baber/WOPTO huggingface dataset:
Patent GB-793973-A (GB)
Title: Improvements in or relating to chromium-containing compositions of matter
IPC: C01G37/033
Filed: 1955-10-11
Abstract: An alkali metal dichromate dihydrate solution and an excess of sulphuric acid are reacted together to obtain a crystalline mass comprising chromium trioxide and sodium hydrogen sulphate and excess of sulphuric acid.  To this mass is added a solid alkaline metal dichromate or a saturated aqueous solution thereof in an amount in excess of that required to react with the free sulphuric acid of the crystalline mass, and the crude crystalline reaction product is separated to yield a crude form of chromium trioxide. The composition of matter contains between 70 and 95 per cent chromic acid between 1 and 25 per cent sodium bisulphate and the remainder water.  The parent Specification describes a similar process for the preparation of pure trioxide.ALSO:A composition consisting of 70-95 per cent chromic acid, 1-25 per cent sodium bisulphate, remainder water, may be used in the "chrome-dipping" of copper and bronze, and in the production of conversion coatings on cadmium and zinc.
Patent GB-671038-A (GB)
Title: Improved method of and apparatus for countercurrent contacting of solids with liquids
IPC: B01D11/02
Filed: 1948-11-08
Abstract: 671,038. Making extracts. STANDARD OIL DEVELOPMENT CO. Nov. 8, 1948 [Dec. 6, 1947], No. 29006/48. Class 81 (i). [Also in Group II] A method of contacting a liquid with granular solids of approximate particle size 20-200 mesh per linear inch in contiguous superposed zones separated by perforated partitions comprises, introducing said solids into an upper zone and introducing said liquid into a lower zone, thereafter passing said liquid upwardly through successive superimposed zones to said upper zone, said liquid being introduced to each of said zones at a plurality of points at the lower level of each zone at an upward velocity not exceeding approx. 1-5 feet per minute (to maintain a slurry in each zone, surmounted by a liquid layer) and being removed from the upper zone; maintaining the solids in a restricted column extending between adjoining zones as a dense slurry phase and preventing substantial liquid flow through said column whereby the solids flow downwardly through successive zones and are removed from said lower zone. The apparatus shown has perforated plates 25 on which the slurry phase is maintained and downcomers 6 to accommodate the columns of dense slurry. The solids enter at 2 and leave at the bottom and the liquid flows in at 5 and out at 4. Vanes 9 can be rotated to seal the downcomers until the dense slurry column is initially formed. The zones are separated by plates 15 and the pumps 17, with pipes 16 and 18, are provided to increase the pressure differential, and thus the throughput, of the apparatus.
Patent GB-1175012-A (GB)
Title: Method and apparatus for making tapered spring leaf blanks and the like
IPC: B21D53/88
Filed: 1967-06-23
Abstract: 1,175,012. Leaf springs. NORTH AMERICAN ROCKWELL CORP. 23 June, 1967 [12 Sept., 1966], No. 29056/67. Heading F2S. [Also in Division B3] A heavy duty tapered leaf spring has oppositely inclined flat surfaces 16, 18, a flat straight surface 23 and is of constant width. In an alternative form the bottom surface is also provided with taper surfaces, Fig. 8 (not shown).
Patent GB-1482612-A (GB)
Title: Device for centrally controlling a group of knitting machines
IPC: D04B15/66
Filed: 1974-07-01
Abstract: 1482612 Knitting machines ELITEX 1 July 1974 [12 July 1973] 29063/74 Heading D1C In a device for controlling each machine independently in a group of circular rotary cylinder knitting machines, there is for each machine a needle counter 8a to 8d, a course counter 12a to 12d and output signals from these counters are fed to a patterning memory 25 which produces an output pulse train, an accumulator 10a to 10d for each machine receives input signals from its associated needle counter, from the patterning memory and from a central control unit of the group. Needle cylinders la to 1d of four single feed circular knitting machines have needle selectors acted on at the selection point by an electromagnet and each cylinder carries a disc concentric therewith with openings near the circumference, one corresponding to each needle, and one opening at a shorter distance from the disc centre. Photoelectric pickups (2'a) and (2a) Figs. 2 and 3 (not shown) are provided on one side of the disc aligned with the paths of movement of the openings and opening, light sources being aligned with the pickups on the other side of the disc. Thus one pulse per needle is fed from pick-upc (2'a) to needle counters 8a to 8d and thence to accumulators 10a to 10d while pick-up (2a) feeds one pulse per course to course counters 12d to 12d and to needle counters 8a to 8d to zero them. Each counter consists of two binary counters (14), (15) Fig. 2 (not shown). Pulse generator 34 of control unit 29 generates pulses T which are fed to the counters and to accumulators 10a to 10d. Counters 8a to 8d and 12a to 12d feed respectively to decoders 21, 23 connected to the course and needle stores of the memory 25 which feeds the signals for the separate machines back to accumulators 10a to 10d. The time taken for a signal to arrive at any machine must be less than the fastest time taken for a needle cylinder circumference to move one needle space.
