baber/WOPTO huggingface dataset:
Patent GB-629886-A (GB)
Title: Improvements in and relating to control circuits for low pressure electric dischargelamps
IPC: H05B41/19
Filed: 1945-03-26
Abstract: 629,886. Control systems for space-discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. March 26, 1945, No. 7547. Convention date, March 29, 1944. [Class 38 (iv)] Means for operating an electric discharge lamp from A.C. or D.C. mains, the voltage of which is higher than that of the operating voltage of the lamp, comprises a series connected ballast resistance, a switch for opening the parallel starting circuit and a transformer in the switch circuit the secondary of which supplies a starting voltage to the lamp when the switch operates. In the embodiments described, an incandescent lamp functions as a ballast such that the voltage drop across the ballast does not exceed 50 per cent of the operating voltage of the lamp. In the arrangement in Fig. 2, lamp 5 is connected through switch 4, from supply mains 3, in series with the electrode preheating circuit 9, of the lamp 1, comprising the heater resistance 10 of thermal switch 8, filamentary electrodes 2 and the primary 7 of an auto transformer 11, the secondary of which is connected to an auxiliary external starting electrode 12. The opening of switch 8, due to heater current through the circuit 9 produces in combination with the heating of the electrodes 2 conditions permitting the lamp 1 to " strike ". In a modified arrangement, Fig. 4, the heating circuit includes a variable resistor 14 shunted by the primary of the auto-transformer and constituting a part of the ballast. In the arrangement shown in Fig. 3, the device is " struck " by the discharge of a condenser 13 connected in series with the secondary 6 of the autotransformer across the switch 8.
Patent GB-589532-A (GB)
Title: Improvements in or relating to the protection of hooded sun blinds of the awning type
IPC: E04F10/02
Filed: 1945-03-26
Abstract: 589,532. Casings for outside sun blinds. TIDMARSH, J. H. B., and MUSGROVE, T. E. March 26, 1945, No. 7577. [Class 20 (iii)] A casing for protecting sun blinds in the collapsed position is provided with a front top board 4 and side wing covers 5, 6 mounted in or on the casing and capable of being opened to allow the blind to be extended and closed after the blind has been collapsed. The top board 4 and side wings 5, 6 are hinged to the casing and associated with mechanism for their opening and closing. As shown in Fig. 4, this mechanism may comprise a semi-circular plate 7 pivoted at 8 to the inside of the side 2 of the casing and having a toothed circular edge 9 engaged by a pinion 10 carried by a spindle 11. A cord wheel 12 (Fig. 3) keyed to the spindle 11 carries an operating cord 13 which is led over guide pulleys 14, 15 to an operating point along the length of the top 1 of the casing, where it may be led over further pulleys. The plate 7 is connected near one edge by a link 16 to the front cover board 4 and by the link 17 to the side wing 5. A stop 18 is provided on the side 2 so that the straight edge of the plate 7 bears against it when the link 16 and the plate 7 have moved past their dead centre position, thus locking the board 4 and wing 5 in the open position. At the opposite side of the casing a link pivoted to the casing carries two pivoted links one attached to the front 4 and the other attached to the side wing 6, the links being actuated when the toothed plate 7 at the other end is actuated. Other forms of mechanism are described comprising links slidably mounted on a slide bar or links pivotally connected to a nut carried on a worm. The mechanism at each end of the casing is preferably enclosed by a separate casing 27, 28.
Patent GB-226716-A (GB)
Title: Improvements in or relating to regenerators
IPC: F28F21/04
Filed: 1924-03-26
Abstract: 226,716. Razen, Schaefer, et Cie., and Razen, J. March 25, 1924. Regenerators. - In a heat regenerator channelled bricks a, Figs. 1 and 3, conveying the hot gases are surrounded on all sides by parallel flues provided in separate channelled bricks b, through which the gases to be heated circulate in the opposite direction, and the end joints between the bricks forming the two sets of flues are staggered and cemented to prevent leakage between them. The bricks b may be formed of half or quarter sections assembled together, and their ends may be so shaped that spaces 1 - - 3 are formed between them to establish interconnection through slots c provided in the ends of two or more of the contacting bricks, or the spaces 1 - - 3 may be. filled with solid or hollow filler blocks, or by a rod of suitable material lodged in refractory cement. The bricks b may be of rectangular section, or their ends may be wedgeshaped so as to fit closely together, or they may be rounded to give a certain amount of elasticity to the structure.
