baber/WOPTO huggingface dataset:
Patent GB-102872-A (GB)
Title: Exposure Meter.
Inventor: HARVEY GEORGE LYON
IPC: G01J1/42
Filed: 1916-05-03
Abstract: 102,872. Harvey, G. L. May 3, 1916. Exposure meters.-Relates to exposure meters of the type in which a movable chart card is used in conjunction with another member having suitable index marks and data for light conditions, exposure times, &c. A blank 10, Fig. 1, is notched at 11, 12, 13 and folded at 14, 15 so that the notches are in register. A narrow slit 17 is provided in the leaf 16, and a rectangular window 19 in the leaf 18. A narrow slit 22 is also provided in the leaf 18 between two printed series of indications of latitude or locality 40 - - 44, one for summer and one for winter. A number of slits 21 in the leaf 20 correspond to various types of subject to be photographed, and this series nf slits is surmounted by a set of printed stop numbers as shown. The slide, of which the opposite sides are shown in Figs. 2 and 6, has on one, side a series of indications 56 - - 61 representing the lighting conditions, such as " Bright " or " Cloudy," and on the other side a series of exposure times. Another and smaller slide A, Fig. 3, is also provided, having a slot 26 registering with the slot 17 when in position. and a set of particulars of the nature and speed of the plates used. A clip 27 is attached to the slide A and co-operates with the slit 22, one end 28 acting as a pointer to indicate the latitude of the plate at which the meter is used. The openings 19, 21 are covered with transparent material. When in use, the slide A is set in the proper position corresponding to the latitude and is rarely moved. The slide B is moved until the arrow corresponding to the lighting conditions 56 - - 61 is opposite the plate or film in use, 68 to 200, Fig. 3. The meter is then turned over, when the leaf 20 will be seen superposed on the back of the slide B, and will show the correct exposure for any stop and for any particular class of subject.
Patent GB-1372810-A (GB)
Title: Support assemblies for printed circuit cards
IPC: H05K7/14
Filed: 1973-02-08
Abstract: 1372810 Component assemblies ELCO CORP 8 Feb 1973 [8 Feb 1972] 6337/73 Heading H1R [Also in Division H2] A mounting 10 for printed circuit plates 16 comprising, e.g. transistors, diodes, resistors, capacitors, and the like has an edge receptacle 12 with interior contacts engaging edge contacts of the plate, which is mounted by force fitting its contact extensions in apertures of a supporting plate 14; the receptacle having integral end guides 15 at each end. A pair of metal, e.g. Al, channels 18, 23 each have projecting fingers 22 of the open ends and slidably receive insulating, e.g. nylon liners 20, 21; each with a widened outer end portion 26 with recesses 24 mating with fingers 22 on insertion. The inner ends of the channels have widened base portions 19 extending to integral orthogonal support arms 28 provided with straight fingers 30 and hooked fingers 32; with plural spaced holes 38, 39, 40. The liners have bosses 36 fitting holes 38 of the channels, and fingers 3 of the inner ends engage between the base of each channel and an end of receptacle 12. Mounting 10 has four rectangular holes 41, 42 at each end accommodating the respective fingers 30, 32. In assembly, channels 18, 23 are positioned so that the widened bases surround the ends of receptacle 12, fingers 32 are hooked into holes 42, and fingers 30 engage holes 41 so that arms 28 lie adjacently the surface of mounting 10. Liners 20, 21 are then inserted into the channels with fingers 40 entering between the ends of receptacle 12 and widened base portion 19, and are pressed downward and against the base of the channels until bosses 36 enter holes 38 and recesses 24 engage fingers 22 of the channels. Printed circuit plate 16 is then inserted into the grooves of the liners and pushed into receptacle 12; the liner mouths being widened to lead in; and the plate is held firmly by friction. The device is dissembled after removal of the card by disengaging boss 36 from hole 38 so that the liners can be removed and the channels disengaged. Plural cards may be arranged in parallel on similar mountings.