Patent GB-469871-A (GB)
Title: Improvements in valve arrangements for controlling the supply to gas consuming devices
IPC: F23Q21/00
Filed: 1936-10-26
Abstract: 469,871. Fluid - actuated valves. ETABLISSEMENTS A. THEOBALD. Oct. 26, 1936, Nos. 29079 and 29080. Convention dates, Oct. 24, 1935 and Feb. 18, 1936. [Class 135] A' diaphragm valve for controlling the supply of gas to consuming devices and operated by variations in the gas-pressure is arranged to open at a certain high pressure, and the effective surface area of the diaphragm then increases to such an extent that the valve will not close until the gas pressure falls below a certain low pressure. In the form shown, inlet pressure from the conduit 7 acts below the centre portion of the weighted diaphragm 5. When a wave of pressure arrives, the diaphragm rises and the normal pressure of gas acting over the whole area thereof maintains the diaphragm in raised position, so that gas flows to the burner 13. In the closed position shown, gas leaks past a pilot valve 14 to feed a pilot jet 12. When the diaphragm rises, the valve 14 moves to its upper seat, and while between the seats allows an increased supply of gas to flow to the pilot jet to produce a long igniting flame. The pilot jet is then extinguished altogether. A wave of low pressure causes the diaphragm 5 to fall, the pilot jet being then re-lit from the main burner. The space above the diaphragm is vented by a small hole 20 to produce a damping effect. In a simpler form, not shown, inlet pressure acts on the annular part only of the diaphragm when the valve is closed. A small hole in the diaphragm passes gas to the pilot jet through a loose double-seat valve which maintains pressure above the diaphragm.
Patent GB-159301-A (GB)
Title: Improvements in folding seats for use on vehicles
IPC: B60N2/30
Filed: 1919-11-22
Abstract: 159,301. Sunbeam Motor Car Co., Ltd., Coatalen, L., and Cooper, J. A. Nov. 22,1919. Folding seats.-In a folding seat of the type in which the seat proper is pivotally mounted on links pivoted to links resting on the floor when in use, and connected to part of the vehicle by arms, the front legs or links E are pivoted to the arms A so that as the arms A are lifted the seat tilts backwards and then collapses against the back of a seat Y to which the arms A are pivoted.
Patent GB-867322-A (GB)
Title: Improvements in or relating to shelving
IPC: A47B43/00
Filed: 1956-09-25
Abstract: 867,322. Shelves. SPERRING, E. D. Sept. 17, 1957 [Sept. 25, 1956], No. 29212/56. Classes 52(1) and 52(5). Adjustable shelving comprises L-shaped support brackets 1, 2, having slotted caps 3, 4 for engagement with screws projecting from a vertical surface and a shelf 7 having sockets to receive horizontal limbs 1b, 2b of the support brackets and limbs 1 1a, 12a of U-shape coupling brackets 11, 12. The limbs 11a, 12a are of selected length so that shelves 15, 17 are coupled at distances to suit the articles supported. The socketed face of each shelf has a reinforcing strip 10 and the limbs of the brackets have annular grooves 18 engaged by spring-pressed balls 19. In a modification the shelves are enclosed by rear and side walls and a hanger hook 24 is provided.
Patent GB-372230-A (GB)
Title: Improvements in or relating to apparatus for towing hydroplanes on the sea
IPC: B63B21/56
Filed: 1931-10-21
Abstract: 372,230. Towing. ARMAN, J., 146, Avenue du Prado, Marseilles. France. Oct. 21, 1931, No. 29278. Convention date, Oct. 31, 1930. [Class 114.1 In a towing device more particularly designed for towing hydroplanes, two tow ropes C, C<1> are led from windlasses T on the tow-boat A through rings E on drifting floats D, D<1> to the craft G to be towed. The floats D, D<1>, which are connected to the tow-boat by ropes B, B<1>, are fitted with deep keels which under towing conditions tend to maintain the floats at a considerable distance apart and thus absorb variations in the tractive force. Weights P may also be strung on the tow ropes to increase this effect and to calm the sea, oil may be discharged from bags on the floats.
