baber/WOPTO huggingface dataset:
Patent GB-1191097-A (GB)
Title: Photoconductive Compositions
Inventor: SEUS EDWARD JOSEPH
IPC: G03G5/06
Filed: 1969-02-27
Abstract: 1,191,097. Photo-conductive layer. EASTMAN KODAK CO. 27 Feb., 1969 [28 Feb., 1968], No. 10491/69. Addition to 1,153,506. Heading H1K. The light sensitivity of a photo-conductive layer comprising a dye and a hydrophobic polymeric material in a two-phase heterogeneous state and having a wavelength of maximum absorption which is different from that of the dye and polymeric material in a homogeneous state, is increased by coating the photo-conductive layer with a dye solution and drying. The examples of the dye and polymer and supports for forming an electrophotographic element are the same as those in Specification 1,153,506. The dye for the overcoat may be the same as that in the photoconductive layer or different and the overcoat may include a polycarbonate. The solvent used for applying the dye overcoat should preferably cause swelling of the polymer in the photo-conductive layer. Up to 8 dye overcoats may be applied. It is stated that the absorption characteristics of the overcoat are different to that of the overcoating solution.
Patent GB-1253697-A (GB)
Title: Infrared transmissive glass elements
IPC: C03C3/12
Filed: 1969-02-27
Abstract: 1,253,697. Infra-red transmissive glass elements. MINNESOTA MINING MFG. CO. 27 Feb., 1969 [28 Feb., 1968], No. 10522/69. Heading C1M.  Infra-red transmissive, black glass elements of thickness not exceeding 2 mm. comprise a clear uncoloured base glass component of refractive index at least 1À6, and light filtering components dissolved in the base glass, the light filtering components comprising (in weight per cent):- these percentages being relative to the total glass composition, and the light filtering components constituting 1À2-20% by weight of the total composition. The base glass may consist of, again in weight per cent of the total glass composition :- The compatible metal oxides may be oxides of Zn, Cd, Ge or alkaline earth metals. The glass elements have a reflective intensity not more than 25 candlepower per foot candle per square foot and an integrated retroreflectance ratio of infra-red light (7600-11,000 ) to total light (4000-11,000 ) of at least 0À65. The elements may be in the form of beads, fibres or flakes and are particularly useful for marking objects for identification systems, the elements not being visible to the naked eye.
Patent GB-367617-A (GB)
Title: Improvements relating to the production of metallurgical coke in coke ovens and the like
IPC: C10B27/02
Filed: 1931-04-10
Abstract: 367,617. Coking processes. STILL, C., Recklinghausen, Westphalia, Germany. April 10, 1931, No. 10619. Convention date, April 10, 1930. Addition to 356,079. [Class 55 (i).] In a process of withdrawing distillates by suction from ducts in the interior of a coke oven charge, as described in the parent Specification, a metallurgical coke is obtained by charging a swelling or insufficiently shrinking coal loosely into the oven the walls m of which are maintained at temperatures which do not substantially exceed 850-900‹ C. Ducts e are formed in the charge a by insertion of rods f, and tubes c are introduced, the tops being .sealed by packing d in tubular chambers b leading by pipes h, i to a common main connected with an exhauster. A constant and approximately atmospheric pressure is maintained in the gas space o, while a vacuum of 100-800 mm. of water is produced in the ducts e.
Patent GB-610468-A (GB)
Title: Improvements in or relating to spacebands for use in typographical line casting machines
IPC: B41B11/00
Filed: 1946-04-06
Abstract: 610,468. Type-bar making machines. WHITTAKER, M. H. April 6, 1946, No. 10688 [Class 100(iii)) ] A spaceband comprises a member 6 in the form of a single wedge shaped leg having a closed slot 4, and a detachable shorter wedge shaped member 1 having a stud 2 engaging the slot 4. The stud 2 has an enlarged head 3 which engages a widened portion 5 of the slot 4, and the two members may be detached by sliding the member 1 until the enlarged head 3 engages an enlarged recess 7 and rotating the member 1 through 90 degrees.
Patent GB-128744-A (GB)
Title: Improvements in and relating to Wrenches.
