4, 5 a part 1a of the ground conductor 1 forms a terminal wall of the waveguide 4. The line conductor is modified at 17, 18 where it passes through the guide 4 and a transformer section 19 projects along the axis of the guide. The junction of Figs. 6, 7 (not shown), is specially designed to divide power from arm 5 between arms 4 and 6. The transformer section and the modified portions of the line conductor 2 are in this case arranged asymmetrically. To obtain equal division of power regardless of which branch constitutes the source the junction of Fig. 9 is provided with a transformer section in the form of two crossed conductors 25, 26 whose ends may be connected to the walls of the guide 4 and whose centre portions are disposed in contact with the conductor 2. A probe 27 projects into the guide 4. Fig. 10 shows a method of connecting arms 5, 6 to a resonator 30 or to a waveguide or coaxial line. A coupling probe 35 connected to the line conductor 2 projects through aligned apertures in the dielectric layer 3, ground conductor 1 and resonator wall 33 into the resonator.
Patent GB-179240-A (GB)
Title: Improvements in electrical heater resistance elements
IPC: H05B3/26
Filed: 1921-01-21
Abstract: 179,240. Reynolds, R. W. Jan. 21, 1921. Heating by electricity. -An electric beating- resistance of the type applied as a resistant film to an insulating support comprises a mixture of powdered graphite and chemically precipitated silicic material, the mixture being painted on or otherwise applied to the support and being provided with terminal wiring attachments. The insulating support may comprise an enamelled metal plate such as the bottom of a kettle or a strip of mica or similar material permanently or detachably attached to a heating-device such as a kettle or water-boiler. The silicic material may be aluminium silicate precipitated from a solution of sodium or potassium silicate, preferably of water-glass, by the addition of a solution of an aluminium salt such as the sulphate, or may be precipitated from an alkali silicate solution by the addition, for instance, of solutions of salts of alkali earth metals, iron, or zinc. The precipitate i; washed, a minor proportion of alkali silicate such as water-glass may be added together with the powdered graphite, and the mixture is painted on to the support, preferably in several layers, and is then dried or baked. In the form shown, the metal plate A is coated with an insulating enamel B and then with the resistance mixture C, terminal wires F insulated by beads G being soldered or otherwise secured to strips D of metal gauze, held in electrical contact with the film C by an edging E of resistance material painted on over the edge of the strips D.
Patent GB-909837-A (GB)
Title: Method of and apparatus for expanding passageway panels on one side
IPC: B21D26/059
Filed: 1959-01-26
Abstract: 909,837. Making heat-exchanger panels; stamping. REYNOLDS METALS CO. Jan. 26, 1959 [Jan. 29, 1958], No. 2811/59. Classes 83 (2) and 83 (4). A method for expanding a pressure-welded passageway panel on one side comprises applying a holding liquid under pressure against one face of an unexpanded panel to press its other face tightly against a rigid surface, introducing an expansion liquid under higher pressure into the panel to expand its passageway system on the said one face while the other panel face is held against the said surface thereafter reducing the pressure of the expansion liquid until it reaches a value neutralizing the pressure of the holding liquid and then simultaneously releasing both liquid pressures. Apparatus for carrying out the method comprises an expansion press having an upper flat movable platen 3 and a lower stationary platen 4 provided with a holding pressure cavity encircled by a sealing ring 5; an hydraulic system having a motor 6 for opening and closing the press and, for expanding the panel, a processing section including means for supplying holding and expansion liquid pressure; and a control system having (a) a manually-actuated electrical closing circuit for closing the press, (b) a holding circuit operating, in response to the hydraulic pressure which holds the press closed, means for supplying the holding liquid pressure to the cavity, (c) an expansion circuit, responsive to a predetermined holding pressure, to supply expansion liquid pressure to the passageway system of the panel, (d) an electrical timer circuit arranged to be closed and energized in response to a predetermined expansion pressure and to operate when energized by ticking off a predetermined time interval, e.g. 2 to 3 seconds before terminating the expansion operation, and (e) means for thereafter releasing the hydraulic pressures according to the invention by operating a dump valve 26 to reduce the expansion pressure (approximately 3000 p.s.i.) to the holding pressure (approximately 1000 p.s.i.) whereupon a check valve 30 connects both systems together, thus causing them to lose pressure at the same time. Reference has been directed by the Comptroller to Specification 795,099.