Patent GB-676938-A (GB)
Title: Dry chemical fire extinguisher
IPC: A62C13/00
Filed: 1950-11-29
Abstract: 676,938. Valves; spray-producers &c. SAFETY FIRST PRODUCTS CORPORATION. Nov. 29, 1950 [April 28, 1950], No. 29300/50. Classes 69 (iii) and 135. A dry chemical fire extinguisher comprises a bottle 10 in an opening 11 of which is mounted a spring- loaded, hand-operated plunger valve 28, and means for increasing the effectiveness of the valve seating which also prevents accidental opening of the valve. The valve, e.g. of nylon, is levered open by the handle 60 and locked closed by a pivoted bail 74 pressed on the valve stem 32 when a hand-operated cam 90, pivoted on a post 82, is forced on to the bail. The sealing pressure of the valve is adjusted by the nut 66 or by screwing the post, after removing the cam pivot 86, cam and bail and using the cam and its handle 84 as a turning tool. A sealing wire passing through holes 92 is sheared when the handle 84 is lifted. The discharge nozzle 18 contains a conical member 48 threaded in an apertured partition 52 so that the powder forms a hollow conical stream.
Patent GB-188935-A (GB)
Title: Improvements in or relating to folding baby-carriages
IPC: B62B7/10
Filed: 1921-11-03
Abstract: 188,935. Atkins, E. Nov. 3, 1921. Springs, arrangement of.- Relates to folding perambulators of the type in which a collapsable body frame is mounted on C-springs carried by the axles and lying approximately within the height of the wheels. The body 10 is arranged on a frame 11 supported by links 31 on a frame 30, and the under carriage comprises springs 23 formed at the ends as C-springs and secured by bolts to the axles 20, 21. The undercarriage is sufficiently low to lie within the height of the running wheels, lateral pintles 32 serving, with straps 33, to connect the springs to the frame 30. Tie rods 25, 26 for the axles may be provided; or in a modification the parts of the springs between the axles may be arranged as bow springs, and tie rods dispensed with.
Patent GB-387299-A (GB)
Title: Improvements in shock absorbers or vibration dampers
IPC: F16F9/26
Filed: 1931-10-29
Abstract: 387,299. Hydraulic shock-absorbers. RIPPINGILLE, F. S., 55, Hagley Road, Edgbaston, Birmingham. Oct. 29, 1931, No. 29438/32. Divided on 385,390. [Class 108 (iii).] A vehicle fluid-friction shock-absorber of the type in which a piston 2 is reciprocated in a fluid-containing cylinder 1 by an external angularly-movable arm so as to force fluid through restricted passages includes a chamber 5 integral with the cylinder, a rock-shaft 6 crossing the chamber and having one end extending through a sleeve-bearing extension 8, a pin 11 pivotally mounted in the piston 2, and an operating-arm 13 engaging in a hole 12 in the pin 11 and fixed within a hole 14 in the rock-shaft 6, the chamber or opposite side of the cylinder having an opening e.g., 15, through which the operating arm can be introduced. The operating-arm is fastened in position by a sliding pin 18 passing axially through the rock-shaft and engaging in a groove or recess 19 in the operating-arm and the opening 15 is closed by a screwed plug 16. The shock-absorber functions in the manner described in Specification 385,390.
Patent GB-413916-A (GB)
Title: Improvements in and relating to fire-arms
IPC: F41A15/16
Filed: 1933-10-25
Abstract: 413,916. Smallarms and machine guns. CESKOSLOVENSKA ZBROJOVKA AKCIOVA SPOLECNOST V. BRNE, and STALLER, K., 7, U Lazaretu, Br³nn, Czecho-Slovakia. Oct. 25, 1933, No. 29583. [Classes 92 (ii) and 119.] In order to prevent a percussion-cap 18, which may have become loosened, from falling out of a cartridge-case 15 during ejection and so possibly jamming the breech-action, a chisellike ejector 12 is provided which indents the base of the cartridge adjacent the bore receiving the percussion-cap, when the breech is opened.
