baber/WOPTO huggingface dataset:
Patent GB-255934-A (GB)
Title: Improvements in cam operating mechanism for the controlling gear of steam steering and other engines
IPC: B63H25/32
Filed: 1925-04-28
Abstract: 255,934. Lyall, J. April 28, 1925. Addition to 216,410. Economizer valves and valve-gear.-The valve. gear described in the parent Specification is adapted for actuating two or more valves 4, 4<a>, one or more of which are to be opened whilst the others remain closed and vice versa. The gear comprises an opening-cam lever 6, 6<a> connected to each valve, closing-cam levers 18, 18<a> each having a concave face a co-operating with a convex face b on the opening-cam lever, a cam face 9, 9<a> on each opening-cam lever, cam faces 17, 17<a> on the corresponding closing-cam levers, and a rocker 12 carrying rollers 10, 10<a>, 16, 16<a> for co-operating with these cams. The levers and the rocker 12 are pivoted on a bracket 8 and the rocker is actuated by a rod 14. In the position shown, the valve 4<a> is held closed by the engagement of the roller 16<a> with the cam face 17<a> of the lever 18<a>, the face a of which bears on the face b of the lever 6<a>. The valve 4 is held open by the roller 10 engaging the cam face 9 of the cam lever 6. In the central position of the rocker 12, both rollers 16, 16<a> bear on the cam faces 17, 17<a> and both valves are closed. The rods 11 carrying the rollers 10, 10<a> have flats 20 to provide clearance for the cams 9, 9<a> in the closed position of the valves.
Patent GB-579623-A (GB)
Title: Improvements in or relating to air compressors
IPC: F04B39/00
Filed: 1944-06-08
Abstract: 579,623. Air compressors. HEYWOOD COMPRESSOR CO., Ltd., HUNT, J. A., and MOREILLON, A. E. June 8, 1944, No. 11013. [Class 8 (i)] In a two stage high speed air compressor comprising a differential piston b, c Fig 1 reciprocating in co-axial cylinders, the larger diameter cylinder head is provided with a downwardly projecting automatic inlet valve consisting of a thin annular plate g spring-pressed against co-axial seating rings m, n. The piston head b is recessed to accommodate the downwardly projecting inlet valve mechanism and to house a spring-loaded disc transfer valve q the peripheral edges of which are cut away to allow partly compressed air access to the second stage and to an automatic delivery valve u. A relay in the form of a spring- loaded piston when subject to pressure may hold the inlet valve off its seating so that the compressor becomes "off-loaded."
Patent GB-401707-A (GB)
Title: Insecticides
IPC: A01N43/40
Filed: 1932-04-18
Abstract: Quaternary compounds of nicotine and the like are prepared by interaction of the bases contained in tobacco or salts thereof with the inorganic acid esters of long-chain aliphatic alcohols containing more than six carbon atoms.  The soap-like properties of the products render them useful as insecticides, for which purpose they may be mixed with a wet or dry diluent, such as talc, kieselguhr, water, nicotine itself, solutions of nicotine in oils, tar and petroleum oils.  When two molecular proportions of alkyl ester are reacted with the nicotine base, a diquaternary compound results; using a nicotine salt and one or more molecular proportions of alkyl ester, a salt of a monoquaternary compound is obtained.  The salt may, if desired, be partially hydrolysed by treatment with alkali.  Examples are given of the interaction of nicotine with dodecyl and octadecyl bromides and of nicotine hydrobromide and hydrochloride with dodecyl bromide. Specifications 350,080, 379,396, and 392,763 are referred to.ALSO:Insecticidal compositions are prepared by incorporating quaternary compounds of nicotine and like bases contained in tobacco with a wet or dry diluent, such as talc, kieselguhr, water, nicotine itself, solutions of nicotine in oils, tar and petroleum oils.  The quaternary compounds are made by interaction of the nicotine base with inorganic acid esters of long-chain aliphatic alcohols containing more than six carbon atoms, e.g. dodecyl or octaldecyl bromide.
Patent GB-1595710-A (GB)
Title: Thioxanthones
IPC: C07D335/16
Filed: 1978-03-21
Abstract: There is described the preparation of optionally substituted thioxanthones; the process involves reacting appropriate o,o'-dihalobenzophenone with sulphur hydride (hydrogen sulphide) or a sulphide or hydrosulphide. The compounds are useful as photoinitiators.