Patent GB-1528643-A (GB)
Title: Phase locked loops
IPC: H03L7/12
Filed: 1976-01-26
Abstract: 1528643 APC systems; saw tooth generators; threshold circuits MOTOROLA Inc 26 Jan 1976 [10 March 1975] 02925/76 Headings H3A and H3T A phase locked loop comprises a phase detector 11 responsive to a reference signal from 10 and the output of a controlled oscillator 13 frequency converted at 14 to provide a control signal for 13 and an arrangement 12 including an integrating low pass filter and a circuit 23 connected to and cooperating when activated with the filter for providing a substantially linear ramp or sweep voltage as control signal for the oscillator 13. The low pass filter may include (see Fig. 3A) an operational amplifier and the circuit 23 may be a fixed current sink enabled during unlock conditions of the loop as detected by a quadrature phase detector 21 and a lock detector 22 for alternately applying fixed currents as step inputs to the input terminals of the operational amplifier so that the integrated output is a linear ramp voltage. The circuit may also include a ramp generator driver 25 responsive to an out of lock condition to close a gate 26 and responsive to a lock condition to open the gate only at the end of a ramp period so that the VCO output is applied to RF amplifiers only after they have been fully turned on. The ramp generator 25 comprises a capacitor 135 (see Fig. 3B) discharged by a transistor 130 when an input at 69 goes down to turn transistor 124, 126 off. When the input at 69 goes up, the capacitor 135 charges up via 137, 133, 132,131 and 136 to provide a ramp output. A threshold detector 22 (see Fig. 3B) is constituted by compound transistors 92, 95; 93, 98 connected in a differential amplifier form. When the voltage difference at terminals 90, 91 exceeds a predetermined threshold as determined by a diode 97, transistors 93, 98 conduct and the output terminal 68 is grounded via transistor 104. When the voltage difference is less than the threshold, transistors 92, 95 are rendered conducting and transistor 104 is turned off so that the output at 68 is at a higher voltage level.
Patent GB-565280-A (GB)
Title: Improvements in or relating to brakes
IPC: F16D65/56
Filed: 1943-02-22
Abstract: 565,280. Brakes. BENDIX AVIATION CORPORATION. Feb. 22, 1943, No. 2928. Convention date, April 20, 1942. [Class 103 (i)] A brake comprises a pair of brake shoes each arranged to anchor at either end according to the direction of rotation of the brake drum when applied by a pair of hydraulic motors acting upon the shoe ends, means for adjusting the shoes to compensate for wear and alternative mechanical applying means including a thrust member which serves both as an anchoring and adjusting means for a shoe. Idle movement in the mechanical applying means due to adjustment of the shoes is thus avoided. The shoes 13, 14 are normally applied by a pair of hydraulic cylinders 15, 16 and the anchors for the lower ends of the shoes are respectively a stop 22 fixed to the back plate 12 and the head 23 of a pin 24 that is adjustable by screwing into a fixed block 25. The anchors for the upper ends of the shoes are respectively a fixed member 27 and the head 29 of a pin 30 adjustable by screwing into the head 31 of a rod 33 slidable in a fixed block 32 upon which the head 31 is adapted to abut. The rod 33 acts also as a thrust member of the mechanical applying means which includes also a link 42 engaging at 43 the shoe 14 and a lever 35 connected to the rod 33 by a pin 37 and to the link 42 at 41. The lever extends through a slot 36 in the back plate and is connected at 45 to an operating cable. The connection between the lever and the rod 33 may instead comprise bearing surfaces formed on the inner edge of the lever and at the bottom of the slot in the rod which receives the lever. It is stated in the Specification as open to inspection under Sect. 91 that the pistons of the hydraulic cylinders follow up the shoe adjustment.
Patent GB-524391-A (GB)
Title: Improvements in or relating to telegraph systems
IPC: H04M11/06
Filed: 1939-01-28
Abstract: 524,391. Code telegraphy. LATIMER, K. E., and TERRY, V. J. Jan. 28, 1939, No. 2998. [Class 40 (iii)] Sub-audible telegraph signals which may be sent over a telephone line are produced by starting and stopping a multi-vibrator the frequency of which is so related to the telegraph frequency that each signal impulse contains a whole number of cycles. The circuit shown generates oscillations in known manner with the contact of the sending relay SR in its left hand position and these oscillations are amplified in a quiescent push-pull amplifier V3, V4 which also limits their amplitude. When the relay contact moves to the right the generation of oscillations is prevented by the connection of the grid of one of the multi-vibrator valves to battery instead of to the anode of the other.