Patent GB-1093286-A (GB)
Title: Improvements in or relating to dosage unit forms for the administration of medicaments and diagnostic agents
Inventor: WAI KEE-NENG
IPC: B01J13/02
Filed: 1965-02-15
Abstract: A dosage unit form, for the oral administration of medicaments and diagnostic agents, which swells without breaking when in contact with gastric juice, to such a size as to be mechanically ruptured on passage through the pyloric sphincter, comprises one or both of (a) a substance or mixture evolving gas on contact with gastric juice, and (b) a substance exerting an osmotic pressure in aqueous solution; sealed hermetically in a polymeric semi-permeable film which is resistant to attack by, but permeable to, gastric juice.  Suitable such films are made of gelatine, partially or wholly hydrolised polyvinyl acetate, vinyl acetate-vinyl alcohol copolymers, ethers or esters of cellulose, or plant mucilages, or mixtures of such materials, which have been hardened to give them the required resistant but semi-permeable properties.  Such hardening may be effected by treatment with formaldehyde (which is preferably afterwards removed by washing with ethanol or inactivated with ammonia or salts thereof) or by treatment with tannic acid, glutaraldehyde or ethylene oxide. Suitable gas-evolving substances are sodium bicarbonate, alone or admixed with citric or tartaric acid; osmotic-pressure-producing substances may be water-soluble salts (e.g. sodium or potassium chloride), or sugars (e.g. sucrose, lactose, or mannitol).  Forms taken by the dosage units are sealed capsules, preferably not less than 20 mms. in length, and made of the said materials; and easily disintegrated compressed tablets enclosed in a continuous film of these materials.  Examples are given for capsules containing the said ingredients with, as a medicament, disodium glycyrrhetinic acid hemisuccinate (carbenoxolone sodium); and, as a diagnostic agent, barium sulphate; together with ethyl hydroxyethyl cellulose as a thickening agent.
Patent GB-702586-A (GB)
Title: Improvements in or relating to fruit-squeezing machine
IPC: A23N1/00
Filed: 1952-03-12
Abstract: 702,586. Dispensing liquids. TAMANI, J. March 12, 1952 [Oct. 5, 1951; Jan. 11, 1952], No. 6468/52. Class 116 [Also in Group VI] Each fruit 23 is squeezed between one of a battery of fluid and pedal operated pistons 72 and convex bottoms 19 removably set in containers 11 the juice passing through filters 12 into a glass placed under each funnel 12<SP>1</SP>, all being mounted on a stand constituting a serving bar containing in its base the fluid pressure operated system and control pedal 16 to depress the pistons which when exhausted of pressure are raised up by springs 9. The convex bottom 19 has radial grooves underneath to allow the juice to run through with projections to trap the solid matter which can be removed when the bottom 19 is lifted out. The pedal 16 operating a pump 15 delivers pressure oil through pipes 17 and 18 to the top of the pistons, the oil exhausting back through a valve 20 to an cil supply container 13 supplying oil through pipe 14 to the pump. Leakage of oil on to the fruit is prevented by the skirt 7<SP>4</SP> of the piston. The machine may be operated by compressed air instead of oil. Figs. 8 and 9 (not shown), show another form of pumping system to supply pressure oil through a pipe to operate the fruit squeezing pistons. Depression of pedals 40, 41, Fig. 13 (not shown), raise pistons to suck oil beneath them. On release of the pedals such oil is held in by spring-pressed balls. Then either or both pedals are depressed again allowing the pump to be charged with oil. A third pedal 44 (not shown) presses the caps.
Patent GB-743772-A (GB)
Title: Improvements in or relating to heat exchangers particularly for dairy farm apparatus
IPC: A01J9/04
Filed: 1951-03-19
Abstract: The subject-matter of this Specification is identical with that described in Specification 743,840, but the claims differ.