Patent GB-776834-A (GB)
Title: An improved method of, and blocks for use in constructing walls
IPC: E04B2/02
Filed: 1954-04-15
Abstract: 776,834. Building blocks; walls &c. BRUCE, R. Oct. 26, 1954 [April 15, 1954], No. 11186/54. Classes 20(4) and 87(1) In a building block formed with vertical apertures a, the outer walls b, c are reduced in thickness at their upper and lower ends to form bearing surfaces d surrounding frogs which communicate with the apertures a. Ribs and channels g are provided on the ends of the block and the edges of the block are formed with undercut pointing grooves h. The blocks of lightweight concrete are laid in vertical alignment and not in bond when forming a wall and are then filled with concrete.
Patent GB-786054-A (GB)
Title: Improvements in or relating to light responsive apparatus
Inventor: MITCHELL ALEXANDER HARRY
IPC: G08B17/12
Filed: 1953-04-23
Abstract: 786,054. Light - responsive circuits. NATIONAL RESEARCH DEVELOPMENT CORPORATION. April 8, 1954 [April 23, 1953], No. 11202/53. Class 40 (3). A light-responsive circuit comprises a cold cathode discharge tube controlled by the light incident on a group of photo-electric barrier cell-type elements or layers in series in which a standing bias just less than the minimum required to strike the tube is applied from a D.C. source to electrodes of the tube, the series elements being connected so as to increase the voltage applied to these electrodes in response to light to above the striking voltages. The trigger electrode of a three electrode cold cathode discharge tube is connected through series connected photo-cells to a bias tapped off the anode supply so that when the light intensity exceeds a preset level the sum of the bias and photo-cell voltages applied to the trigger electrode is sufficient to ignite the tube. A rectifier may be connected in shunt with the photo-cells so as to present a high resistance to the cell voltage while presenting a virtual short circuit to trigger current which would otherwise be restricted by the cell resistance. In an arrangement using a two electrode discharge tube the rectifier shunted cells are in series with the load across the supply voltage so that the tube strikes in response to a large enough rise in cell voltage. In a further arrangement, Fig. 4, the trigger electrode 13 is connected to the junction of a series of photocells 18 with a resistor 21 (preferably a similar photo-cell shielded from light), which form a potentiometer connected across the anode voltage supply 15, so that when the cell resistance falls sufficiently in response to increased light intensity, the trigger voltage ignites the tube. Use of a photo-cell for resistor 21 ensures that the trigger voltage is independent of temperature. The anode load of the discharge tube may comprise fusible igniters for use in blasting, or means to suppress incipient fuel tank explosions in aircraft by the light therefrom.
Patent GB-527523-A (GB)
Title: Improvements in automatic temperature and humidity control in indirect space heating systems
IPC: F24F3/14
Filed: 1939-04-13
Abstract: 527,523. Humidity control. ARMSTRONG HEAT CONTROL CO., and ARMSTRONG, C. E. April 13, 1939, No. 11271. [Class 137] [Also in Group XXXV] In a temperature-controlled system for heating air in a ventilating duct 5 humidity is controlled in accordance with heat supply. Valves 12 controlling heating fluid are opened in succession by a cam-shaft with a further cam operating a lever coupled to the piston of a valve between pipes 60 and 68 ... 71 so that the latter pipes, which admit moisture to the duct in the vicinity of a fan 7, are opened in turn as the heat supply increases.
Patent GB-1524810-A (GB)
Title: Light meter for use in photography
IPC: G01J1/44
Filed: 1975-08-08
Abstract: 1524810 Exposure meters M ELPHICK 8 Aug 1975 [13 May 1974 28 Oct 1974] 11283/74 and 46596/74 Heading G2X An exposure meter calculates and digitally displays diaphragm aperture. In Fig. 1, a photo-electric converter 21 produces a digital signal proportional to object brightness and a calculating device 23 receives this signal and digital signals corresponding to film speed and shutter speed set in by thumbwheels 25 and calculates an aperture value which is displayed at 29. The display may be held by operating a switch 32. In Fig. 2, a photo-electric converter 41 produces an analogue signal proportional to object brightness L and an analogue processor 43 receives this signal and analogue signals corresponding to film speed S and shutter speed T set in by thumbwheels 46, 51. Processor 43 includes an operational amplifier 55 with a feedback loop 56 to take the square root of the input so that the output at 57 is proportional to #LST i.e. to the f number. Output 57 is fed to a digital display 59 via an A-D converter 58. Similar arrangements are depicted in Fig. 3 (not shown) in which analogue signals corresponding to LS and T are multiplied and converted to a digital form (at 75) before being square rooted (at 77) and in Fig. 4 (not shown) in which an anologue signal corresponding to L is square rooted (at 107, 108), digitalized (at 110) and fed to one input of an AND gate 115. The other input of the AND gate is connected to a monostable 117 whose period is determined by a selected resistor corresponding to #T and a selected capacitor corresponding to #S. Thus pulses of frequency proportional to #L pass through AND gate 115 for a period proportional to #TS. They are counted (at 120) and displayed (at 122).