Patent GB-717264-A (GB)
Title: A new or improved device for guarding against unauthorised use of motorcars
IPC: B60R25/00
Filed: 1952-03-26
Abstract: 717,264. Vehicle locking devices. CHAPMAN, R. June 18, 1953 [March 26, 1952], No. 7733/52. C1ass 79(3) A metal cover C is adapted to be placed over a clutch control-pedal B, C retaining member H being engageable with or carried by the cover C, there being means for positively locking the retaining member H in an operative position in which it extends immediately beneath the footplate of the pedal. As shown, the member H is U-shaped and is secured by a U-shaped bracket L to a flanged cover plate E hinged at F to the cover C. When the pedal is in its fully-up position, the cover plate E is swung upwards and secured by means of a lock N, the limbs of the member H engaging under the pedal. The cover C may be circular in cross-section as shown, or may be oval or otherwise shaped in accordance with the pedal shape.. The lock N may be a permutation lock or may be key operated. In a modification, the retaining member takes the form of a headed rod or bar which is passed through an aligned pair of holes in the casing. The shackle of a padlock is secured in a hole at the end of the bar opposite to the headed end. More than one pair of holes in staggered relation may be provided, to allow for pedals of different height.
Patent GB-179026-A (GB)
Title: Improvements in valves and valve actuating methods for fluid pressure engines and the like
IPC: F01L21/04
Filed: 1921-03-11
Abstract: 179,026. Lockwood, P. W. March 11, 1921. Combined fluid-actuated and mechanical gears; valve spindles and valve-spindle guides; tappet gears; beat or lift valves; slide valves, piston. - In fluid-pressure engines and pumps, the distribution is effected by pairs of connected combined piston and lift admission and exhaust valves moved mechanically during the first part of their stroke and by one or more fluid-operated pistons connected to the valves during the latter part of their stroke. In the construction shown in Fig. 1, steam and exhaust valves a<3>, a<4>, b<3>, b<4> are arranged upon a common spindle S with a throwing-piston P arranged between the admission valves and working in a cylinder formed between the central and end liners K, N, M. The steam inlet and chamber are shown at a<1>, a<2> ; the exhaust chamber and passages at b<1>, b<2>. Auxiliary ports d', d<4> for exhausting the cylinder ends L, L' communicate with the piston portions of the valves and with annular recesses formed between heads s<3>, Fig. 2, on the valve spindle. Projections s<4> are provided on the reduced part of the spindle to ensure alignment of the valves. The valves are moved initially by mechanical means until the steam port k<1> and one of the exhaust ports d<1>, d<4> are opened. The differential pressure on the admission and exhaust valves and the pressure on the piston P completes the movement. The mechanical movement may be effected, in the case of a pump, by a tappet rod engaged alternately by the steam and pump pistons. A modification is described wherein four half-sets of valves and four throwing-pistons connected in pairs by bell-cranks simultaneously operated are employed. In another construction, the valves and their seats are provided with concentric male and female rings. The steam valves may be made smaller than the exhaust valves, and, to assist in balancing the weight, of different diameters. The valves may be secured to a sleeve surrounding the valve spindle by which it is operated through lost motion. In adapting the gear to a compound engine, additional ports and pistons may be provided to transfer the fluid from the high to the low-pressure cylinder, or the low-pressure cylinder may have a separate valve mechanically connected to the high-pressure cylinder valve. Specifications 10586/01, 18027/06, and 22786/08 are referred to.