Patent GB-161618-A (GB)
Title: Improvements in driving and control mechanism, particularly for planing machines
IPC: B23Q5/04
Filed: 1919-11-27
Abstract: 161,618. Newton, F., and Newton Bros. (Derby), Ltd. Nov. 27, 1919. Planing. - The double epicyclic gear shown, is arranged for driving and reversing at the same or at different speeds by rendering different elements the fixed gear in the train by means of brakes. The gear comprises a transmission shaft 18 carrying a sun-wheel 8 driving pinion 7 in a planet-carrier 6, to which are fixedly secured a brake-drum 19 and the sunwheel 4. The latter meshes with the pinions 3 of a second planet-carrier 2 forming part of the driven-shaft 1. A drum 5 has internal teeth meshing with the pinions 3 and 7 and carries the brake-wheel 16 by means of the end plate 10. Direct or reverse driving is effected by braking the wheels 16 or 19 respectively. The gear is stated to be specially suitable for planing machines and when so applied, the brakes are operated by the movement of the machine table. In one such application, Fig. 2, the brake bands 20, 21 are linked to springs 22, 23 controlled from the table projection 29 through the links 24, 26. The release of the brake 20 by compression of the springs 22 is accompanied by the lever 26 tripping the spring 23, thereby applying the brake 21. The gear is duplicated for similar operation at each end of the stroke, and dashpots may be used to ensure gradual application of the brake.
Patent GB-694379-A (GB)
Title: Tubular articles, for example lamp shades
IPC: B29C49/02
Filed: 1950-12-04
Abstract: 694,379. Moulding tubular articles from thermoplastic strip material BORKLAND, G. W. Dec. 4, 1950 [Dec. 21, 1949]. No. 29658/50. Class 87 (ii). [Also in Group XI]. A flat thin strip of thermoplastic material is bent cold into the general shape of the article, the bent strip is placed in contact with a moulding surface having the same general shape but provided with one or more cavities which form protuberances on the articles, the strip is heated, and fluid pressure is applied to the hot strip to force it against the'moulding surface and into the cavities. In making a lampshade an arcuate strip 10, which may be decorated, printed, &c. is bent into frusto-conical shape 11, Fig. 3. The ends may overlap, as at 13, or may form a butt joint, and may be secured together by a strip of thermoplastic material. The bent strip is placed in a frusto-conical recess 19 in a mould 17, the recess having cavities 20 of flower, hemisphere, ribbon or other shape. An electrical heating element 33 is lowered into the bent strip to soften the latter, the parts 34, 35 thereof, which are formed of heat-resisting insulating material, engaging the bent strip 11. The softened strip is sucked on to the mould and into the cavities by a vacuum pump. The pump acts through conduit 23, annular chamber 22 and conduits 21 which open into the cavities. Embossments 43 are thus formed on the lampshade (Fig. 5). At the same time two annular grooves 44, 46 are formed in the lampshade by suction applied to annular grooves 27, 29 in the mould. The groove 44 receives a support ring 45, and the groove 46 strengthens the base of the shade. To prevent loss of vacuum, the joint 13 is covered with a strip which holds it flat against the mould. This strip may be of metal, wood or thermosetting laminated material. Instead of using vacuum, air pressure or steam pressure can be applied to the inside of the conical strip 11. The heating means may be steam or infra-red bulbs. Fig. 6 shows modified apparatus for forming embossments on the inside of a frusto-conical shade, the bent strip 11 being in this instance fitted over a mandrel 52 having cavities 54 connected by openings 55 to the interior of the mandrel which is connected to vacuum through conduit 57. The heating means comprises insulating rings 64, 65 carrying electrical heating elements 74, the rings being brought down into contact with the strip. In both of the examples shown, either the heater or the mould or both may move towards each other. The thermoplastic material may be cellulose acetate, ethyl cellulose, vinyl resin or methyl methacrylate resin.
Patent GB-692338-A (GB)
Title: Device for reading illuminated scales, the image of which formed on frosted glass
IPC: G01G23/32
Filed: 1951-12-18
Abstract: 692,338. Weighing-apparatus. KRAUT, sen., W., KRAUT, jun., W., and KRAUT, E., [trading as BIZERBA WAAGENFABRIK W. KRAUT KOMMANDIT-GES.]. Dec. 18, 1951 [Dec. 18, 1950]. No. 29686/51. Class 143. [Also in Group XIX]. The image of the price scale 7 of a weighing machine is projected by the optical system 5, 6, 8, on to a frosted glass screen 4 which forms the bottom, of a lateral recess in the housing 1 of the machine. The screen 4 is viewed through a vertical glass window 3 and inclined mirror 10 which can be rotated to its optimum position, about a horizontal axis along its lower edge.