Inventor: SCHWARTZ JACOB GEORGE
IPC: B25B13/46
Filed: 1918-06-28
Abstract: 128,744. Schwartz, J. G., and Schmidt, H. C. June 28, 1918. Wrenches.-A ratchet wrench of the kind having a circular head comprising a jaw-carrying member and a jaw-operating member rotatably connected together, the jaws being operated by screws carrying pinions engaging with a toothed flange on the jaw-operating member, comprises a tubular member 7 provided with a transverse partition 12 having grooves 14 in which slide the shanks 27 of slidable jaws 22, these jaws being further guided by beveled projections 23 on the jaws engaging similarly-shaped grooves 15 in the partition 12. The jaws are adjusted by screws 30 working through threaded holes, in the shanks 27 and carrying bevel pinions 31 engaging a bevel rack 20 formed on the internal flange of a tubular member 17 which is rotatably connected to the member 7 by a divided ring 18 engaging in a peripheral groove in the member 7. The inner ends of the screws 30 take a bearing in a tubular support 33 secured to the partition 12. The mem. ber 7 is provided with peripheral teeth 8 by which it can be turned in either direction by one of two pawls 39 pivoted to the handle 1 and held in operative position by springs 37. The handle 1 is provided with a strap portion 5 encircling the member 7 and adapted to engage frictionally with the adjacent face of the member 17, so that before the pawls 39 are engaged with the teeth 8 the member 17 may be turned by means of the handle 1 to adjust the jaws 22 to the nut to be turned. The adjacent faces of the strap 5 and member 17 may be roughened and the member 17 may have a milled edge so that it can be turned by hand.
Patent GB-579847-A (GB)
Title: An improved manufacture of lubricating greases and apparatus therefor
IPC: C11D13/02
Filed: 1942-07-31
Abstract: 579,847. Lubricating grease; soap manufacture. STANDARD OIL DEVELOPMENT CO. July 31, 1942, No. 10717. Convention date, Aug. 19, 1941. [Class 91] Lubricating grease is prepared by mixing fat or other saponifiable material with a saponifying agent, with or without a small amount of mineral oil, in a mixing vessel, removing relatively small portions of the mixture from the mixing vessel, heating the same outside the mixing vessel to effect at least partial saponification, recycling the heated material until the entire mixture is saponified, and then blending with mineral oil to form a grease. In the arrangement shown, the soap-forming materials are supplied to closed pressure vessels 1 which are truncated at the bottom and have pipes 5 leading from the middle portions to a pump 6 and coil heater 7 from which the mixture is returned to the bottom of the mixer by a pipe 8. The capacity of the pump is sufficient to circulate a volume of material equal to that of one of the vessels 1 in less than 3 minutes, and the temperature of the heater 7 is maintained preferably at 300‹ to 400‹ F. The finished soap stock is finally discharged through a pipe 10, cooler 11, and metering pump 13 to a high speed mixer or disperser 14 where it is mixed with oil of suitable viscosity supplied by the pipe 15, oil heater 16, and oil pump 18. The finished lubricating grease is discharged through a filter 20 and pressure control valve 21 to the outlet. A number of fatty materials and saponifying agents are specified. When mixed saponifying agents such as lime and soda are employed, the lime should preferably constitute at least 90 per cent. of the total base. For lime soap greases the water content should be from .05 to .15 per cent. of water for each per cent. of lime soap present; for soda soap grease the maximum water content should be about 1 per cent. Alkali metal soap may be converted into the corresponding aluminium soaps by treating with aluminium sulphate.