Patent GB-919043-A (GB)
Title: Sea-going vessel for transporting motor cars
Inventor: COCHIUS FREDERICK
IPC: B63B25/20
Filed: 1960-03-30
Abstract: 919,043. Ship construction. PHS. VAN OMMEREN N.V. March 30, 1960, No. 11299/60. Class 113. A vessel, for transporting motor cars, has a number of decks 3 which also comprise ballast and are made, e.g. from concrete slabs 4. Alternated with the decks 3 is a deck 5, preferably of grid construction, and a closed tonnage deck 6. Decks 8 and 9, e.g., alternatively built as fixed and grid constructions, are situated above a strength deck 7. A drivein ramp (not shown) is provided in the side of the vessel and the various decks are connected by ramps. The concrete decks 3 may be weighted with scrap iron and may be made thicker than necessary for constructional reasons. Two grid decks may be situated one above the other, which decks may be hoisted up to provide greater height above a deck.
Patent GB-946697-A (GB)
Title: Improvements in apparatus for drilling in earth covered rock
IPC: E21B7/20
Filed: 1961-03-28
Abstract: 946,697. Percussive drills. ATLAS COPCO A.B., and SANDVIKENS JERNVERKS A.B. March 28, 1961 [April 5, 1960], No. 11308/61. Heading B4C. [Also in Division E1] An adapter 47 has provision to be rotatably driven in the chuck 51 of a drill having a percussion and rotation motors 31, 32 and to support drill rods 77 and drill tubes 83 carrying bits 81, 86. The adapter has a flattened portion 50 which is slidable but non-rotatable in cavity 52 in the chuck which is rotated by a chain 66 driven by the pneumatic motor 32. The upper end of the adapter is struck by the hammer 37 of the pneumatic motor 31, a pipe 62 extending through the hammer into a bore 63 in the adapter to supply flushing liquid to the bit 81 through bores 93 in the drill rods. The drill is moved along guides 12 by a chain 25 driven by a pneumatic feed motor 22. The guides are carried by a frame 9 movable on wheels 10 on a frame 7 which is movable on wheels 8. An air hoist 106 adjacent a control panel 105 is provided for handling drill tubes. Drill rods and tubes are mounted on the adapter in the chuck, and the rotation and feed motors are started to drill through soft soil 3. When harder soil 4 or a boulder is reached the percussion motor is started, drilling proceeding by adding additional rods and tubes until the bits penetrate a few inches into hard rock 2. The tubes are disconnected from the adapter and drilling continues to drill a hole 116 using the bit 81 only. When the required depth of hole is reached the rods and bit 81 are withdrawn, a plastics tube is lowered into the tubes until its lower end seals with the top of the hole 116, and the tubes are -withdrawn.
