baber/WOPTO huggingface dataset:
Patent GB-351475-A (GB)
Title: Improvements in vehicle draw-bars
IPC: B60D1/40
Filed: 1930-02-25
Abstract: 351,475. Road vehicle draught gear. DORAN, L. R., 66, Galveston Road, Putney, London. Feb. 25, 1930, No. 6146. [Class 79 (iii).] A tractor and trailer may be coupled to one another by a telescopic draw-bar combined with an automatic coupling-device. The tractor is backed towards the trailer and the draw-bar, which is attached to the trailer by the eye-bolts A, is lifted. The locking pin B is then withdrawn by the chain E against the pull of the spring H and the inner telescopic bar C is drawn out and attached to the tractor. As soon as the bar C is withdrawn the block G is pushed out by the spring F and prevents pin B from returning under the action of spring H. The tractor is then driven backwards until the bar C pushes the block G backwards against the spring F when the pin B is shot through a hole in the end of the bar C and couples the parts together.
Patent GB-117098-A (GB)
Title: Improvements in or connected with the Construction of Ships or Vessels and other Floating Structures of Reinforced Concrete.
Inventor: FOUGNER NICOLAY KNUDTZON
IPC: B63B5/16
Filed: 1917-05-01
Abstract: 117,098. Fougner, N. K. May 1, 1917. Concrete vessels.-In constructing reinforcedconcrete floating craft, such as lighters, barges, ships, motor-boats, sailing-vessels, floating-docks, colliers, pontoons, landing-stages, and the like, all formwork or centering is elminated by the use of metal lath, or sheets of perforated or expanded metal or meshwork G, which is attached to both sides of the main reinforcement A, E and plastered with cement so as to produce a hollow mould or form to receive later the main mass or filling of concrete. The detail members, such as frames, beams, stanchions, and bulkheads, as well as the hull are formed in this way, and' the plastered meshwork becomes a permanent part of the structure. The meshwork provides surface reinforcement which prevents cracks. The coating for the metal meshwork consists of a rich mixture of high water-resisting quality about half an inch thick. The meshwork is laid in horizontal strips or bands G, as shown in Fig. 1, leaving open intervals through which, in succession, the concrete is poured until that part of the form below the interval is nearly filled up. These intervals are subsequently covered in, in succession, with the meshwork. Alternatively, the meshwork is left unplastered and a thick concrete filling is used, the surface plastering of the meshwork being completed after the inside concrete has hardened.
Patent GB-858312-A (GB)
Title: Improvements in or relating to current controlling circuits
Inventor: BALDWIN JOHN LEWIS EDWIN
IPC: H04N3/26
Filed: 1957-02-25
Abstract: 858,312. Cathode-ray tube circuits. RANK CINTEL Ltd. Feb. 24, 1958 [Feb. 25, 1957], No. 6223/57. Class 40(7). In an arrangement for maintaining the beams of a television tube accurately in focus for all deflected positions the current flowing in the focusing coil 1 is controlled in accordance with a parabolic voltage derived from the tube deflection circuit and utilized to control the conduction of a valve 2 in the focusing current path of coil 1. The parabolic voltage which is effective at the control grid of valve 12, is derived from the sawtooth deflection voltage for the tube supplied to terminal "IN" by combining the first integral thereof, produced by means of resistor 16 and condenser 17, with the second integral produced by means of resistor 21 and condenser 20. Valve 12 drives a second valve 4 via the common cathode resistor 13 and the output of valve 4 is fed to the grid of valve 12 via the potential divider 9, 10 the valves of which are such that the reduction in the voltage fed back is equal to the gain of the two valves. Under this condition approximately infinite gain exists between the control grid and anode of valve 4 but oscillation is prevented by negative feed-back to the control grid of valve 4 via valve 2. A mathematical analysis of the operation of the circuit is given and it is shown that, when the gain of valves 12 and 4 is large the variation in the input (parabolic) waveform is accurately followed by the current in the load I and independent of changes in the resistance of the load due, e.g. to thermal changes and substantially independent of variations in both H.T. supply voltages although the latter, preferably, are stabilized. Fig. 5, shows a modification of the circuit in which the bias source 11 is omitted when H.T.2 is sufficiently stable and the resistor 9 connected to a suitable tapping on anode resistor 5. Other modifications shown include the provision of a potentiometer 22 to enable the current flowing in load 1 to be varied by varying the negative feed-back of valve 4; the provision of a resistor 23 shunting valve 2 so that the current handling requirement of the latter need be sufficient only for the variation of current produced in the load coil; the provision of a resistor 24 in series with the grid of valve 12 and condenser 17 to reduce distortions due to eddy currents generated conductive but non- magnetic material associated with the structure of the coil1. The invention is stated to be of general application and the thermionic valves may be replaced by transistors.