Patent GB-957947-A (GB)
Title: Preparation of polyether polyols
IPC: A24B15/12
Filed: 1960-07-18
Abstract: A method of preparing a polyether polyol, which comprises reacting an aqueous solution of sucrose with propylene oxide and optionally other alkylene oxides containing 2-4 carbon atoms, at least 3 moles of propylene oxide being used per mole of sucrose with 10 to 25 moles of total alkylene oxide being used per mole of sucrose, the reaction being controlled to produce a product having a viscosity in the absence of a solvent of 2,000 to 400,000 centipoises at 25 DEG C. and an hydroxyl value from 250 to 750. Preferably the sucrose is mixed with 5-90% of water based on the total weight of sucrose and water and the alkylene oxide(s) is progressively introduced into the aqueous mixture at a pressure not exceeding 200 p.s.i. at a temperature between 70 DEG  and 270 DEG F. in the presence of an oxyalkylation catalyst.  In the examples, sucrose, sodium hydroxide and water are placed in an autoclave heated and either ethylene or propylene oxide added.  After the addition is completed, the autoclave is cooled and the pressure released. If a second alkylene oxide is to be added, the autoclave is then reheated and the alkylene oxide introduced.  On completion, the product is washed with water and neutralized by using a cation exchange resin.  It was then stripped of water by distillation, the removal of water being completed by aceotropic distillation with water.
Patent GB-580451-A (GB)
Title: Electromagnet
IPC: H01F7/13
Filed: 1944-04-27
Abstract: 580,451. Electro magnets. DERUNGS, E. A. April 27,1944, No. 7908. [A Specification was laid open to inspection under Sect. 91 of the Acts, April 27, 1944.] [Class 35] The plunger or the final core member of an electromagnet has its size reduced in steps towards the end co-operating with the member, or both members may be so reduced. In the form shown, the plunger 60 has reduced cylindrical and conical portions as shown, and the fixed core 61 is stepped to correspond. The winding is subdivided and some sub-sections may be used during a part only of the stroke, .and a single section will suffice to hold the core in the attracted position. The circuit changes may be made at contacts actuated by the rod 71 secured to core 60, or a single winding may be used with a variable series resistance. A modification with only two winding sections is described.
Patent GB-1100274-A (GB)
Title: Package-supporting mandrels
Inventor: PARKER WALTER
IPC: B65H54/54
Filed: 1964-02-26
Abstract: A mandrel for yarn package tubes in winding machines comprises a shaft which can be mounted by both its ends in the machine, and which carries at least two tube-engaging members which are biassed apart to engage the inner wall of the tube, the shaft also carrying between its ends release means acting on the members to contract them inwardly against the bias.  The members comprise a pair of nylon arms extending lengthwise of the shaft, connected at one end to a body secured to the shaft, biassed outwardly by their own resilience and also possibly by a leaf spring, and having cam grooves into which cam members carried by the release means project.  The release means can be rotated on the shaft to cam the arms inwardly.
Patent GB-496022-A (GB)
Title: Device for the hydraulic control of the blades of screw propellers
IPC: B64C11/38
Filed: 1938-03-15
Abstract: 496,022. Screw propellers. ESCHER WYSS MASCHINENFABRIKEN AKT.-GES. March 15, 1938, No. 8000. Convention date, April 1, 1937. [Class 114] In hydraulically controlled variable-pitch airscrews, a checking means is incorporated for holding the blades at a fixed pitch when the pressure of the main actuating means falls below a certain value. Each blade 2 has an eccentric pin 3 which is connected by a rod 4 with a cylinder 5 which is mounted coaxially with the propeller shaft upon a hollow tubular member 6 which has in its walls supply and return ducts 7, 8. The cylinder 5 is divided into two parts 10, 11 by a piston 9 carried by the centre tube 6. The cylinder 5 is provided with a rib 22 which co-operates with a fixed member 23 on the boss to prevent rotation and these ribs carry ratchet teeth members 12 adapted to co-operate with a tongue 21 on a sleeve 19, the tongue being moved into and out of the ratchet by means of a lever connection with a piston 14 subjected on one side to a spring pressure 16 and on the other side to hydraulic pressure obtained by fluid supplied through a pipe 25. When this supply is the same as that for the main actuating cylinder 5 it is arranged that if the pressure falls below a value determined by the spring 16 then the piston 14 moves to bring the locking tongue 21 into engagement with the ratchet teeth 12. In addition, if it is desired definitely to lock the gear, liquid at high pressure is supplied under the control of a valve connected with this pipe 25. In an alternative form, instead of the three control members acting upon a single ring 19, they may each separately act upon tongue members which coact in that case with three such sets of ratchet teeth as 12.