Patent GB-910940-A (GB)
Title: Improvements in or relating to switching arrangements for multi-channel pulse-communication systems
IPC: H04Q11/04
Filed: 1959-02-25
Abstract: 910,940. Automatic - exchange systems. TELEFONAKTIEBOLAGET L.M. ERICSSON. Feb. 25, 1959 [Feb. 25, 1958], No. 6582/59. Class 40 (4). In a system of the " resonant transfer " type the subscribers' storage devices are connected to their respective multiplex highways via current controlled switches, rendered conducting in the first instance by a brief pulse and being eventually rendered non-conducting by the current through them falling below a prescribed small value. As shown, each subscriber A is provided with a low-pass filter LP1 and a tuned circuit 13, 15 of period equal to twice the pulse duration, which circuit is connected to the common lead F1 by an NPNP type non-linear resistance which has a low resistance for high currents but high resistance for low currents. Subscriber B is connected similarly to common lead F2. Each common lead such as F1 is provided with a highimpedance source 36 consisting of an A.C. source feeding a pair of transistors 33, 34 in push-pull, which provides the lead with a positive-going half-sinusoid coincident with each channel period. To connect subscribers A and B a channel pulse period is allotted to the connection, and the primary windings 16, 29 and the transistor gate 24 between leads F1 and F2 are pulsed cyclically during these periods, the windings 16, 29 being provided only with a sharp pulse at the beginning of the period. The voltage induced in windings 15, 28 in combination with the half-sinusoid voltages applied to leads F1, F2 increases the current through the NPNP switches 17, 27 to reduce them to the low impedance state, so that the condensers 13 and 26 are connected to lines F1 and F2 which themselves are interconnected by the gate 24. Interchange of charge on the condensers 13, 26 thus takes place to effect communication between the subscribers. When the half-sinusoid current falls below a prescribed value the switches 17, 27 become non-conducting and energy transfer between the condensers ceases. Transistors 41, 42 are arranged to discharge the common leads F1, F2 between channel pulses. In an alternative arrangement, Fig. 1 (not shown), the half-sinusoid sources are dispensed with, and the lower portions of the filters LP1, LP2 are connected to opposite polarities and the directions of the switches connected to one of the common leads is reversed. The switching- off of the switches is then wholly controlled by the transfer current between the subscribers' storage condensers. Reference is also made to audio-frequency digit receivers being connected up by these means and to the possibility of an intermediate audio link between the common leads F1, F2. The NPNP switches may be replaced by other bi-stable elements such as avalanche transistors. Specification 737,417 is referred to.
Patent GB-286604-A (GB)
Title: Improvements in cycle stands
IPC: B62H3/00
Filed: 1928-03-02
Abstract: 286,604. Wagner, I., and Neher, C. A., (trading as Wagner & Neher, Maschinenfabrik Eisenbau). March 5, 1927, [Convention date]. Stands.-A cycle stand comprises a stationary channelled wheel rest 8, Fig. 2, and a movable channelled wheel rest 5 on an arm 3, which is adapted to rock about a pivot 2 and carry the cycle wheel to a position in which the wheel, as shown in Fig. 4, abuts against the stationary rest 8, the arm 3 and rest 5 then acting as a strut to retain the wheel in position. A rack for supporting a number of cycles is provided with a series of rocking arms 3, 4, which are alternately long and short and carry segmental rests 5, 6, the stationary rests 8 being alternately at a higher and lower level, so that the cycles can be close together with clearance between the handlebars. In a modified form of rack, the stationary rests 8 are of segmental form and are disposed at the same level close to the ground in a zig-zag series to space them uniformly from their respective rocking arms, the longer arms being adapted, by rocking, to lift a cycle wheel so that the handle-bars clear the handle-bars of cycles supported by the adjacent shorter arms.
Patent GB-629315-A (GB)
Title: Improved apparatus for the decomposition of alkali metal amalgams
IPC: C25B1/42
Filed: 1947-03-10
Abstract: In a modification of the apparatus of Specification 605,339 for decomposing alkali metal amalgam, the bottom of the container of the cell constitutes the amalgamable surface on which the mercury flows in contact with the catalyst body which is pressed against the surface.  The catalyst body may consist of separate parts such as small bars, e.g. of graphite or other conducting non-amalgamable material, whose section is broader at the top than at the bottom, the upper faces being fixed to transverse bars on which rests a metallic sheath which is pressed down by a screw regulated by a screw nut fixed to the top of the apparatus.
Patent GB-294088-A (GB)
Title: Improvements in connection with wearing apparel
IPC: A41D3/06
Filed: 1928-03-03
Abstract: 294,088. Walsh, A. March 3, 1928. Overcoats; gaiters. - Detachable gaiters 2 are adjustably fixed to an overcoat 1 by means of straps 4 and a series of fastening elements 6. When not in use, the gaiters may be flattened out and passed through pockets 3, which are open top and bottom, the straps 4 being secured to fastenings 5, or the gaiters may be inverted and their lower ends passed upwards through the pockets, straps 7 at the lower ends of the gaiters then being secured to the fastenings 5.