Patent GB-648411-A (GB)
Title: Improvements in and relating to heald frames for looms for weaving
Inventor: HAENNY RUDOLPH CHRISTIAN REYNO
IPC: D03C9/06
Filed: 1948-02-28
Abstract: 648,411. Heald frames for looms. MEYER, P. Feb. 28, 1948, No. 6319. [Class 142(i)] A cross rail 1, Figs. 2, 10, for a heald shaft frame for a loom is made of a substantially channel-shaped section, and has slide guide slots 3, 4 along the upper and lower edges whereby suspending hooks and heald carriers may be locked at suitable points. A suspending hook unit 5 slides along an upper slot 3 and a heald shaft carrier 6 slides along the lower slot 4. The hook unit 5 consists of a sliding shoe 9 housed in the slot 3 with a tail member 11 to which a hook 12 having a camshaped surface 12<1> is pivoted and a clamping jaw 10 arranged so that when the hook is upright, the cam surface exerts pressure on the jaw and rim section a, b are clamped between the jaw 10 and the shoe. 9. The heald shaft carrier consists of a sliding block 14 the ends of which bear on the inside of the slot 4 and the centre part of which carries a rod 15 curved to form a housing for a heald shaft, and a catch member 16 pivoted to the rod 15 and integral with a block-piece 18. Fig. 12 (not shown). The centre part of the sliding block 14 is slightly flexible, and when the latch is in a vertical position, the rim-sections a<1>, b<1> are clamped between the end pieces of the block 14 and the latch and block piece. In a modified form, Fig. 21, the heald shaft may oscillate in a vertical plane. A sliding block 14<1> carries a flexible wire 29 to which is secured a sliding blade 34 carrying a heald shaft 7. A latch 32 and block-piece 31 pivoted to a rod 30 attached to a sliding block 14<1> secure the carrier to the rail as before. Checks 35 on the rod 30 prevent movement of the sliding blade parallel to the rail. The same construction may be employed for both upper and lower shaft rails and several cross-sectional shapes of rail are described, Figs. 3-9 (not shown). The rails may have apertures drilled in them to reduce weight or they may be reinforced with wood or metal pieces. Flat plates are used to secure the frame uprights with attached slides to the rails.
Patent GB-1157742-A (GB)
Title: Ionisable Polymers
Inventor: JAFFE GERALD MYER
IPC: C08F8/34
Filed: 1966-09-21
Abstract: 1,157,742. Formamidine/polymer ions. F. HOFFMANN - LA ROCHE & CO. A.G. 21 Sept., 1966 [24 Sept., 1965], No. 6443/68. Divided out of 1,157,741. Heading C3P. An ionizable polymer comprises a formamidine cation and a polymeric anion derived from a sulphonic acid type cation-exchange resin. In the example formamidine hydrochloride was treated with a sulphonated cross-linked styrene/ divinylbenzene copolymer as follows:- where R is the resin anion.
Patent GB-580202-A (GB)
Title: Improvements in fluid pressure regulating devices
IPC: G05D16/06
Filed: 1944-04-06
Abstract: 580,202. Pressure regulating valves. BRYAN DONKIN CO., Ltd., and STONE, B. I. April 6, 1944, No. 6455. [Class 135] A fluid-pressure governor suitable for controlling the flow of gas in a pipe or for controlling a gaspumping plant, has a stabilising device in the form of a spring d or the equivalent interposed between a diaphragm, piston or liquid-sealed bell such as c exposed on opposite sides to the differential pressure created by a venturi tube or the like x and the control or actuating diaphragm a of the governor, a damping device such as the dashpot g, h being associated with the stabilising device. As shown, the throat of the venturi tube x is connected by a pipe m to the underside of the diaphragm c which has a stem f bearing the dashpot piston g. A fixed restriction l is arranged in the pipe m and an adjustable control device in the form of a needle valve is arranged in a pipe k joining the two connections to the venturi tube so that a part only of the full differential pressure may operate on the diaphragm c. In the case of a relay-controlled governor; the stabilising device operates on the pilot governor and the venturi tube is arranged in the main gas flow.