Patent GB-585402-A (GB)
Title: Improvements in or relating to hydraulic shock absorbers
IPC: F16F9/48
Filed: 1944-04-28
Abstract: 585,402. Hydraulic shock-absorbers. MONROE AUTO EQUIPMENT CO. April 28, 1944, No. 8039. Convention date, March 22, 1943.. [Class 108 (iii)] A hydraulic shock-absorber of the piston-andcylinder type comprises two sets of passages in the piston through which liquid flows on movement of the piston in one direction in the cylinder, means normally closing one (the first) set of passages and adapted to offer low resistance to flow of liquid therethrough, means operable on further movement of the piston in the same direction to cut off the flow of liquid through the first set of passages, and means normally closing the second set of passages and operable, when the flow through the first set of passages is cut off, to offer a secondary high resistance to flow of liquid through the second set of passages. As shown, the shock-absorber comprises a pressure cylinder A, reserve chamber B and piston C, cylinder A having a valve assembly 12 at its lower end and, at its upper end, a closure 10 with a seal 13, a pocket 14 for receiving liquid scraped off the piston-rod 11 by the seal and passages 15 for conducting liquid to the reserve chamber B. A dust shield 36 is suspended from a cap 37 on the piston-rod 11. The body 43 of the piston C has three sets of openended passages 44, 45, 46, flow of liquid through which is controlled respectively by valves 54, 50, 60. Disc valve 54 'has openings 55, 56 registering with the open upper ends of passages 45, 46 and an imperforate marginal portion 57 normally held in closed position over the upper ends of passages 44 by a star-shaped spring 58; leaf spring valve 50 is normally held in closed position against the lower ends of passages 45 by a coiled spring 52; and leaf spring valve 60 normally closes the upper ends of passages 46. The valves are'held in position on the piston body 43 between an apertured backing plate'61, on the reduced end 40 of the piston-rod, and the coiled spring 52 by a nut 42.' Below the piston, an annulus 70 of inverted L cross-section is held at a distance from the lower ends of the passages 44 by a coiled spring 71 carried by the body 16 of the base valve assembly 12. Operation. During slow compression of the shock-absorber, liquid below the piston C initially flows upwardly through the passages 44 past the disc valve 54, but should the compression increase until the piston abuts the annulus 70, the latter closes the passages 44 and liquid flows upwardly through the passages 46 against the resistance of valve 60. At the same time, liquid is forced to the reserve chamber B through holes 18 in the body 16 of the base valve assembly 12 against the action of a leaf spring valve 19. On rebound, liquid flows downwardly through the piston passages 45 against the resistance of valve 50 and simultaneously flows from the reserve chamber B into the cylinder A through passes 17 in the base valve assembly against the resistance of a disc valve 20.
Patent GB-126785-A (GB)
Title: Improvements in Carding Engines and like Machines used in the Treatment of Fibrous Substances.
Inventor: BRAY DAVID
IPC: D01G23/00
Filed: 1918-05-14
Abstract: 126,785. Bray, D. May 14, 1918. Carding-engines; feeding openers and carding- engines.-An oscillating roller or semi -cylindric al roller d is mounted above and co-operates with the feeding rollers a, b of a carding-engine or like machine. The roller d is operated by a quadrant and crank or other mechanism and serves to detach matted fibres from the roller b and to feed them to the cylinder A, and by its receding motion to clear the roller b. The cylinder A may be the first cylinder or first licker-in of a carding-engine, or the main drum of a like machine.