Patent GB-903744-A (GB)
Title: Improvements relating to railway vehicle speed control apparatus
IPC: B61L17/00
Filed: 1959-02-26
Abstract: 903,744. Fluid pressure brakes. WESTING- HOUSE AIR BRAKE CO. Feb. 26, 1959 [Feb. 28, 1958], No. 6691/59. Class 103 (1). [Also in Group XXX] The pressure in brake cylinders 100, 101 of a railway vehicle retarder RIT, is controlled by supply valves 105, 106, 107 and exhaust valves 108, 109, the valves being electrically controlled in dependence on vehicle weight and speed. Valve 107 has half the flow capacity of valves 105, 106 but all are similar in construction; the valve 105 comprises a slide 123 raised against spring 127 by magnet IHM to connect supply passage 131, 130 to chamber 138 to move piston 113 and slide 115 to connect inlet passage 131 to pipe 136 and cylinders 100, 101. A spring 127 moves slide 123 to close passage 130 on de-energization of magnet IHM, the piston 113 being returned by spring 119 to close passage 136. Exhaust valve 108 has inlet 145 connected only to passage 130; actuation of magnet IXIM supplies compressed air to move piston 113 to the left to vent passage 146 and cylinders 100, 101. Valve 109 is controlled by a pilot valve 110 normally as shown, but on energization of magnet IX2M valve 159 is raised to supply air from pipe 133 to chamber 161 via passages 152, 153 to depress piston 162 and open valve 164 to connect cylinders 100, 101 to atmosphere via passage 104, valve 164 and port 166. The magnets IXIM, IX2M are energized simultaneously, valve 108 responding rapidly to produce a slow pressure decrease and valve 109, opening after valve 108, rapidly reduces the cylinder pressure. Specification 903,741 is referred to.
Patent GB-256879-A (GB)
Title: Improvements in or relating to arc lamps
IPC: H05B31/00
Filed: 1925-06-12
Abstract: 256,879. Steinberg, E. June 12, 1925. Arc lamps.-In a light-projector having arcelectrodes parallel to the optical axis, the optical system and the carrier of the electrodes are relatively adjustable to compensate for the consumption of the electrodes. In one arrangement the carrier,which may be adjusted by hand, slides in guides parallel to the axis of the lens system of the projector. In another projector, the carbons 2 are stationary and a reflector 13 is adjustable by means of a sliding stem 12 which is graduated in terms of time of burning. The arc may be struck as described in Specification 251,129.
Patent GB-288967-A (GB)
Title: Improvements in panorama exhibiting apparatus
IPC: G02B23/08
Filed: 1928-03-05
Abstract: 288,967. Goerz Optische Anstalt Akt.-Ges., C. P. April 16, 1927, [Convention date]. Periscopes. - The apparabus exhibits a panorama having no interruptions, the eyes of the observer being below the light apertures, and is specially applicable for use in armoured vehicles. A number of equi-distant optical systems each consists of a stationary part 3 and a part 8 adapted to rotate in a horizontal plane round the vertical centre line. The number and angles of the field of vision of the systems is such that the outside ground is represented withcut gaps upon the screen 11. The light admission systems 3 may be a multiple of the field of vision systems 8 so that in the event of injury to one of the former one of the latter may be moved into the path of one remaining. Three examples of optical systems are given, one comprising an objective, a prism and an erecting system, as shown, another comprising a pentagonal prism opposite an aperture and an objective on the moving part of the apparatus, and a third having a dispersive lens in the aperture, a pentagonal roof-edged prism situated within the housing and an objective on the moving part of the apparatus.
Patent GB-563700-A (GB)
Title: Improvements in or relating to ash trays
IPC: A24F19/00
Filed: 1943-05-03
Abstract: 563,700. Smokers' ash-trays. FOSTER, C. E. May 3, 1943, No. 6954. [Class 130] An ash-tray comprises an open vessel 1 and a plate-like member 3 sup. ported thereon to form a loose cover. The member 3 has a central aperture 5 and grooves 4 extending from the aperture to the outside edge, which is spaced from the walls of the vessel, so that a partly burnt cigarette laid in a groove can only fall within the vessel. As shown, the member 3 rests on a ledge 2 just beneath the rim of the vessel, which may be of square, triangular, clover-leaf or other shape in plan.
Patent GB-279313-A (GB)
Title: Improvements relating to the protection of wood and wooden structures against rot and decay
IPC: E02D5/60
Filed: 1927-03-12
Abstract: 279,313. Chamberlain, W. Y. March 12,1927. Waterproofing structures; facing walls; struts. -Wood piles, columns, braces, wales, joists, walls, floors, and wood members of jetties, quays, and other structures are protected from decay by applying a sheath of cement or concrete over nails driven into the timber and over a reinforcement formed by winding or interlacing a length or lengths of wire round the nails. Figs. 1 and 2 show the application of the protecting sheath to a pile 1, the cement 2 being applied over nails 5 and wire reinforcement 6.
