baber/WOPTO huggingface dataset:
Patent GB-1099087-A (GB)
Title: A process for producing ªð-allyl complexes
IPC: C07C51/14
Filed: 1966-03-15
Abstract: A p -allyl complex or mixture of complexes is prepared by reacting at least one salt of a noble metal of Group VIII and at least one allylic compound with at least one olefin in alcoholic solution, at least one other metal salt optionally being present. The Group VIII metal salt is preferably a divalent palladium halide and may be mixed with an alkali metal or alkaline earth metal salt (preferably halide).  The allylic compound is preferably of formula <FORM:1099087/C2/1> where R1, R2, R3 may be a hydrogen atom, a hydrocarbyl group which may be halosubstituted and is preferably an alkyl group with at most 5 carbon atoms, R1 and R2 may be linked to form a divalent hydrocarbyl radical that may be halo substituted and R1 may be double bonded to its adjacent carbon, the H atoms being absent.  X may be halo, cyano, acyl, hydroxy, alkoxy, mercapto, mercaptoalkyl, acyloxy, or oxo, the H atom being absent in the latter case.  Preferably the allylic compounds have from 3 to 8 carbon atoms and only one carbon-carbon double bond.  The molar ratio of palladium salt to allylic compound is between 4:1 and 1:10.  The alcohol (or mixture of alcohols) are preferably saturated acyclic primary alcohols with at most 8 carbon atoms. They may be mixed with other solvents such as hydrocarbons, ketones, ethers, nitriles and water. Methanol alone is the preferred solvent. The olefin is an acyclic monoolefinic hydrocarbon with up to 6 carbon atoms and is preferably ethylene.  It is bubbled into the reaction mixture which is maintained at a temperature between 0 DEG  and 50 DEG  C. under normal pressure and an atmosphere of an inert gas such as argon, helium or neon or a mixture of these.  The compound formed is extracted by known processes. The compounds may be used as catalysts, e.g. in the process of Specification 1,080,867.
Patent GB-769950-A (GB)
Title: Improvements in or relating to processes and apparatus for centrifugal casting
IPC: B22D13/10
Filed: 1955-04-19
Abstract: 769,950. Casting-processes. ELECTRIC STEEL FOUNDRY CO., [formerly ELECTRIC STEEL FOUNDRY]. April 19, 1955 [July 2, 1954], No. 11306/55. Class 83 (1). In a centrifugal-casting process, an annular moulding-core having a radial recess is mounted in the mould and spaced from one end thereof, the molten-metal is poured into a reservoir at said one end and restrained therein until the metal has attained the peripheral speed of the mould, and is thereafter released from the reservoir to flow longitudinally of the mould in a thin annular stream along the inside diameter of the core. The mould 10 comprises an annular-core 18, a control-core 19 having openings 21 therein, and a number of moulding- cores 22 having radial recesses or mouldcavities 25. The openings 21 are preferably inclined at an angle of up to 45 degrees from the horizontal, or a central opening 23 serves as a gas-vent. A ring 20 adjacent the core 19 is preferably of hard sand or other erosionresistant material. In operation, the core 19 restrains flow of metal from the reservoir 34 until the depth covers the openings 21. The metal then advances along the cores 22, filling each mould-cavity in turn, a string of castings connected by an annular runner being thereby produced.
