baber/WOPTO huggingface dataset:
Patent GB-742684-A (GB)
Title: Improvements in or relating to radio frequency amplifiers
Inventor: DAVIDSON WESTLAND
IPC: H03F1/54
Filed: 1953-07-28
Abstract: 742,684. Discharge tube supply circuits. PYE, Ltd. July 28, 1954 [July 28, 1953], No. 20894/53. Class 40 (6). In a radio frequency amplifier an auxiliary grid is energized by rectifying the radio frequency voltage derived from the output of the amplifier. The output from discharge tube V1  is rectified by diode V2 and the D.C. voltage appearing across capacitor C3 is applied over inductor L2 to the screen grid of tube V1. In the event of failure of the R.F. grid drive, the screen grid potential falls to prevent excessive dissipation in the tube. A similar effect occurs when the anode circuit is de-tuned. A pentode may be employed instead of a tetrode and a metal rectifier used in place of tube V2.
Patent GB-614370-A (GB)
Title: Industrial work table
IPC: B25H1/12
Filed: 1946-07-12
Abstract: 614,370. Work benches. SAUL, S. July 12, 1946, No. 20903. [Class 61 (ii)] [Also in Groups XXX and XXXII] A mobile work table comprises a base 2 on castors 3 so that it may be moved about pairs of upright frame members 5, 6 supporting a flat top 11 and so disposed as to leave the structure open from the front and ends and hook formations 7 along the front uprights 6 adapted to receive removable trays for holding parts to be assembled in the work-piece supported on the table top or removed therefrom. Handles 17 are provided on the uprights by which the tables may be manipulated and moved about, but where they are to be moved along an assembly line the base 2 is provided with a hinged hook 18 adapted to be moved by a lever 20 to engage a conveyer chain 22 moving along a trough in the shop floor, a lever-operated floor brake 23 being also provided for operation when the table is to be held immovable. Specification 571,895, [Group XIV], is referred to.
Patent GB-442654-A (GB)
Title: An improved cover for non-returnable potato barrels
IPC: B65D43/00
Filed: 1935-07-27
Abstract: 442,654. Covers for potato barrels. LE MAISTRE, J. S., 21, Commercial Buildings, and LE MAISTRE, F. J., 17, Old Street, both in St. Helier, Jersey, Channel Islands. July 27, 1935, No. 21359. [Class 21] A cover for non-returnable barrels, of the type consisting of a sheet of ply. wood bent tc cylindrical form, reinforced with plywood strips at top and bottom and fitted with a plywood disc bottom, is constructed from radially arranged tinned sheet iron strips c, Figs. 3 and 4, secured by a rivet at d and bent over a plywood strip a, the ends of which are lapped. The strips are secured by rivets f and are perforated at g to take nails which secure it to the barrel.
Patent GB-367714-A (GB)
Title: Improvements in or relating to sparking plugs for internal combustion engines
IPC: H01T13/16
Filed: 1931-07-28
Abstract: 367,714. Sparking - plugs. KEGRESSE, A., 156, Rue Armand Silvestre, Courbevoie, France. July 28, 1931, No. 21577. Convention date, July 29, 1930. Addition to 351,340. [Classes 7 (ii) and 7 (iv).] Sparking-plug housings in direct contact with the cooling water are ribbed. According to the Specification as open to inspection under Sect. 91 (3) (a) ribbed housings for aircooled engines may be integral with or braced to the cylinder head. This subject-matter does not appear in the Specification as accepted.
Patent GB-647323-A (GB)
Title: Improvements relating to shaving brushes
IPC: A46B15/00
Filed: 1948-08-17
Abstract: 647,323. Shaving brushes. LENG, A. C. Aug. 17, 1948, No. 21685. [Class 19] A shaving brush comprises bristles inserted in a thick base c of natural or synthetic rubber, having a socket with thin walls d and a shoulder e and string binding f. The ends of the bristles may be impregnated with a rubber solution and vulcanized before insertion in the socket.
Patent GB-150904-A (GB)
Title: Improvements in self-filling fountain pen
IPC: B43K5/04
Filed: 1919-09-04
Abstract: 150,904. Heilbrun, I. S. Sept. 4, 1919. Reservoir pens.-The lever 7 for compressing the sac 3 in a self-filling reservoir pen is pivoted at 8 in a separate frame 5 fitting in a slot in the barrel 1 of the pen, and held in place by flanges 6 extending completely round its lower edge.