Patent GB-1201439-A (GB)
Title: Attachment apparatus for extruders
Inventor: LOOSER GOTTLIEB
IPC: B29C48/69
Filed: 1968-03-05
Abstract: 1,201,439. Filter attachment for extruders. G. LOOSER. 5 March, 1968 [9 March, 1967], No. 10755/68. Headings B5A and B5B. An attachment system for an extruder comprises a slide means provided with at least one bore into which a filter element can be placed, the slide means being displaceably mounted for placing the filter element in a working position, pressure compensating means comprising an axially adjustable spindle for varying the crosssectional area of the extrusion passage and optionally a rotatably mounted throat member supporting the extrusion die. The slidable filter holder permits fast replacement of a dirty filter without dismantling of the extruder assembly and the pressure compensating means maintains a constant pressure at the die despite variations in pressure drop across the filter. The rotatable die serves to distribute fluctuations in thickness over the whole circumference of an extruded film. As shown the filter 11 is mounted in slide member 7 which can be slid transversely out of the extrusion passage. The filter is clipped into the slide member 7 and is also held in position by perforated back plate 6. Loosening of threaded nut 12 permits sliding of the slide member 7. The extrusion passage is constricted at 17 by a spindle 16 axially movable along the bore of body member 13. Variations of pressure drop across the filter due to build-up of foreign material thereon can be compensated by movement of this spindle. The extrusion passage also comprises a rotatable die member 21 rotating on bearings 19 in housing 18 and driven by gear-wheel 22. With a suitable die member contained in the outlet of this rotating member, the apparatus can be used for extruding blown films.
Patent GB-623272-A (GB)
Title: Knife sharpener
IPC: B24D15/08
Filed: 1947-04-23
Abstract: 623,272. Knife sharpeners. WEBSTER, R. April 23, 1947, No. 10861. [Class 60] A knife sharpener comprises two sharpening elements 1, 2 held in a groove 3 formed between the mating faces of two base blocks 4, 5. The elements 1, 2 may be of hardened steel, or softer metal with hard inserts, and the base blocks 4, 5 are held together by screws 6.
Patent GB-527382-A (GB)
Title: Improvements in or relating to drying chambers for clothes
IPC: D06F58/12
Filed: 1939-04-11
Abstract: 527,382. Hot-closets. BRADFORD, W. L. April 11, 1939, No. 10902 [Class 34 (i)] A conveyer 14 carries clothes from an inlet at one end of the drying chamber to an outlet at the other end; both openings are closed by roller blinds 12, 13 or doors. Dry air is forced by a fan 2 through grids at the sides of the chamber, and escapes through vents 6. A driving wheel 10 for the conveyer may be provided with an external crank.
Patent GB-954157-A (GB)
Title: The treatment of synthetic fibres
Inventor: FURNESS VERA ISABELLA
IPC: D06M11/67
Filed: 1962-03-22
Abstract: In a modification of the process of the parent Specification, "never-dried" polyacrylonitrile fibres e.g. in the form of a tow of continuous filaments, are treated by application of an aqueous solution containing 1.5-5% by weight of a cyanoalkyl amide e.g. bis-cyanoethyl formamide, at a temperature of 75-90 DEG C., and are subsequently deformed e.g. crimped in a stuffer-box.
Patent GB-126621-A (GB)
Title: Improvements in or relating to Starting Mechanism for Engines Motor Cycles having Pinion Change Speed Gears.
Inventor: GARELLI ADALBERTO
IPC: F02N3/04
Filed: 1919-05-03
Abstract: 126,621. Garelli, A. May 6, 1918, [Convention date]. Turning-gear.-The toothed quadrant 3 of a kick starter for motor-cycles gears with a pinion 4 loosely mounted between the two pinions on the secondary shaft of a change-speed gear, the spindle of the quadrant 3 being parallel to the secondary shaft. The pinion 4 engages the gear pinion 6 by means of ratchet-clutch teeth 5, and the main shaft of the gear is connected to the engine by a sprocket drive, with or without a shock-absorbing resilient joint and a friction clutch. A loose pinion or quadrant may be inserted between the pinions 4, 6 for reversing the rotation of the starting pedal 1 with regard to the engine.
Patent GB-398450-A (GB)
Title: Improvements in or relating to grid pasting machines particularly for use in connection with storage battery plates
IPC: H01M4/20
Filed: 1932-08-03
Abstract: The Specification describes a machine which is identical with that described in Specification 398,328.  The claims relate to the device for wiping the surface of the grids after pasting.