Patent GB-237996-A (GB)
Title: A machine for manufacturing concrete blocks and the like
IPC: B30B11/02
Filed: 1924-05-08
Abstract: 237,996. Enticknap, E. G. May 8, 1924. Reciprocating-mould-table machines; rotarymould-table machines; stamping-machines. - A machine for moulding building-blocks from concrete &c. comprises a top press having a ram reciprocated at high speed by mechanical or fluid means and a bottom press furnished with a ram adapted to be raised by mechanical or fluid means to bring a charged mould into range of the top press. As shown, the upper ram on plate 1 is carried by a hollow piston 18 reciprocated by a. crank on a drive shaft 2, and the bottom plate 4 is carried by a ram working in an hydraulic cylinder 5. The machine framing comprises hollow standards 15 connected by a pipe 24 and forming an oil reservoir, an upper cross beam 16 housing the piston 18 and guides 13, 20 for the plate 1, and a lower cross beam 17 supporting the cylinder 5. A pump 7, operated by an eccentric 28 on the shaft 2, draws oil through a pipe 8 and forces it into the cylinder 5 through, a pipe 29 fitted with a check valve 10 and relief valve 27. A valve 9 controlled by a hand lever 25 puts the cylinder 5 into or out of operation. The mould 26, which is preferably of the tilting type, is furnished with rollers running on straight or circular rails and is brought into the press after filling. On starting the shaft 2 and closing the valve 9, the mould is raised by the plate 4 into range of the plate 1. The lift of the plate 4 is limited by a fork or member 11 on a guide rod 22 engaging a nut 12 on the spindle 23 of a out out valve 13. The nut 12 is adjustable to vary the thickness of the block. The plate 1 may be subdivided into two or more parts operable successively. The cylinder 5 may be connected with an accumulator to give a quick lift to the mould.
Patent GB-329115-A (GB)
Title: Improvements in machines for raising railway tracks
IPC: E01B29/04
Filed: 1929-04-13
Abstract: 329,115. Nordberg Manufacturing Co., (Assignees of Talboys, H. H.). Feb. 16, 1929, [Convention date]. Plant for laying track. - A machine for raising railway tracks consists of a carriage with two jacks operating a ground shoe, the jacks lifting a frame structure connected to the carriage without exerting pressure on the carriage. The carriage consists of angles 22, 23, Fig. 1, tied by channels 24 connected by girders 25 carrying yokes 30. Each yoke carries an insulated rail-engaging dog 29 insulated from links 38 connected to a handle 45 operating the dogs and engaged by brakes 46, 47. The yokes 30 are also connected by tie rods 57, 77 to members 57 each carrying a nut engaging the jack-screw 65 provided at each end of the ground shoe 68. Each nut has a gear wheel 63 meshing with a spur wheel 116 on a stub shaft 115, Fig. 11, carrying a member 114 with two sets of teeth 114<a>, 114<b> in constant mesh with bevel wheels 93 of unequal diameters. Either of the wheels 93 may be clutched to the propeller shaft 89 by a plate 97 carried by pins 98 mounted in a spider 96 integral with a wheel 93. The plate 97 floats between a hub 101 fast on the shaft 89 and a ring 102 sliding on the hub 101 and actuated bv cams 103. These cams are operated by links 105 from a sliding hub 106 actuated by yokes 113 adjustably secured on a rod 108 held central between bearings 109 by springs 111 and moved into either clutch position by a pivoted handle 117. This mechanism enables the track to be lowered about twice as quickly as it is raised. Shafts 89 are rotated by sprockets 88 driven by an internal-combustion engine 81 governed by a lever 121 mounted for convenience on one of the handles 117. The shafts may be provided with hand-cranks for manual operation. To hold the carriage stationary while in use, the operator's platform 129, Fig. 1, is clipped to a girder 25 and is hung from a shaft 126 carrying brake blocks 125 normally held clear of the wheels 17 by springs 128. The wheels 17 have wooden centres 21 to insulate them from the axles' 18. The carriage carries a sighting- target 139, Fig. 1, mounted on a rod which either rests on the head of the rail 15 or is rotated within the carriage and held above the rail.
Patent GB-681685-A (GB)
Title: Improvements in or relating to drives for the reciprocating type-bed of a two-revolution high-speed press
IPC: B41F3/58
Filed: 1951-05-16
Abstract: 681,685. Printing machines. MASCHINENFABRIK AUGSBURG-NURNBERG AKT.- GES. May 16, 1951 [May 17, 1950], No. 11479/51. Class 100 (ii). [Also in Group XXIV] Mechanism for reciprocating the type bed of a two-revolution high-speed press comprises a gear sector 19, Fig. 2, in mesh with a rack 20 on the bed 9 which is oscillated by a gear sector 26 on the same shaft 22. The sector 26 is alternately engaged by gear sectors 29, 29<SP>1</SP>, Fig. 3, on gears 30, 30', which are driven in opposite directions from the driving shaft of the machine, the two sectors 29, 29<SP>1</SP> being arranged to face inwardly and the sector 26 being wide enough to accommodate both these driving sectors. Pairs of pins 31 and 31' are also provided on the gears 30, 31 respectively at the ends of the sectors 29, 29<SP>1</SP> and co-operate with cycloidal recesses 28 at the ends of the driven sector 26 for effecting the retardations and accelerations at the end and beginning of each stroke.