Patent GB-167671-A (GB)
Title: Improvements in gas fires
IPC: F24C15/24
Filed: 1920-07-20
Abstract: 167,671. Stimex Gas Stove Co., Ltd., and Sayner, G. S. July 20, 1920. Gas fires.-A gas fire consists of a hollow upright slab of fireclay &c. having a front portion of ogee profile with an overhanging part perforated with fine burner holes b and roughened or burred. Gas mixture is supplied to the interior by a venturi mixture pipe e at the bottom. The front is formed with vertical corrugations which, as indicated to the left of Fig. 3, may be developed into separate channels each supplied by a separate mixing-tube nipple h.
Patent GB-1508483-A (GB)
Title: Method for the heat transfer capability of a metal heat transfer surface
IPC: B21C37/26
Filed: 1975-05-21
Abstract: 1508483 Heat exchanger tubes UOP Inc 21 May 1975 [21 Aug 1974] 21758/75 Heading F4S [Also in Division B3] A process for improving the heat transfer capability of a metal heat transfer surface comprises knurling the surface and then finning the knurled surface. Tube 10 is passed over a mandrel (14), Fig. 3 (not shown) from left to right and surrounded by four tools, each as shown in Fig. 4, so that it is first knurled by portion 26, then finned by portions 30 and 16. The process produces splits (36), Fig. 2 (not shown) of a desired size in the outer tips of the fins, to provide nucleate boiling sites. The tube is of copper. The inside of the tube may be left plain or processed, e.g. by internal ridging.
Patent GB-500614-A (GB)
Title: Improvements in or relating to pasteurising apparatus
IPC: A23L3/04
Filed: 1937-08-07
Abstract: 500,614. Endless - chain conveyers. HOPKINS, A. D., and HOPKINS & SONS, Ltd., G. Aug. 7, 1937, No. 21793. [Class 78 (i)] [Also in Group VI] In apparatus for pasteurizing bottled &c. goods, the bottles &c. are pushed over a stationary platform 3 by transverse bars 18 attached to two endless chains 15, two sliding plates 29, 30, running on rollers 31 being provided at the, discharge end of the platform between which a gap is opened to allow descent of the bars 18. The plate 30 has an upstanding lug 34 which is engaged by the pusher bars 18 which move it forward, to form the gap, away from plate 29 which is also moved forward by the engagement with a depending abutment 32 thereon of rollers 33 secured to a wheel 16. The plate 29 isadvanced further nearly to close the gap. A roller 36 is supported by lugs 36<1> on plate 30, and on a forward movement of the plate engages with one arm 38 of a bell-crank lever which is rocked bringing its other arm 41 into the path of rollers 42 on a wheel coaxial and rotating with wheel 16. When a roller 42 engages with arm 41 the lever is rocked and the plates 29, 30 are pushed back to their initial position.