Patent GB-620921-A (GB)
Title: Improvements in reduced scale training artillery
IPC: F41A33/00
Filed: 1947-01-31
Abstract: 620,921. Toys. MANEVILLE, G. L. DE. Jan. 31, 1947, No. 3079. Convention date, Jan. 19, 1940. [Class 132 (iii)] For training gunners in artillery a model gun has its "barrel" G formed with a groove C and the projectile, Figs. 5 and 6, has a fin K for sliding in the groove, the fin acting thus to guide the shell on the gun and subsequently acting as a stabilizer during flight. The breech-block M, which also slides in the groove, is acted upon by rubber bands L whose tension can be adjusted. The gun may be mounted on a platform formed with stops for the gun carriage wheels, with pins for anchoring springs F on the carriage, and with a graduated arc for indicating the direction of aim. The projectiles may have nose fuzes or they may have base fuzes as shown in Fig. 5.
Patent GB-703683-A (GB)
Title: Improvements in and relating to the production of oxygen-containing compounds
Inventor: HARVEY PHILIP GEOFFREY
IPC: C07C29/16
Filed: 1950-02-07
Abstract: Propionaldehyde and propanol are made by reacting ethylene with CO and H2 in the liquid phase at 140-180 DEG C. under a total pressure of 200 to less than 300 atmos. gauge in the presence of a cobalt compound dissolved in the liquid medium, the partial pressure of CO being 55-150 atmos. gauge, and the molar ratio CO:H2 not above 1:1. Temperatures of 160-170 DEG C. are preferred.  The ratio of CO to H2 is preferably not above 1:3 when corrosive equipment is used. Particularly preferred ratios of CO:H2 are 1:4 to 1:1.  Liquid phase conditions are achieved by the use of a high boiling inert medium or an olefine liquid under the reaction conditions such as saturated butene trimer, C8 olefines, e.g. di-isobutene and higher olefines. Specified catalysts are soluble cobalt salts such as the naphthenate, acetate, non-anoate, laurate, oleate, a -butoxybutyrate or hexahydrobenzoate.  Cobalt carbonyl or hydrocarbonyl may also be obtained in situ, e.g. by the use of cobalt metal or supported cobalt, e.g. on kieselguhr.  Total pressures of about 250 atmos. gauge are preferred when at 140-180 DEG C. the CO:C2H4 ratio should be above 1.5:1, preferably at least 2:1.  Desirably the reaction space should be full of liquid.  Products may be separated by distillation in the presence of an anti-oxidant such as 2, 4-dimethyl-6-tertiary butyl phenol.  Alternatively the product may be hydrogenated to propanol, after catalyst decomposition, at, e.g. 250 atmos. gauge and 250 DEG C. over copper on chromium or copper on zinc oxide.  At the higher temperature and pressure ranges diethyl ketone may also be obtained, e.g. at above 170 DEG C. and 250 atmos. gauge. In examples ethylene is treated in (1) di-isobutene with H2 and CO in the ratio of 3:1 at 250 atmos. and 160 DEG C. in the presence of cobalt naphthenate to yield C3 alcohol and aldehyde and C3 alcohol and aldehyde and in (2) saturated butene trimer is used in place of di-isobutene the products being C3 alcohol and aldehyde. Specification 679.366 is referred to.
Patent GB-215421-A (GB)
Title: Improvements in apparatus for the conversion of motion according to one law into motion according to another law
IPC: F16H35/16
Filed: 1923-02-02
Abstract: 215,421. Barr & Stroud, Ltd., and Stroud, W. Feb. 2, 1923. Modifying scale of readings.-In means for for converting motion according to one law into motion according to another law, applicable for the conversion of a scale of ranges into a scale of range-finder working-head movements or of gunsight elevations, the motions is conveyed by two or more mechanical routes each of which is active in turn while the remainder of the mechanism is held stationary. The shaft 1, Fig. 1, moving into the scale of ranges is secured to a planet spindle on which rotates a pinion 2 gearing with loose bevel wheels 3, 4 secured to wheels 5, 6, which. through mechanism 9 - - 14 of the kind described in Specification 133,974, drive bevel wheels 15, 17 gearing with a planet wheel 16 carried in a wheel 16 geared to the spindle 20 moving with the working-head of the range-finder. The mechanisms 9, 10, 11 and 12, 13, 14 are so designed that one provides for the conversion in ranges say from 2000 to 8000 yards while the other operates between 8000 and 32000 yds. A screw 23 is rotated by the shaft 1 to move a brush 25 over the two parts 26, 27 of a contact drum insulated by a strip 28 and arranged in electromagnetic circuits adapted to station the wheels 5, 6 respectively. The brush 25 either bridges the strip 28 to top both wheels 5, 6 momentarily or engages the strip only to free both wheels. To prevent shock in the former case the spindle of the planetwheel 2 is connected to the shaft by spring means of the kind described in Specification 129,124. In a mechanical stationing device, a gate adapted to engage alternatively with the wheels 5, 6 is operated by a rack shifted in either direction by a iounting-train of one-toothed wheels driven by the shaft 1. Auxiliary frictional driving- connections may be arranged between the shafts 1, 20 to relieve the driving strain. Flat spiral gearing of the kind described in Specification 129,345 supplemented by a clipping frictional drive may replace the gearing 9 - - 14. In driving through three or four routes, one or both of the wheels 5, 6 drives epicyclic gears, as shown in Fig. 4, the driven wheels 55 - - 58 of which drive through the necessary variable speed mechanisms on to epicyclic gears so arranged as to bring together the motions transmitted by the different routes. Specifications 11772/11, 618/14, and 15294/14 also are referred to.