Patent GB-761395-A (GB)
Title: Diisocyanate-modified polyester elastomers
IPC: C08G18/10
Filed: 1954-04-21
Abstract: Polyesters modified with an excess of di-isocynate are reacted with a glycol containing, in addition to hydroxy groups, one or more other groups reactive with isocyanates.  When such a group is an urethane group the reaction is accelerated.  The glycol may be added to the polyester before or after the isocyanate reaction in a quantity less than or equal to that equivalent to the free isocyanate groups in the modified polyester.  When less than the equivalent amount of glycol is used, the product must be shaped during the reaction, but with the larger quantity the product may be stored and 1 to 5 per cent by weight of the product of a di-isocyanate is added prior to moulding. As glycols may be employed, urethane glycols, e.g. reaction products, containing two urethane groups, of diamines and glycol carbonate, and glycols containing esterified carboxyl, carbonamide, sulphonamide, guanidine, hydrazide and cyanamide groups.  In examples: (1) an hydroxy terminated glycol adipic acid polyester is dried, reacted with an excess of diphenyl methane diisocyanate and the product mixed with hexamethylene - dibutanol - diurethane, cast into moulds and heated for 24 hours at 100 DEG  C.  (2) Similar to (1) but using hexamethylene-di(b -hydroxyethyl)-diurethane.  (3) Similar to (1) but using glycol-adipic acid polyester, 1.5 naphthalene di-isocyanate and adipic acid diethanolamide.  (4) Similar to (1) but adding the glycol to the polyester before reaction with the di-isocyanate.  (5) Similar to (4) but using a smaller amount of di-isocyanate and incorporating additional di-isocyanate prior to moulding.  The subject matter of Specification 760,140 is disclaimed.  Specification0 700,608 and 700,610 also are referred to.ALSO:Urethane glycols are prepared by reacting diamines or hydrazine with glycol carbonate according to the equation <FORM:0761395/IV(b)/1> With hydrazine (x = 0 in the above formula), the product is hydrazo dicarboxylic acid di-b -hydroxyethyl ester of the formula HOCH2CH2.OCONH.NHCOO.CH2CH2OH.
Patent GB-701933-A (GB)
Title: Improvements in or relating to control switches for electric circuits
IPC: H01H27/10
Filed: 1951-05-18
Abstract: 701,933. Mechanical switches, without quickaction. RORKE, M. May 7, 1952 [May 18, 1951], No. 11732/51. Class 38(5) A switch, which may be connected in an ignition circuit, comprises a rotatable selecting member and an actuating member rotatable therewith into a number of positions in at least one of which is a pivoted switching finger movable by axial movement of the actuating member relative to the selecting member. The fingers 13 co-operate with pairs of spring ball contacts 20, selected pairs being connected in series in the circuit by wires (not shown) which pass out from the casing through an aperture 4. The selecting member 35 has a twostart helical thread 42 engaged by a pair of projections 41 on a sleeve 40 connected by a pawl 46 and recess 47 to a member 38 which has slots 39. two of which co-operate with pins 54 to prevent rotation of the member 38. Clockwise rotation of member 35 by a knob 51 thus causes axial movement of member 38 which engages the lower ends of fingers 13 which are thus tilted into the Fig. 3 position wherein contact studs 28 are moved from between the balls on all but one of the fingers. The odd finger is moved to bridge its balls 20 which are connected in series with contacts 7 across the horn circuit so that unauthorized depression of actuating member 8 causes a contact 9 to bridge contacts 7 to sound the horn. The other contacts are reclosed by rotating member 35 until a plate 12 on member 8 is opposite the odd fingers, the member 8 being then depressed to de-energize the horn contacts 7. The member 8 is then released and member 25 is rotated to bring the plate 12 opposite the selected fingers in turn, the member 8 being depressed in each position to move the selected fingers to the closed position, Fig. 1. The member 35 is located in its various positions by ball bearings 37 engaging radial grooves in the surface of a part 34 of the member 35.