Patent GB-145811-A (GB)
Title: Tractor connection for agricultural implements
IPC: A01D37/00
Filed: 1918-12-30
Abstract: 145,811. Fairweather, H. G. C., (Moline Plow Co.). Dec. 30, 1918. Controlling-apparatus, arrangements of hand gear in conjunction with.-Apparatus for steering and controlling tractors to which grain binders and other agricultural implements are attached comprises detachable extension rods &c. extending to the seat of the implement. The tractor consists of a two-wheeled power unit provided with a rearwardly-extending beam 1<c>, Fig. 1, connected to a supporting-truck 2. The forward end of the beam 1<c> is in the form of a yoke 1<d>, which is pivoted to the tractor on a vertical axis. The tractor is steered by rotating a pinion 3 in gear with a curved rack on the tractor frame. The pinion 3 is operated by gearing connected with a squared shaft 5. The truck wheels 11 of the supporting-truck are mounted on a swivelling-axle 12 which is connected by links 16 to a bracket 17 on the tractor frame. The gear-shifting mechanism of the tractor is connected by a rod 38 to a hand-lever 37 working in an H-slot in a segment frame 34, Fig. 6. The clutch-controlling rod 40 is connected to a hand lever 39 provided with an internal locking-latch co-operating with a toothed segment 36. The fuel-controlling shaft 41 is operated by a handwheel 41a. To enable the mechanism to be controlled from the seat A of the binder, detachable extension rods 48, 49, and 50 are provided. The rods 48, 49 are connected respectively to a clip 52 and clip frame 55 on levers 37, 39. They pass loosely through a guide plate 53, Fig. 5, and terminate in handles 48a and 49<a> respectively. The locking-latch in the lever 39 is operated by a rod passing through the tubular rod 49 and connected to an elbow lever actuated by a sliding-pin 60 in the handle 49a. The rod 50 is hooked to the handwheel 41a and is provided with a hand-wheel 63. It is supported by spring fingers 64, Fig. 5, on a plate 65 adapted to slide on a guide plate 66. The slide plate 65 is connected by a detachable connecting-rod 72 to a plate 76 damped to the beam 1<c>. The squared steering-red 5 fits into a sleeve 89, Fig. 6, supported by an adjustable standard 91 and jointed to an extension shaft 86, the squared end of which fits into the stem 43<a> of a hand wheel 43. The stem 43<a> is supported by a standard 45 adjustably mounted on a swivelling support on the slide 65. When the binder is detached and the extension rods 48, 49, 50, &c. removed, a seat 42, Fig. 7, for the driver is detachably connected to the rear part of the truck 2. The stem 43<a> of the steering-wheel 43 is now directly connected to the squared steering-rod 5, its support being adjustably connected to a plate 33 on the beam 1<c> at the angle shown. The disconnected ends of the rods 48, 49, and 50 fit into a spring clip B, Fig. 1, on the disconnected rod 72.
Patent GB-294882-A (GB)
Title: Improvements in and relating to vapour engines
IPC: F01K25/06
Filed: 1928-07-27
Abstract: 294,882. International General Electric Co., Inc., (Assignees of Allgemeine Electricitõts Ges.). July 30, 1927, [Convention date]. Vapour engines.-To generate power a solution of gas, e.g. ammonia, is heated in a boiler a, the gas or mixture passing to a turbine e. The exhaust passes to a cooling and absorption chamber f. The solution is pumped from the chamber f through a regenerator k to the drum b of the boiler. The surplus water in drum c passes through the regenerator to the chamber f and works a turbine g which in conjunction with a motor i drives the pump h.
Patent GB-1191191-A (GB)
Title: Improvements in Electron Microscopes
Inventor: KATAGIRI SHINJIRO
IPC: H01J37/147
Filed: 1968-05-08
Abstract: 1,191,191. Electron microscopes. HITACHI Ltd. 8 May, 1968, No. 21871/68. Heading H1D. An electron microscope has deflecting coils 11, 11<SP>1</SP>, 12, 12<SP>1</SP> positioned between an objective lens 5 and an intermediate lens 7 so as to compensate for the leakage field produced by lens 7 which otherwise would produce a lack of correspondence between the diffraction image and the microscope image when the exciting current of the intermediate lens is varied to selectively produce a microscope image or a diffraction image of a specimen 4. The four deflecting coils are disposed as two pairs of coils at right angles, both members of a pair being connected in series. Current is supplied to each pair of the deflecting coils through a variable resistance and a change-over switch, and the power source supplies the deflecting coils and the coil of the intermediate lens in series. Instead of two pairs of coils, only one pair of coils may be provided which is mechanically rotatable through 360 degrees.
Patent GB-830285-A (GB)
Title: Improvements in or relating to the casting of metals
Inventor: CHERRY GEORGE JOSEPH NALL
IPC: B22D7/10
Filed: 1957-07-10
Abstract: 830,285. Ingot-moulds. FOUNDRY SERVICES Ltd. July 3, 1958 [July 10, 1957], No. 21912/57. Class 83 (1). A retaining-ring 3 for a hot-top 1 comprises a pawl or pawls 5 which, in the assembled position and under the action of gravity, enter into a recess or recesses 2 in the hot-top wall so that the assembly may be lifted on to and from the mould. Specification 627,678 is referred to.