Patent GB-590471-A (GB)
Title: High frequency electron discharge devices
IPC: H01J19/80
Filed: 1944-06-09
Abstract: 590,471. High-frequency discharge apparatus. STANDARD TELEPHONES & CABLES, Ltd. June 9, 1944, No. 11124. Convention date, Dec. 15, 1942. [Class 39 (i)] An electron discharge device for use at high frequencies comprises two parallel, preferably circular, metal plates 10, 12, Fig. 1, which are held in spaced relation by quartz insulators 14 and provided at their peripheries with annular electrodes 16, 20, and a glass envelope 30 -sealed to the plates and enclosing the electrodes, the plates and electrodes forming the walls of a hollow resonator. The metal ring 16 forms the anode and a grid 20 may be mounted on a similar ring 18. The cathode 22 is indirectly heated and is provided with an extension 26 which is coupled capacitatively to a disc 28. The plate 12 and disc 28 are provided with downwardly extending rims 36, 38 respectively which are slidably engaged by a toroidal cup 40, thus forming an external tunable grid-cathode resonator. The internal resonator may be tuned by a screw 46 which actuates a flexible diaphragm 42. Energy is extracted and communicated to a transmission line or wave guide 60 by a rod 48 passing through the plate 10, the rod being preferably adjustable to vary the coupling. For this purpose, the plate 10 is provided with a threaded bushing 50 supporting a threaded collar 52, which slides in an annular groove formed in the extension 53 of a flexible bellows 56. In a modification, Fig. 3 (not shown), the electrode surfaces are mounted parallel with the plates 10, 12, instead of at right angles thereto. The arrangement may be used as a diode, in which case the cathode 22 is dispensed with, one of the members 16, 18 serving as the cathode and the other as the anode.
Patent GB-761236-A (GB)
Title: Improvements in or relating to current regulating systems
IPC: H05B6/04
Filed: 1953-04-24
Abstract: 761,236. Automatic current control systems. SANGAMO WESTON, Ltd. April 24, 1953 [April 25, 1952], No. 11413/53. Class 38 (4). In a D.C. supply circuit in which the voltage across a constant load resistance is maintained constant, the load forming the cathode resistor of a cathode follower connected valve, feedback from the anode to the cathode compensates for changes in the valve amplification factor and feedback from anode to grid compensates for changes in supply voltage which affect both the anode voltage and the valve heater voltage. The triode 30 (one half of a double triode) is the cathode follower, and has its anode connected to the H.T. supply which is obtained from the other half valve 34 strapped as a diode to form the mains half-wave rectifier. The cathode load of valve 30 consists of a calibrating resistor Rs, the external load connected to the + ve and - ve terminals; an output current setting rheostat 39; a potentiometer 40; and a resistor 41. The voltage across this chain is compared with that of a gas-filled tube 35 in the grid circuit to control the valve. The anode-cathode feedback is via resistor 43 to the slider of the potentiometer 40, and the anode-grid feedback is via capacitor 23 and resistor 22 which have a time constant equal to the thermal time constant of the valve heater. The magnitude of the cathode current may be checked by comparing a reference source 31 with the voltage drop across the resistor Rs.
Patent GB-183246-A (GB)
Title: Improvements in or relating to crackers and the like
IPC: A63H37/00
Filed: 1921-04-20
Abstract: 183,246. Grigg, W. April 20, 1921. Bon-bon crackers. - A cracker comprises a light hollow ball made in two or more parts to which a snap or detonator is secured. The ball is comprised of fabric, pasteboard, or any light material, and may be made to represent a snowball or an egg. It is made in halves 1, 2, one of which fits on a shoulder on the other, and a snap 4 of usual construction is attached to the interior of the half by spots of gum 6. The ends of the snap project from the ball, and when they are pulled, the ball opens and the snap detonates. The snap may be attached to the ball in various ways, and one end may be secured to a paper serpentine which is coiled in the ball.
Patent GB-114811-A (GB)
IPC: B62D49/06
Abstract: 114,811. Alldays & Onions Pneumatic Engineering Co., Hilton, N. L., and Simms, C. E. May 5, 1917. Traction engines internal-combustion engine, are provided with a water or other ballast tank f mounted on cross-frame members b over the rear axle c .