Patent GB-534424-A (GB)
Title: Improvements in combustion chambers for internal combustion engines
IPC: F02B19/14
Filed: 1940-02-19
Abstract: 534,424. Oil engines. HOCKE, E. Feb. 19, 1940, No. 3152. Convention date, April 1, 1939. [Class 7 (iii)] In a compressionignition engine having a spherical combustion chamber 3 in which a swirling movement of the air charge takes place, a contraction of the combustion chamber is formed by two protuberances 8 symmetrically arranged on the axis of rotation of the charge and terminating in substantially pointed ends which become incandescent. The chamber 3 is connected by a port 4 to the engine cylinder and is fitted in the cylinder cover or partly in the cover and partly in the cylinder block.
Patent GB-198404-A (GB)
Title: Improvements in automatic weighing apparatus
IPC: G01G13/00
Filed: 1922-02-03
Abstract: 198,404. Brian, J. C. Feb. 3, 1922. Automatic-feed weighers.-Relates to automatic feed weighers, and comprises a lever hanging freely from a pivot on the frame and functioning alternatively to lock the feed-gate and the discharge mechanism of the weighing-receptacle. As shown in Fig. 3, the invention is applied to a machine having a non-oscillating receptacle. A lever F hangs freely from a pivot F5 on the frame and is adapted to engage a pin A2 on the feed-gate and an extension D2 on the discharge-gate lever D. In the event of the discharge-gate lock C being disengaged while the feed-gate is open, the discharge gate is held shut by the engagement of the extension D2 with the lever F, displacement of which is prevented by the pin A2. When the discharge gate is open the extension D2 engages the face F4 of the lever F and the feed-gate is prevented from opening by the engagement of the pin A2 with the face F3. As applied to a machine having an oscillating receptacle, Fig. 6, the lever F acts in a similar manner, being adapted to engage a pin N2 on the feed-gate N and a pin Q on the weighing-receptacle.
Patent GB-287281-A (GB)
Title: Improvements in or relating to the manufacture of hydrogen peroxide
IPC: C01B15/03
Filed: 1927-02-04
Abstract: 287,281. Vidal, A. E., (Riedel Akt.-Ges., J. D.). Feb. 4, 1927. Distilling hydrogen peroxide. - In distilling hydrogen peroxide from its solutions, from persulphuric acid or from acid solutions of persulphates, the liquid is drawn upwards from a vessel a through a capillary tube b and ves. sel c heated by a jacket d or by internal electric or other heaters. The mixed vapours and liquid separate in an upper vessel e from which the liquid passes down an outlet g while the vapours pass up through an outlet f which is connected to a vacuum pump. The apparatus may be formed of ceramic materials, tantalum or chromium-nickel alloy. The internal heaters may be made of the same alloys.
Patent GB-609831-A (GB)
Title: Improvements in and relating to dry-plate rectifiers
IPC: H01L25/07
Filed: 1946-02-01
Abstract: 609,831. Asymmetrical resistances. GENERAL ELECTRIC CO., Ltd., TURNER, H. C., CHAMBERLAIN, J., and REIK, H. Feb. 1, 1946, No. 3277. [Class 37] A dry-plate rectifier assembly, Fig. 1, compriser rectifier elements 10 housed within a sleeve of insulation 14 and between conductive end pieces 15 and 16, inserted into the sleeve 14, a sheathing of plastic material 18 being moulded around the sleeve and the end pieces in a manner securing these end pieces to the sleeve and hermetically sealing the sleeve. A spring 13 and spacing members 11 and 12 co-operate to position the rectifier elements. In an alternative arrangement, Fig. 2, end-pieces 15<1> and 16<1>, in the form of cups, surround the sleeve 14. A terminal wire 28 projects into a cavity 30 of the end piece 16<1> and is fixed therein by solder 23 providing a surface with which an electrically - conductive spacing member 12 makes contact. This latter arrangement may be used at both ends if the end pieces are of non-conductive material. The plastic sheathing 18 may be a thermo-plastic known as " Polythene " or a thermo-setting plastic material. The moulding may be carried out on the transfer principle with pre-heating by a highfrequency current.