Patent GB-500493-A (GB)
Title: Acoustic horns
IPC: H04R1/34
Filed: 1937-08-09
Abstract: 500,493. Acoustic horns. YOUNG, L., and YOUNG, A. Aug. 9, 1937, No. 21935. [Class 13] An acoustic horn has an air column conduit incorporating a cavity wall structure which is loaded wholly or in part with cork. As shown the invention is applied to a multicellular horn comprising a number of conduits 5 with curved walls forming the cavities which are filled with cork 8, preferably of granulatad or chipped form. The cork may be mixed with an agglutinant or spirit and forced under pressure through an opening 9 in the outer wall of the horn and may be maintained under pressure in the cavities. In some cases, the cork may be wholly or in part in the form of strips or plates.
Patent GB-641482-A (GB)
Title: Improvements in and relating to optical glass
IPC: C03C3/072
Filed: 1947-08-08
Abstract: 641,482. Glass manufacture. KODAK, Ltd. Aug. 8, 1947, No. 21971. Convention date, Aug. 9, 1946. [Class 56] A colourless, low melting point, moisture resistant optical glass contains at least 50 per cent by weight of the following oxides, within the ranges given after each: BeO 3-16; Al 2 O 3  2.5-23; SiO 2  10-34; B 2 O 3  21-47.5; Li 2 O 8-18.5. Numerous examples are given, some containing also one or more of the following: CaO, ZnO, SrO, CdO, PbO. BaO. A volatile colourant, a sulphide or a selenide may be added to the glass. Specification 613,718 is referred to
Patent GB-647496-A (GB)
Title: Improvements relating to the production of ceramic ware
IPC: B28B11/06
Filed: 1947-08-08
Abstract: 647,496. Hoppers; endless-belt conveyers. SCHWEITZER, H. V. Aug. 8, 1947, No. 22112. Convention date, Dec. 28, 1943. [Class 78 (i)] [Also in Group V] A machine for sanding unfired or green ceramic ware with silica sand, powdered flint, clay, &c. comprises an adjustable speed endless-belt conveyer for moving the ware from a loading to an unloading station, and means to vibrate the conveyer and the ware so as to pack the sand evenly around the ware. A hopper 30 with compartments 32, 33, Figs. 1, 3, is positioned above the conveyer 15. Sand is fed from a bulk container 38 into the hopper and discharged through adjustable gates 34, 35, in compartments 32, 33, on to the conveyer, the rate of discharge past each of the gates 34, 35, being controlled by the adjusting screws 36, 37, respectively. The stack or bung of ware is carried from the loading station over belt-supporting rollers 22 on to inclined rollers 20 which form the upper run of the belt into trough shape by raising up the marginal sides of the belt, and also slightly vibrate the bung. The return run of the belt is supported by rollers 23. The bung is thus carried beneath the hopper where it is lightly sanded from the compartment 32 and heavily sanded so as to be completely covered from the compartment 33. The bungs are then conveyed over a sprung plate 50 and vibrated by an electrical synchronous vibrator 55, which in conjunction with the flexing movements of the troughed conveyer sides causes the sand to pack around the ware. After passing over the vibrating plate the bung then leaves the troughing rollers and moves on to another set of supporting rollers 21, the conveyer sides flatten allowing some of the surplus sand to fall into gutters 42, and an adjustable scraper 47 removes the surplus sand from the top of the bung. The ware is then moved on to an unloading grill 45 where it is removed for firing, the surplus sand being collected from the gutters and grill into a sump 41. If the allowed height of the machine is insufficient to permit the collection by gravity of the surplus sand, the collecting hopper 40 may be supplied with vibrators or similar feed means to cause the sand to flow into the sump. The number of hopper discharge gates may be increased, or the hopper may be closed by a plate adjusted so that the discharge slot of the hopper will be narrow toward the loading end and wider toward the discharge end of the machine.