Patent GB-930054-A (GB)
Title: Process for the production of 1, 2, 4-triethylbenzene
IPC: C07C5/25
Filed: 1962-02-23
Abstract: 1, 2, 4-triethylbenzene is obtained by isomerizing 1, 2, 4-trivinylcyclohexane by heating with an alkali metal.  The amount of alkali metal may be 1-20% by weight of the trivinylcyclohexane and a promoter is preferably added, e.g. naphthalene, fluorene, ochlorotoluene, aniline, ethylene diamine, triethylene diamine or potassium tertiary butylate, in amounts of 0,1-10% by weight of trivinylcyclohexane.  Preferably reaction is effected by heating to 160 DEG -240 DEG C. using sodium in o-chlorotoluene or aniline or potassium in tertiary butyl alcohol or by heating to 80 DEG -150 DEG C. with 5-20 parts by weight per part of trivinylcyclohexane of a 1-10% solution of lithium in ethylene diamine.  Specification 848,637 is referred to.
Patent GB-1508711-A (GB)
Title: Fabry-perot interference spectrometer
IPC: G01J3/26
Filed: 1976-02-23
Abstract: 1508711 Fabry-Perot spectrometers AGENCY OF INDUSTRIAL SCIENCE & TECHNOLOGY 23 Feb 1976 [24 Feb 1975]  07092/76 Heading G2J A Fabry-Perot interference spectrometer comprises an entrance slit 6 at the focus of a lens 3, a Fabry-Perot interferometer 4, an inclined reflector 5, and an exit slit 7 off axis with respect to the lens. In one mode of operation light from slit 6 is  callimated and passes through the interferometer 4 which has a plurality of pass bands separated by the free spectral range (dependent on the spacing of the plates). Reflected light from the mirror 5 repasses through the interferometer, but the oblique angle increases the effective separation of the plates, thereby causing the location and free spectral range of the pass bands to be different from the previous passage. In combination the two passes through the interferometer produce a transmission characteristic having wide spectral separation of the bands (large free spectral range). In another mode the light enters slit 7 and leaves on the interferometer axis, the predispersed reflected spectrum of the first pass being observable at a third slit (8), Fig. 5 (not shown). In a simplified apparatus Fig. 6 (not shown), the first plate of the interferometer also forms the lens and the second plate also forms the mirror.
Patent GB-988006-A (GB)
Title: Improvements in and relating to the production of oxygen-containing-organic compounds
Inventor: DUNCANSON LEONARD ANDREW
IPC: C07C51/31
Filed: 1962-02-23
Abstract: Carboxylic acids and either alcohols or ketones or both are prepared by contacting a liquid mixture containing a saturated or unsaturated aldehyde having two to four carbon atoms and a paraffin (including cycloparaffins and alkyl-substituted cycloparaffins) having three to fifteen carbon atoms with a molecular-oxygen-containing gas at 30 DEG to 200 DEG  C.  The process can be performed at atmospheric or elevated especially up to 50 ats., pressure in the presence or absence of a diluent, e.g. ketones, esters and carboxylic acids or mixtures thereof.  It is desirable to employ salts, preferably bromides, chlorides or organic acid salts, of one or more metals of variable valency, which salts are soluble in the reaction mixture under the reaction conditions, as initiators.  The choice of initiator is dependent upon the product distribution required since different initiators lead to different distributions.  Other initiators that can be used are ultra-violet light, hydrogen peroxide, ozone and certain specified peroxy compounds.  The process can be performed batchwise, semi-continuously or continuously and in a preferred method of working the off-gas together with make-up oxygen or air is recycled to the reaction zone such that the oxygen content of the off-gas is kept just below 10 vol. per cent.  Several examples are given.
Patent GB-1061512-A (GB)
Title: Improvements in or relating to chain driving means
Inventor: PLASTOW RONALD JAMES
IPC: F16H7/06
Filed: 1965-02-19
Abstract: 1,061,512. Chain gearing. TECQUIPMENT Ltd. Jan. 31. 1966 [Feb. 19. 1965], No. 7185/65. Heading F2Q. A tensioning device for a chain which passes around a driving or driven sprocket 2 on a shaft 1 whose position may be varied comprises a forked member 3 rotatably mounted on shaft 1 and pivotally connected to pivoted arms 8, 9 carrying tensioning sprockets 16, 17 at their mid-lengths. The forked member 3 has a screw-threaded stem 4 on which is mounted a member 5 having transverse trunnions, parallel to the axis of shaft 1. The adjacent ends of the arms 8, 9 are pivoted on the trunnions, the other end of arm 9 being mounted on a fixed pivot 13 and the other end of arm 8 being pivotally connected to a pivoted arm 10.