Patent GB-400210-A (GB)
Title: Plate clutches
IPC: F16D13/71
Filed: 1933-04-18
Abstract: 400,210. Centrifugal clutches. HARDY, SPICER, & CO., Ltd., Birch Road, Witton, Birmingham. April 18, 1933, No. 11328. Convention date, April 19, 1932. [Class 80 (ii).] In a speed-responsive clutch, automatic release and engagement can be overruled at will by independent control means embodying means outside the clutch housing for effecting adjustment of the clutch. The driven plate 41 of the clutch is arranged between plates 7, 20 rotating with but axially movable in the driving flywheel 2. Springs 9 urge the plate 7 towards the flywheel web 3, while centrifugally-acting weights 12 lying in recesses 13 in the latter and carried by stems 11 extending through slots therein have feet 14 disposed between the plate 7 and the web 3. The plate 20 is urged towards the flanged end 16 of the flywheel by tension springs 18 and is urged towards the plate 41 by springs 25, 26 acting through radial levers 27 which pivot about an annular ridge 23 on a ring 22 secured in the flange 16 and engage an annular ridge 24 on the plate 20. One end of the springs 25, 26 bears against a disc 31 which is loosely mounted on a sleeve 29 slidable on the driven shaft 33 and which seats at its periphery against a portion 32 of the flange 16, while the other end of the spring acts on the inner ends of the levers 27, which cooperate with a flange 28 on the sleeve 29. The spring 26 is normally unstressed. The sleeve 29 is controlled by a yoke 36 fixed on a shaft 37 mounted in the end plate 38 of the clutch housing 39. A pedal 40 is fixed to one end of the shaft 37, while an arm 48 on the other end carries an adjustable screw 47 which cooperates with the end 46 of a latch 45 pivoted at 44 on a bracket 43 attached to the plate 38. The latch is controlled by Bowden mechanism 49 from a knob 50, and a spring 51 urges the end 46 towards the screw 47 when the knob 50 has been appropriately set. With the pedal in the normal intermediate position A, in which the latch is raised so that its end 46 lies between the screw 47 and the bracket 43, above a predetermined speed the weights 12 act through their feet 14 to move the plate 7 to the left to cause clutch engagement in two stages, first under the pressure of spring 25 only and then under the pressure of both springs 25 and 26 If the pedal is depressed to the position B, the plate 20 is moved by the springs 18 sufficiently to the left to prevent clutch engagement at all speeds. If, however, the knob 50 is pulled so as to lower the latch, the spring 25 acts to move the pedal into position C and move the plate 20 sufficiently to the right to cause clutch engagement at all speeds. By adjusting the screw 47, the automatic action may be regulated. Fan blades 54 on the levers 27 draw air through a funnel 53 and discharge it through an aperture 56 fitted with a flap 57 controlled by Bowden mechanism 58.
Patent GB-550088-A (GB)
Title: Improvements in and relating to gun-ammunition boxes
IPC: F42B39/00
Filed: 1941-09-06
Abstract: 550,088. Holders for ammunition projectiles. PEACE, A., and FIELD, C. L. Sept. 6, 1941. No. 11393. [Class 9 (i)] A clamp for clamping ammunition projectiles in a box comprises a fixed support 3 carried by an upright 5 of channel section metal, a movable support 4 with apertures to receive the upper ends of the projectiles, a clamping screw 8 in a nut 7 at the upper end of the upright and a pivoted distance piece 12 and support 11 adapted to be brought into position beneath the clamping screw for securing the projectiles to the support. A spring 15 disposed aroung the upright beneath the movable support 4 releases the projectile automatically as the distance piece is tilted away from the upright.
Patent GB-871295-A (GB)
Title: Polymerisation process
IPC: C08F20/60
Filed: 1958-04-10
Abstract: Polymers of amides of the general formula:  <FORM:0871295/IV (a)/1> in which m and n are each 1 or 2, k represents the integer 2 or 3, R1 and R2 are monovalent saturated hydrocarbon radicals containing 1 or 2 carbon atoms, and R3 represents a divalent saturated hydrocarbon radical containing 1 or 2 carbon atoms, are made by polymerizing the amide alone or in admixture with another monomer in the presence of a polymerization catalyst and in the presence of a medium saturated with carbon dioxide. The carbon dioxide is bubbled through the reaction mixture throughout the polymerization.  The reaction may be effected in bulk, solution, or aqueous emulsion.  When the polymerization is carried out in aqueous emulsion, conventional cationic or anionic emulsifiers may be employed.  The catalyst may be a peroxy compound or azo-diisobutyronitrile, alone or in conjunction with a reducing agent.  For solution polymerization, the solvent may be methylene chloride, benzene, dichlorethane, or a water-soluble aliphatic alcohol.  The polymerization may be effected in the presence of plasticizers, organic or inorganic pigments or fillers, or in situ on a substratum such as a textile material. Exemplified amides are acrylic acid-gamma-diethylaminopropylamide, fumaric acid-di[gamma-dimethylaminopropylamide], crotonic acid beta-diethylamino-ethylamide, and methacrylic acid-gamma-diethylaminopropylamide.  The other monomer may be selected from the following classes: vinyl esters, vinyl alkyl ketones, vinyl halides, styrene and substituted styrenes, acrylic and methacrylic acids and their esters and derivatives, crotonic acid, maleic and fumaric acids, isobutylene, butadiene, 2-chlorobutadiene and heterocyclic compounds containing a vinyl group.  Exemplified comonomers are a mixture of acrylic acid alkylamides, acrylic acid-tert. butylamide, styrene, acrylonitrile, a mixture of acrylonitrile and acrylic acid-tert. butylamide, dibutyl-amino-ethyl vinyl ether, fumaric acid diethyl ester, ethyl acrylate, and isobutyl acrylate.  The copolymers may be used for coating and impregnating textiles, fibres, and filaments.