Patent GB-302854-A (GB)
Title: Improvements in cigarette and like cases
IPC: A24F15/12
Filed: 1928-04-21
Abstract: 302,854. Green & Co., Ltd., C. S., and Green, C. S. April 21, 1928. Contents, facilitating access to; partitioned cases.-A cigarette case is provided with a fixed inclined or sloping part 6 at one or both ends or at one or more edges so as to be adjacent the ends of the cigarettes &c. and form an inclined guide; to enable the cigarettes to be slid endwise up the incline out of the case. The part 6 extends. at an angle to the bottom of the case and has no flange or projection and it may, as shown, be formed by a separate member or strip secured to the case, or it may be formed by bending down an integral extension of the usual collar or flange of the case or by bending down an integral extension of the body portion of the case. The case may be provided with a transverse partition and with a sloping part at each end opposite the partition.
Patent GB-352949-A (GB)
Title: Improvements in or relating to colour photography
IPC: G03C7/10
Filed: 1930-04-14
Abstract: In a process for the production of a multicolour screen on a film of cellulose or an ester or ether of cellulose, one constituent of a dyestuff or colouring matter is applied to the whole surface and one or more media capable of reacting with the first constituent to form different colouring matters are successively applied in lines or other geometrical patterns.  The third colour may be produced by subsequent dyeing of the whole film or may be applied previously, resist lines being ruled on the surface and the dye bleached from between them to provide spaces for the other colours.  Examples are given of a surface dyed with auramine and coated, with (1) b -naphthol, the lines being ruled with diazotized a -naphthylamine and diazotized dianisidine respectively, and (2) naphthol A.S. the lines being ruled with Variamine blue salt B. and Fast Scarlet salt G.C. It is stated that mixed colours are produced at the intersection of the lines by using excess of the first constituent or by applying the second dye-forming compound before the first reaction is complete.
Patent GB-760983-A (GB)
Title: Improvements in or relating to antifriction bearings
IPC: F16C19/49
Filed: 1954-04-23
Abstract: 760,983. Bearings. SCHAEFFLER, W., and SCHAEFFLER, G., [trading as INDUSTRIEWERK SCHAEFFLER OFFENE HANDELSGES]. April 23, 1954 [April 24, 1953; April 13, 1954], No. 11811/54. Class 12 (1). A combined radial and thrust bearing comprises needle rollers e and balls l having at least one common race ring. A common cage m may be provided or the cages may be separate. The outer or inner race of the ball-bearing may be separate and spaced from the housing or shaft respectively. Alternatively, as shown in Fig. 7, the inner ballrace is integral with the inner race ring 1, but is made of resilient material and is spaced from the shaft 6. In a modification, the outer race is similarly stepped and made resilient. The balls may have threepoint contact as shown in Fig. 8.
Patent GB-774241-A (GB)
Title: Door closer
IPC: E05F3/20
Filed: 1955-04-25
Abstract: 774,241. Door checks; hinges. THUNE,T. April 25, 1955 [June 18, 1954], No. 11815/55. Classes 65 (1) and 65. (2). [Also in Group XXXII] A spring door-closing device with a liquid check of the oscillating vane-type is arranged in the form of a hinge, comprising separate axially - arranged casings 8, 5 for the spring and the check chamber respectively, with a spindle 13 passing axially through the casings and rotatable relatively to the check casing, each casing having a fixing plate for attachment to the door or frame. In the form shown, the upper end of the spring casing 8 is closed by a nut 9 and nut lock 10, in which the spindle 13 is non-rotatably fixed, and its lower end fits over a cup member 7 welded in the upper end of the check casing 5. The spring 11 is attached to the nut 9, which may have several holes to allow adjustment of the spring, and the cup 7. The lower end of the spindle 13 rests in a recess in a cap 6 screwed into the lower end of the check casing 5, and the spindle has, adjacent to the closure members 6, 7, flanges between which is mounted a vane 23 hinged to the spindle and inclined to the radial plane so as to yield to allow passage of liquid in one direction but not in the other. A radial wall 21 fixed to the casing 5 is in sliding contact with the spindle and the flanges 19, 20. Small apertures 28 in the flange 20 allow restricted flow of liquid past the vane by way of the space below this flange when the door is closing. In a modification, the vane 23 is fixed radially to the  spindle, and the vane and the fixed wall 21 have passages through them closed by leafsprings to allow flow in one direction only.