Patent GB-573906-A (GB)
Title: Process for the production of organo substituted silicon compounds
IPC: C07F7/18
Filed: 1943-04-22
Abstract: Organo-substituted silicon compounds are prepared by reacting an alkyl orthosilicate with an alkyl, cyclo-alkyl, aryl or aralkyl halogenide in the presence of an alkali metal.  The reaction is preferably carried out in an inert organic solvent, with the alkali metal either in a finely-divided state or in the form of an amalgam. The proportions of the reactants may be varied with the resultant formation of compounds in which one, two or three of the alkoxy radicals are replaced by alkyl &c. radicals.  If the reaction is carried out in the presence of excess orthosilicate which is one of the preferred forms of the invention, the main product is a compound of the structure R1Si(OR)3.  In examples: (1) methyl orthosilicate is reacted with iso-amyl bromide in toluene solution in the presence of sodium to give a mixture of mono-iso-amyl trimethoxy silicane and di-iso-amyl-dimethoxy silicane; (2) methyl orthosilicate is reacted with chlorobenzene in liquid paraffin solution in the presence of sodium to form phenyl trimethoxy silicane; (3) as in example (2) using toluene as the solvent; (4) as in example (2) using cyclohexyl bromide instead of chlorobenzene; (5) as in example (1) using benzyl chloride as the halide; (6) ethyl orthosilicate is reacted with ethyl bromide in dekalin solution in the presence of sodium to give a mixture of monoethyl triethoxy silicane, diethyl diethoxy silicane, and triethyl ethoxy silicane; (7) methyl orthosilicate is reacted with N-hexyl bromide in toluene solution in the presence of sodium amalgam to give N-hexyl trimethoxy silicane.  If desired, the alkylation may be carried out in two or more stages and in this case different hydrocarbon radicals may be introduced in each stage.
Patent GB-292649-A (GB)
Title: Improvements to electric burglar alarms
IPC: G08B13/00
Filed: 1927-03-09
Abstract: 292,649. Tibbles, H. J., and Rely-a- Bell Burglar & Fire Alarm Co., Ltd. March 9, 1927. Burglar alarms have the bell &c. protected by an inner and an outer cover, the latter of which is included in the protective circuit of the system so that its removal sets the alarm into operation. In the construction shown the outer cover 4 carries a block of wood 8 having copper strips secured on it at 9 and engaging contact strips 10 of the construction described in Specification 288,743. The top of the cover 4 is arranged obliquely to prevent rain water lodging on it.
Patent GB-178054-A (GB)
Title: Improvements in pruning shears
IPC: A01G3/025
Filed: 1921-04-22
Abstract: 178,054. Inkpen, R. S. April 22, 1921. Hand shears. - Pruning-shears in which a pair of blades 10, 11, pivotally connected together at 12 are supported on a stem 14 so as to be operated by a rod, cord, wire, &c. extending beside the stem, have the blade 10 pivoted at 15 to the stem and the blade 11 carried by a link 16 pivoted to the steam at 17. In one arrangement the blade 11 is connected to the link 16 by an integral arm 19 and the link is formed with an extension 20 serving as an operating-lever and to which a chain &c. 21 is attached so that the shears can be operated from a distance; a spring 22 normally holds the blades in the open position. In modifications, the operating-lever pivoted to the stem carries a rod pivoted thereto and to the pivot connecting the blades or to either of the blades directly or to one of the blades and a link pivoted thereto and to the stem.
Patent GB-983430-A (GB)
Title: Improvements in gypsum based plasters
IPC: C04B24/14
Filed: 1962-02-21
Abstract: A plaster composition comprises hemihydrate gypsum plaster and vital gluten in dry powdered form, vital gluten being the protein constituent of wheat or rye, substantially free from starch, prepared in a dry form in such a manner that when mixed with water it will form a rubbery mass.  The plaster preferably contains 0.1 to 0.5% weight of vital gluten.  A retarder, for example keratin, may be incorporated.  Gauging materials, for example an aggregate of sand, expanded perlite or vermiculite, and water may be added to make a workable putty.