Patent GB-665110-A (GB)
Title: Improvements in and relating to condensation products of furfural and monohydroxybenzenes
IPC: C08G14/10
Filed: 1948-03-18
Abstract: Synthetic resins are prepared by reacting (1) a mixture consisting essentially of a major proportion of ortho-cresol, meta-cresol, and paracresol, and a minor proportion of a mixture of xylenols, (2) furfural, and (3) from 0.5 to 15 per cent by weight of melamine or a methylol melamine based on the weight of (1).  Reaction is preferably effected at 125-225 DEG  C. at pH 6-7 and using 1-3 or more mols. of furfural for each mol. of the phenols.  The cresol mixture exemplified is "Barrett No. 8 Cresol" which comprises 3 per cent phenol, 73 per cent of a mixture of ortho-, meta- and para-cresol and 24 per cent of a fraction boiling between 195-212 DEG  C. and containing small amounts of meta- and para-cresols and larger amounts of xylenols, e.g. 1,2,4-xylenol and 1,3,5-xylenol.  In examples: (1) Barrett No. 8 Cresol, furfural and melamine are reacted; (3) Barrett No. 8 Cresol, furfural and dimethylol melamine are reacted; (6) Barrett No. 8 Cresol, furfural and melamine are reacted in presence of triethanolamine.  The resins may be used in coating compositions or moulding compounds, e.g. with fillers or pigments and may be combined with polyvinyl formal resins, e.g. polyvinyl acetal to yield compositions for insulating electrical conductors as disclosed in Specification 531,273.  The Specification as open to inspection under Sect. 91 states that ingredient (1) may be phenol or an aldehyde-reactable alkyl-substituted phenol, e.g. any of the cresols or mixtures thereof, by themselves or with phenol and any of the xylenols, e.g. 1,2,3-, 1,2,4- or 1,3,5-xylenol or mixtures of xylenols by themselves or with other mono-hydroxy benzenes.  This subject-matter does not appear in the Specification as accepted.
Patent GB-836776-A (GB)
Title: Improvements in surgical operating tables
Inventor: GREVILLE ERNEST RICHARD GORDON
IPC: A61G13/10
Filed: 1955-03-21
Abstract: 836,776. X-ray apparatus. MEDICAL SUPPLY ASSOCIATION Ltd. June 15, 1956 [March 21, 1955], No. 8146/55. Class 98(1) [Also in Group XIV] The centre section 18 of an operating table consists of an open rectangular frame supporting a removable cover plate 18 of material transparent to X-rays. Below the cover plate is a slidable carriage (Figs. 2, 3) for holding an X-ray film cassette, the carriage consisting of a rectangular frame with a removable shallow tray 20 carrying four spring- pressed bolts 22 engaging holes in the frame 19. The bolts have downturned inner ends serving as handles to withdraw the bolts from the frame so that either side of the tray can be lowered as shown in Fig. 3, the downward movement being limited by a central stirrup 24. The carriage is locked, as a whole, by hand levers 25 which rot-- ate a shaft carrying cams engaging guide rails depending from the centre section.
Patent GB-539567-A (GB)
Title: New or improved means for securing roofing tiles and the like
IPC: E04D1/34
Filed: 1940-05-07
Abstract: 539,567. Roofs. HINE, H. A., and SCHAFER, W. May 7, 1940, No. 8177. [Class 20 (iv)] Roofing tiles are secured to the battens j by means of U-shaped clips a of the form shown in Figs. 2, 3, which are made of steel strip 'with longitudinal stiffening ribs b. The shorter limb is cranked at e so that it snaps over the batten, while the longer limb has an end depression g to engage the tile. One or more nail-holes h may be provided to allow the clip to be nailed to the batten if required. In general it is sufficient to fit clips to the tiles in every third row as shown in Fig. 1.
Patent GB-416514-A (GB)
Title: Improvements in and relating to turbines
IPC: F01D15/02
Filed: 1933-03-17
Abstract: 416,514. Steam turbines. PARSONS MARINE STEAM TURBINE CO., Ltd., WILKINSON, J. W., and BENNETT, A. P., Turbinia Works, Wallsend-on-Tyne. March 17, 1933, No. 8203. [Class 110 (iii).] In a geared turbine unit, particularly for ship propulsion, comprising two turbines A, B, driving a power shaft 10<a> through double-reduction gearing 7-10, the primary pinion 7 positioned between the turbines is of the single-helical type and is in rigid rotational relation with the turbine shafts. The shaft is shown as built up of sections 2, 3, 4 joined by bolted couplings 5, 6, but claw couplings of the type described in Specification 125,661, [Class 12 (ii)], may be used. The end-thrusts in the turbines oppose that of the propeller, and thrust-blocks 11, 12, 13 are arranged on the turbine-shaft, the intermediate gear-shaft, and the propeller-shaft respectively. The turbines may operate in series or in parallel; one or other may be cut out ; and astern sections may be provided. Thrust-blocks may be arranged at the ends of the turbine shaft. The turbine casings, gear housing D, and condenser C are combined structurally on a common bed-plate.