Patent GB-759892-A (GB)
Title: Jet thrust reversing apparatus for aircraft
IPC: F02K1/58
Filed: 1954-10-15
Abstract: 759,892. Controlling jet-propelled aircraft. BOEING AIRPLANE CO. Oct. 15, 1954 [June 16, 1954], No. 29780/54. Class 4. In an aircraft powered by a jet propulsion plant, mechanism for reversing jet thrust comprises a gutter closed at its ends and mechanism supporting and guiding said gutter for movement between an operative position wherein the gutter is spaced behind and disposed transversely of the thrust axis of the engine to intercept the issuing gases, and an inoperative position and actuating means for retracting and projecting the gutter between such two positions. The nacelle 9 of the power plant is mounted on the underside of a wing (not shown) by a narrow elongated structure 90 which is provided with a cavity 93, enclosed by hinged doors 94, to enclose a gutter comprising collapsible hinged plates 1a, 1b closed at their ends by hinged end-plates 51, 52 and pivotally mounted on a member 11 rotated about a transverse pivot 12 between an inoperative position within the cavity 93 to the operative position shown in which the gutter comprised by the plates 1a, 1b, 51 and 52 is located behind the jet nozzle 91 to intercept and project forwardly the gases issuing therefrom. Mechanism for swinging the member 11 comprises a jack 2 which is pivoted at 36 to one arm of a bell-crank 3 secured by a pivot 21 to the upper end of the member 11. The other arm of the bell-crank is connected by a link 34 to the common pivot 35 of a toggle linkage 31, 32, the extremities of which are respetively pivoted at 33 and 30 to the member 11 and fixed structure. The pivot 30 is extended at each side to carry a plate 6, slotted at 60 for the end of an arm 61 fast with the appropriate door 94 whereby these may be opened and closed by the initial and final movements respectively of the jack 2. This action is assisted by springs 63. In order that the plates 1a, 1b may be swung from adjacent parallel planes to the position shown while the member 11 is being lowered, a pair of interconnected links 41, 42 are secured to the plates and to a block 4 mounted for axial movement on a shaft 40 under the control of a link 46 and a telescopic assembly 43, 44 whereby the plates 1a, 1b are opened automatically with swinging movement of the member 11. Specifications 638,063, 754,808 and 759,891 are referred to.
Patent GB-803990-A (GB)
Title: Improvements in or relating to the anodic treatment of uranium metal
Inventor: HUDDLE ROY ALFRED ULFKETEL
IPC: C25F1/10
Filed: 1950-12-06
Abstract: 803,990. Electrolytically cleaning uranium. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Jan. 15, 1952 [Dec. 6, 1950], No. 29869/50. Class 41. Uranium is cleaned and a bright surface is produced by subjecting it to a passivating treatment by making it an anode in a strongly dehydrating acid medium which may be concentrated sulphuric acid alone or mixed with an oxidizing substance, e.g. 5 per cent by weight of chromic acid. Typically uranium turnings after degreasing are placed in an inclined tumbling barrel having walls of or being lined with glass, ceramic, or other non-conducting acid-resisting material, in contact with a cylindrical lead electrode connected as anode which is arranged inside the barrel, and a porous pot is inserted inside the cylindrical electrode and surrounds a further lead electrode which serves as cathode. The turnings are covered with the acid electrolyte and the porous pot is filled to the same level. A potential of 12 volts is applied between the electrodes while rotating the barrel until the current drops, indicating the formation of a coating on the turnings, which are then drained, washed successively in water and acetone, and dried. The Provisional Specification states that uranium surfaces so treated may be electroplated with nickel or other metals.
Patent GB-653949-A (GB)
Title: Improvements in or relating to door locks
IPC: E05B63/16
Filed: 1948-11-17
Abstract: 653,949. Sliding latches. BACKHOUSE, H. T. Nov. 17, 1948, No. 29932. [Class 44] A sliding latch bolt 3 is withdrawn from either side of the door by rotation of independent followers 6, 7, which when rotated in the opposite direction lock the bolt in the projected position. When either follower is moved to the locking position it engages the wedgeshaped upper surface of a stop member 12: to rotate it against the resilience of the wire 13 on which it is mounted into the path of the second follower to prevent the bolt being locked by both followers simultaneously. If it is desired to prevent locking by one of the followers, the wire 13 may be pulled outwardly against the action of a spring 16 and after rotation its inturned end inserted in another of a set of holes 15 in the front plate 14 of the lock case. The latch bolt slide 2 is provided with a surface 11 against which the follower acts when moved to the locking position to force home the bolt. The followers are acted upon by springs 10 and their hubs 8 have sockets to receive the square sectioned operating spindles. A reversible bolt head 3 may be pulled outwardly against spring 4 and then rotated 180 degrees. Specification 496,776 is referred to.