Patent GB-626995-A (GB)
Title: Snap-action electric switch
IPC: H01H5/18
Filed: 1947-03-11
Abstract: 626,995. Snap-action switches; pressbutton retractive switches; switches held set and freed mechanically. SMITH, E. S. March 11, 1947, No. 6779. [Class 38(v)] A snap-action switch comprises a pair of resilient contact blades 1, 10 the blade 10 being slotted to form a trifurcated snap-action spring having its middle compression leg 11 pivoted on an extension 14a of the terminal bar 14. A backstop 7 with an adjusting screw 8 for the snap-action blade is mounted on an insulating bar 5 fixed to the other blade 1, whereby movement of the latter in either direction also moves the blade 10 to a point where it snaps over dead-centre to open or close the contacts. The switch may be constructed as a normally open or normally closed switch, or one which remains in either position by adjusting the initial set of the blade 1. The switch may be operated through a cam follower 6; alternatively (Fig. 7 not shown) the switch frame may carry push-buttons to engage the insulating strip to open and close the switch.
Patent GB-167725-A (GB)
Title: An improved method of and apparatus for recovering sulphur dioxide from furnace gases or other gases containing the same
IPC: C01B17/56
Filed: 1920-05-04
Abstract: 167,725. Eustis, A. H. May 4, 1920. Drying gases.-Moist sulphur dioxide gas is dried by passage through pumps, which are maintained at a temperature high enough to prevent condensation, and coolers made of non-corrodible material, the last traces of water being removed by injection of liquid sulphur dioxide spray and condensation. As shown, the gas extracted in a chamber 16 passes by a pipe through refrigerators or surface coolers 21, wherein it is cooled by brine, to a vacuum pump 24a provided with a steam jacket 27<a>. The gas from this pump is cooled in a cooler 26<a> made of lead &c., from which condensed moisture is drawn off into a valved trap or receptacle 26<d>, and passes through like pumps 24b, 24<c> and intercoolers 27<b>, 27<c> to a cooling chamber 30 wherein most of the remaining moisture is cooled out and withdrawn through a pipe 30<a>. The cooled dry gas is withdrawn from this chamber, compressed in a compressor 32, passed to a condenser 33, and stored in liquid form in a receiver 34. Between the compressor and condenser a trap 35 is interposed containing liquid sulphur dioxide which extracts the last traces of moisture. The trap contains broken coke &c., and is cooled by a coil 35<b>. The liquid sulphur dioxide collecting in the trap may be blown back through a valve-controlled pipe 36 into the chamber 30 wherein it expands, producing a refrigerating effect. Specification 168,627, [Class 1 (ii), Inorganic compounds, other than &c.], is referred to.
Patent GB-607846-A (GB)
Title: Improvements in or relating to electrical condensers
IPC: H01G4/008
Filed: 1946-03-05
Abstract: 607,846. Condensers. STANDARD TELEPHONES & CABLES, Ltd., BARNARD, R. M., FEARON, J. H., and BODYCOMBE, E. L. March 5, 1946, No. 6784. [Class 37] A method of manufacturing electric condensers comprising dielectric plates 1 coated with a silver paste 2 on both sides 3, 5, comprises the steps : (a) coating an area indicated by the hatched portion of Fig. 3 on both sides of the dielectric plate, including the respective edges of the plate, with finelydivided silver in a low melting-point base, which contains lead borate evenly distributed to act as a flux; (b) stacking and clamping one or more of the dielectric plates between two insulating cover plates which have been coated at each end edge with silver paste; (c) firing the assembled starch between 580 C. and 660‹ C. until the solvent has been driven off; (d) soft soldering the end edges of the stack with a silver bearing solder. Specifications 569,388, [Group II], and 607,853 are referred to.
Patent GB-1261967-A (GB)
Title: Improvements in or relating to photography
Inventor: CERWONKA EDWARD
IPC: G03F7/32
Filed: 1969-02-07
Abstract: 1,261,967. Photopolymerizable materials. GAF CORP. 7 Feb., 1969 [12 Feb., 1968], No. 6790/69. Heading C3P. [Also in Division G2] A photopolymerizable composition comprises an ethylenically unsaturated compound, a ferric salt, an alpha-hydroxycarboxylic acid which is either a colour coupler or a dye and optionally, a peroxy compound. The composition may also contain a polymer. The peroxy compound may be a peroxide or a per salt or per acid. Specified carboxylic acids are metahydroxy mandelic acid and the alpha-hydroxy carboxylic acid of malachite Green. In the examples, the composition is coated on a support, image-wise exposed, treated with peroxide and washed with water to remove unexposed areas which leaves a coloured resist if a dye is used. If a coupler is used, the resist is treated with an alkaline colour developer and then with an oxidizing agent such as potassium ferricyanide or bichromate to produce a coloured resist. Specified monomers are acrylamides, acrylic and methacrylic acids, esters and salts, vinyl esters and ethers, butadiene, vinyl pyrrolidine and acrylonitrile. A cross-linking agent such as a bisacrylamide, triallyl cyanurate, divinyl benzene, divinyl ketones or diglycol diacrylate may be present.