Patent GB-1494945-A (GB)
Title: Registering counting apparatus
IPC: G08G1/01
Filed: 1975-03-19
Abstract: 1494945 Counting apparatus NEDERLANDHAARLEM FABRIEK VAN ELECTRISCHE APPARATEN BV 19 March 1975 [20 March 1974] 11448/75 Heading G4D A counting apparatus for counting events such as the passing of vehicles comprises a plurality of pulse counters and a corresponding plurality of memories together with a clock which causes the values in the counters to be stored in the memories at predetermined intervals, the memories being mounted in detachable carriers so they can be removed when full and replaced by fresh memories. The full memories then being read by a computer to derive required statistical information. The memories may be large shift registers capable of storing a large number of consecutive counts together with information regarding time and place of count &c.
Patent GB-1508431-A (GB)
Title: Ladders
IPC: E06C1/38
Filed: 1974-03-14
Abstract: 1508431 Ladders HICKMAN DESIGNS Ltd 13 March 1975 [14 March 1974 11 April 1974] 11457/74 and 16263/74 Heading E1S A ladder comprises two or more sections which can be extended or, e.g. angled to form a step ladder, each section comprising a central stile 14 with steps 17 pivotally mounted on each side and interconnected by one or more outer elongate elements 19. The sections may be identical, with each section carrying a pivotable and translatable element 120 (Figs. 5, 12) which firstly cooperates with a guide channel formed along the central stile of an adjacent section to allow relative sliding; secondly acts as a latch when one section is splayed out relative to the other to act as a stepladder (Fig. 11 not shown), and thirdly acts as a housing for a cable - actuated locking projection 150 which can be moved into engagement with any of a number of holes 170 formed along the adjacent sections central stile to allow variable extension. At the top of each section, the central stile also carries means whereby splayed sections can be locked together (Fig. 11 not shown) and further guide means 110 for facilitating relative sliding movement of sections, these means being provided by a nosing 108, Fig. 5. A further guide block 118 is provided below the element 120. Independently operable strutting arrangements are provided at each side of the foot of each section, including a telescopic upper stay 15 (Fig. 14). These arrangements can be folded down into line with the central stile for sections above the lowest one. The steps are strutted by a member 25 acting against the lowest step 20, means also being provided to lock the step 20 in its in - use position, and to release the step 20 for folding the steps, or some of them. The outer members 19 may be replaced by a number of separate members (224), Fig. 21 (not shown), and some of the steps may be arranged to be pivotable into an out-of-use position whilst the others remain in use and atached to the outer member.
Patent GB-360344-A (GB)
IPC: F21S8/00
Filed: 1931-04-17
Abstract: 360,344. Electric ceiling &c. lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Patent-Treuhand-Ges. f³r Elektrische Gliihlampen ; 11, Ehrenbergstrasse, Berlin.) April 17, 1931, No. 11471. Convention date, May 16, 1930. [Class 75 (iv).] An electric ceiling or like lamp for operating on ordinary line voltages comprises a box member having a frosted glass or like translucent part 2, containing one or more elongated or other incandescent lamp bulbs 4 and one or more luminous discharge tubes 3 provided with hot electrodes, and a metal or like opaque part 1 containing the heating, starting and regulating apparatus for the tubes 3. The bulbs 4 may serve as series resistances for the tubes 3, and the latter may contain a gas such as neon, helium, argon, nitrogen or carbon dioxide, a vapour such as sodium, mercury or cadmium (the latter two for daylight effects), or a mixture of gas and vapour. The bulbs 4 and the part 2 may be coloured or, together with the tubes 3, may be made of glass that is transparent to ultra-violet rays.
Patent GB-494710-A (GB)
Title: An improved device for preventing the condensation of steam on windows or elsewhere in a room or for removing such condensation
IPC: E06B7/12
Filed: 1937-04-22
Abstract: 494,710. Preventing condensation on windows. DAWES, S. C. W. April 22, 1937, No. 11485. [Class 20 (iii)] [Also in Groups XIII and XVII] For preventing condensation in a room, e.g. on windows, a moulded or compressed pyramidal block a of quicklime or calcium chloride is held unexposed for storage in a container having a tray-like member b on which the compound is exposed for use on removal of a lid c. Binding agents may be added to the block a, which is held in the bottom half of a square carton by a fastener b<1>, the lid c being sealed by a strip d. Reference has been directed by the Comptroller to U.S.A. Specification 2,036,909.