Patent GB-202833-A (GB)
Title: Improvements in electric switches
IPC: H01H19/58
Filed: 1922-08-16
Abstract: 202,833. Hansell, J. B., and Metro politan-Vickers Electrical Co., Ltd. Aug. 16, 1922. Polyphase transformers; regulating transformers.-In a switch applicable for changing transformer tappings, the axis of the operating spindle is normal to the axis of rotation of the movable contacts, and the spindle has an orifice co-operating with pins on the contact carrier to rotate it. The contacts of each of three groups are engaged, as shown, by arms 7 on a disc 6 mounted to rotate on the base and carrying pins 11 which are successively engaged by an orifice formed in an enlargement 15 of the operating spindle 12. The latter is mounted in bearings in a bracket 9 and in a pin 8 secured thereto and forming a guide for a spring 10 which presses the contacts into engagement. In operation, the spindle is rotated a half-turn, the disc being moved away from the base by the enlargememt 15 against the action of the spring 10. The edge of the enlargement then engages one of the pins 11 and moves it to rotate the disc 6, and finally, when the spring 10 restores the disc 6, the arms 7 will engage the next contacts of their respective groups. Such a, switch may be mounted under oil in a transformer tank and be operated from outside by a handle.
Patent GB-353695-A (GB)
Title: Improvements relating to weighing scales
IPC: G01G1/18
Filed: 1930-07-25
Abstract: 353,695. Weighing-apparatus. SOUTHERTON, J. F., 22, Augusta Road, Acocks Green, Birmingham. July 25, 1930, No. 22453. [Class 143.] Casings.-A weighing scale is provided with a two-part waterproof metal case a, h for enclosing the scale beam d and bearings, the lower part a of the case being formed with sloping sides to provide one or more lubricant troughs. Oil placed in the bottom of the lower part a lubricates the lower mechanism. The shape of the upper and lower parts of the casing forms troughs about the main bearings c so that by turning the case first to one side and then to the other oil can be passed from the bottom of the casing to the side troughs to lubricate the main bearings. A rubber washer j effects a tight joint between the two parts of the casing. The upper casing h has annular projections l around the pan supports which are provided with inverted cup-like parts m. The projections l may be in the form of annular channels.
Patent GB-706265-A (GB)
Title: Improvements in or relating to the connection together of parallel rigid strip or channel elements in structural metalwork
IPC: E04B1/58
Filed: 1951-09-26
Abstract: 706,265. Connecting structural members. DUCROX, R. Sept. 26, 1951 [Sept. 26, 1950], No. 22465/51. Class 20 (2) Parallel strip or channel members 4, 3 are connected together by an inclined tongue 11 on one member engaging with or through the other member, which tongue, when the members are moved relatively longitudinally, draws the members together. As shown the tongue 11 engages another tongue 12 on the other member 3. The channel 3 fits within the channel 4 and strips 1, 2 are welded to the channels which may also be connected by a rivet 21. In a modification, Figs. 3, 4 (not shown), two strips are connected by tongues engaging apertures in the other strip.
Patent GB-1091053-A (GB)
Title: Cooling or heating roll
IPC: F26B13/18
Filed: 1966-05-20
Abstract: 1,091,053. Rollers. MASCHINENFABRIK WINKLER, FALLERT & CO., A.G. May 20, 1966 [May 20, 1965], No. 22557/66. Heading F2U. Cooling or heating of a roll 1 is effected by fluid circulated by a power driven impeller pump 15 mounted within a by-pass tube 7 supported within the roll 1, cooling or heated fluid, e.g. hot water being supplied at one end 4 and exhausted at the other end through ducts 16, 5, 18., or the roll 1 may be provided with electric heating, as is also the case in Fig. 2 (not shown) in which the fluid is sealed within the roll and heated electrically by elements (28). In the sealed roll in Fig. 2 a metal or plastics bellows (25) or compensation vessel (not shown) absorbs expansion of the heating fluid.
Patent GB-354993-A (GB)
Title: Improvements relating to hinges or pivotal connections for folding frame or panel structures
IPC: E05D3/06
Filed: 1930-07-26
Abstract: 354,993. Double hinges. WALES, Ltd., Atlas Works, Oozells Street, and BLACKMORE, A. E., 35, Bankes Road, Small Heath, both in Birmingham. July 26, 1930, No. 22565. [Class 65 (ii).] A double hinge for folding frames, such as for folding spring mattresses, is arranged so that the two parts of the frame are not in contact when folded. The hinge consists of a link 8, pivoted at 7 to fixing plates 5 on the two parts of the folding frame. The edges of the link are bent back so that the corners 8e form stops which engage the edges of the plates 5 to keep the two parts of the frame apart in the folded position, as shown. The corners 8d of the other edge of the link engage the edges of the plates 5 when the frame is opened out.