Patent GB-752585-A (GB)
Title: Improvements in or relating to servo-operated hydraulic pressure systems
IPC: B60T13/14
Filed: 1954-03-09
Abstract: 752,585. Hydraulic brakes. ELECTRIC AUTO-LITE CO. March 9, 1954 [March 11, 1953], No. 6815/54. Class 103 (1). [Also in Group XXIX] A servo unit for operating the master cylinder 13 of an hydraulic braking system comprises a power cylinder having a piston 50 or like displaceable member therein with opposed sides, valve means 69 being associated with a manually operable member 61 and movable thereby toward and ultimately into engagement with one of said sides of the piston, and is characterized in that the pressurized fluid in said power unit becomes operative on one side of the displaceable member only when said valve means is moved into engagement with said one side to move the latter to an operative position. Such engagement lifts the back end 68 of the valve member 69 off its seat and allows fluid pressure from passage 73 to become operative in space 52.
Patent GB-228381-A (GB)
Title: Improvements in or relating to refrigerators, cold rooms or the like cooling means
IPC: F25D3/04
Filed: 1924-03-17
Abstract: 228,381. Fulford, R. A., and Leach, A. E. March 17, 1924. Cold storage rooms; refrigerators, domestic and like.-The rear edge of the ice-supporting shelf 2 is provided with an upwardly extending partition 9 spaced from the rear wall of the refrigerator 1 and provided with apertures 11 at the top to permit the circulation of the air. The lower edge of the front lining 13 of the ice-chamber is bent outwardly to form a lip 12 extending slightly over the front edge of the shelf. The ice is supported on a rack carried by the shelf, comprising a sheet 15 of metal folded at intervals to form spaced V-shaped grooves and reinforced by metal tie rods 17 passing through perforations in the grooves.
Patent GB-1148641-A (GB)
Title: Improvements in or relating to electrical switches and devices employing electrical switches
IPC: G06F9/00
Filed: 1966-02-16
Abstract: 1,148,641. Switch contacts; stencil switches. SEALECTRO Ltd., and T. C. TAYLOR. 10 Feb., 1967 [16 Feb., 1966], No. 6862/66. Heading H1N. A switch comprises a flexible blade 16 fixed at one end 20 and having a contact 29 intermediate its ends co-operating with a fixed contact 28, a stop 21 engaging one side of the blade at a point between the movable contact and its free end 19, movement of the free end in the direction of the arrow A flexing the blade about the stop so as to open the contacts. A plurality of such switches may be assembled into vertical and horizontal rows, the ends 19 all projecting at one end for co-operation with a punched card 13. A handle 32 when moved clockwise raises a card support 14 and an assembly of tie-bars 30 so that all the switches are actuated and the ends 19 are removed from the surface of the support 14. The card 13 is then inserted and when the handle is released, the ends 19 are released by the bars 30. Those ends which are opposite holes in the card restore completely, whilst the remainder stay in their actuated condition. The switch may alternatively be normally open and handle 32 may be solenoid-operated.
Patent GB-565775-A (GB)
Title: Improvements in fermentation of paper pulp waste liquors
IPC: C12P7/52
Filed: 1942-05-20
Abstract: Fatty acids and derivatives thereof are obtained by fermenting waste liquors resulting from paper pulp manufacture at 40-50 DEG  C. and at a pH of 5.5-7.5, by means of a culture which is obtained by growing together (a) mixed bacteria obtained from soil or the intestinal canal of herbivorous animals or both, without any separation or selective cultivation, and (b) a pure culture chosen according to the product derived from cultures of lactic, butyric, pseudo-lactic, cellulosolytic or pectinolytic bacteria.  Liquors from the soda process are treated with acid and liquors from the sulphite process are treated with alkali to give the required pH before fermentation. The resulting fatty acid, e.g. butyric acid may be converted to ketone.  Specification 565,772 is referred to.