Patent GB-1430487-A (GB)
Title: Permanent magnet rotor for a synchronous motor and method of making same
IPC: H02K15/03
Filed: 1974-03-18
Abstract: 1430487 Electric motors MALLORY TIMERS Ltd 18 March 1974 [16 March 1973] 11827/74 Heading H2A A rotor comprises a permanent magnet 17 mounted about the periphery of a hub made up of at least two sections 18<SP>1</SP>, 18<SP>11</SP> ultrasonically welded together, some of the molten material at the joint having flowed into at least one recess 92, Fig. 2 (not shown), in the permanent magnet so that the magnet is fixed relative to the hub. The rotor shown is that of a single phase synchronous motor and co-operates with a stator having interdigitated poles 10<SP>1</SP>, 11<SP>1</SP>, lanced out of casing parts 10, 11. The motor includes a cam 32 and pawl 34 to prevent rotation in the wrong direction.
Patent GB-1006932-A (GB)
Title: Improvements in strain sensitive apparatus and elements therefor
IPC: G01L1/22
Filed: 1962-03-28
Abstract: 1,006,932. Strain gauges. GENERAL ELECTRIC CO. March 28,1962 [April 20,1961], No. 11970/62. Heading G1N. [Also in Division H1] The active element of a strain gauge is formed from a monocrystalline body of semi-conductor material of isotropic electrical characteristics other than electro-resistivity and has from substantially non-rectifying terminals connected to prints on the body defining the four resistance arms of a unitary bridge. The bridge is so cut relative to the orientation of the crystal that in the plane of the bridge the electro-resistance coefficients are different when measured in directions parallel and perpendicular to the applied strain, and is so formed that it is electrically balanced when unstrained. One element described, incorporated in the strain gauge shown in Fig. 2, is made from N- type silicon cut with the [100] axis in the direction shown. The cars to which the contacts are attached enable recombination before they reach the effective parts of the resistance arms of a minority carriers generated by inevitable slight rectification at the contacts, and thus ensure current symmetry of the unstressed bridge. Minority carrier lifetime may be educed in the contact regions by indiffusion of atoms forming recombination centres. Bridge sensitivity may be enhanced by liminating shunt currents by removing material from the centre of the body, as described with reference to Fig. 3 (not shown), thus leaving the form resistance arms united only at their ends. The resistance element need not be in the form shown. It may be any symmetrical figure, such as a disc, or it may be an asymmetrical figure in which care balancing of the unstressed bridge is achieved by adjusting the thicknesses of the form arms. Attachment of the element to the test piece may be made using adhesives or, for example, if the test piece is a single crystal of semi-conductor material the element may be formed on this by epitaxial growth, thus avoiding the need for separate bonding.
Patent GB-1181395-A (GB)
Title: Anti-dazzle Arrangement for Vehicle Headlamps
Inventor: TANG CHIEH-HSI
IPC: B60Q1/52
Filed: 1967-03-15
Abstract: 1,181,395. Vehicle headlamps. CHIEH-HSI TANG. 15 March, 1967, No. 12090/67. Heading F4R. An anti-dazzle headlamp system in a road vehicle comprises a polarizing filter in the or each headlamp and a further polarizing filter disposed in front of the drivers eyes and adapted to pass light polarized in a plane perpendicular to the plane of polarization of the light emitted by the headlamps, the further filter being movable between an in-use and an out-of-use position and movement of the filter controlling a switch which brings additional headlamp illumination into operation when the filter is in the in-use position. The additional illumination issues from a second set of filaments in the same lamps.