Patent GB-483147-A (GB)
Title: An improved process and means for sterilising surgical dressings and instruments
IPC: A61L2/02
Filed: 1937-04-16
Abstract: 483,147. Sterilizing-apparatus; electric heating. SAVAGE, R. M., and MAW, SON, & SONS, Ltd. April 16, 1937, No. 11597/36. [Class 81 (i)] [Also in Group XI] Surgical dressings and other materials which contain, when air dry, some hygroscopic water, are sterilized by placing them in a closed vessel 1 between electrodes 4a in a high frequency electric circuit so that the dressings are heated and steam is generated therefrom by means of the oscillating electric field between the electrodes. The vessel 1 is formed of ceramic material, bakelized fabric, glass or the like and may be reinforced by rings of metal. End plates 2 are of metal Curved plates 4, external to the vessel 1, form extensions of the electrodes 4a and give uniformity of field in the container, and a field-free housing for the securing bolts 3 of the end plates. The circuit is tuned to resonance, as by means of a variable air condenser, and may be controlled automatically by a pressure switch within the container and operated by the pressure attained, and by a time switch ; or an external mercury switch, controlled by a Bourdon tube connected to a glass gas-filled bulb within the container, may be inserted in the supply from the electric mains. Treatment for 20 minutes at 115‹ C. is suitable. In modifications the pressure resisting end plates may constitute the electrodes and may be mounted on supports which form part of the resonant circuit. Articles such as rubber gloves or surgical instruments may be placed in the container with the dressings. Specification 23893 /00, [Class 81], is referred to.
Patent GB-989082-A (GB)
Title: Improvements in or relating to methods of manufacturing plates having funnel-shaped cavities or perforations formed by etching
IPC: C23F1/04
Filed: 1962-03-27
Abstract: A plate, e.g. a metal foil, is provided with at least one funnel-shaped (i.e. approximately frusto-conical) cavity or perforation by covering one side of the plate with an etching resist, e.g. a polyvinyl-butyral sensitized with a dichromate, providing, photographically or otherwise, an aperture in the resist and at least one slot surrounding the aperture and spaced therefrom by a strip of resist less wide than twice the thickness of the plate, connecting the foil as an anode and passing it through an electrolyte bath, e.g. a saturated solution of sodium chloride.  Separate cavities are provided by the etching, that below the aperture being deeper, and further etching undercuts said strip of resist to unite the cavities into a single cavity. The aperture may be surrounded by a plurality of slots each narrower than the adjoining one nearer the aperture. The other side of the plate is covered with a continuous resist layer.
Patent GB-1210527-A (GB)
Title: Surgical stapling instruments
IPC: A61B17/072
Filed: 1967-10-06
Abstract: 1,210,527. Stapling instrument. UNITED STATES SURGICAL CORP. 6 Oct., 1967 [10 Oct., 1966; 23 June, 1967], No. 11719/70. Divided out of 1,210,522. Heading B4C. [Also in Division A5] The subject matter of this Specification is substantially the same as that described in the parent Specification 1,210,522 but the claims are concerned with a surgical stapling instrument which includes a cartridge having a knife blade advanceable along the cartridge between two pairs of parallel rows of staple slots.
Patent GB-1119434-A (GB)
Title: Battery-operated pumping unit for gas analysis
IPC: G01N1/00
Filed: 1966-03-17
Abstract: 1,119,434. Valves. MINE SAFETY APPLIANCES CO. 17 March, 1966 [2 April, 1965], No. 11771/66. Heading F2V. [Also in Division G1] A valve comprises a body 42 having a chamber 41 therein with an inlet 40 and outlet 43, a valve stem 44 screwed into the body 42 and having an inner end for throttling the inlet 40, the stem being provided with a passage 46 having one end open to the atmosphere and its other end in communication with the chamber 41, and thus the outlet 43, by way of openings 47. A hollow inner stem 48 is screwed into the stem 44 and this has an inner end co-operating with a valve seat 49 for throttling the entry of air from the atmosphere via the passage 46. The valve is intended for use with gas analysis apparatus in which a battery-driven pump is connected to the outlet 43 to draw a restricted gas sample flow through an analyser connected to the inlet 40, and in which air is admitted via the hollow valve stems to the gas flow so that the pump is working with a full flow, thus preventing undue drain on the battery which would occur if the restricted flow through the analyser was the only gas flow through the pump. An alternative valve construction is also described in which the inner valve stem 48 is omitted and one opening 47 to the atmosphere is provided, this being partially obturated by a portion of the valve body, the opening being progressively uncovered as the valve stem is screwed down to throttle the inlet 40.