baber/WOPTO huggingface dataset:
Patent GB-318354-A (GB)
Title: Improvements in or relating to folding chairs
IPC: A47C4/30
Filed: 1928-07-25
Abstract: 318,354. Wells, E. G. July 25, 1928. Folding seats; seat bottoms and backs. -In a folding seat of the type consisting of pivoted X- frames 10, 11 with the frame 15 of the seat proper pivoted at its :front end to the frame 11, its rear end having projecting pins engaging slots 20 in the frame 10 and in which the seating surface is constituted by a strip of fabric 23 stretched upon the seat frame 15, the back rest consists of a strip of fabric 24 stretched between a cross bar at the top of the frame 10 and a rear cross bar of the seat frame 15. The seating surface and the back rest may consist of one length of fabric which is threaded round and between a pair of parallel bars at the rear of the seat frame 15. The fabric seat and back may be supported by bands 28 secured to the frames. The pins 19 engaging the slots 20 pass through the seat frame 15 and are each formed with an attaching flange 21.
Patent GB-706183-A (GB)
Title: Improvements in or relating to ceramic to metal seals
Inventor: SHOOBERT GEORGE WILLIAM
IPC: C04B37/02
Filed: 1950-09-01
Abstract: 706,183. Ceramic metal seals. K. L. G. SPARKING PLUGS, Ltd. Nov. 29, 1951 [Sept., 1, 1950]. No. 21668/50. Drawings to Specification. Class 36 A hermetic seal between a ceramic body and a metal part having similar coefficients of expansion is made by glazing the ceramic body, oxidizing the surface of the metal, at least in the region which is to be sealed, .heating the ceramic body to fuse the glaze, at least in the sealing region, heating the metal part and forcing the oxidized metal surface into contact with the fused glaze. On cooling, a chemical bond is formed between the metal oxide and the glaze to form the seal. The glaze, which may be a transparent leadless fritted glaze, may be vitrified before or during the formation of the seal. The ceramic body may be made from a high alumina ceramic and the metal part may be a nickel-iron alloy.
Patent GB-709290-A (GB)
Title: Improvements in or relating to rotary electric switches
Inventor: WHITTLE IVOR WILFRED
IPC: H01H1/58
Filed: 1951-09-17
Abstract: 709,290. Contact members for switches. SANTON, Ltd. Dec. 16, 1952 [Sept. 17, 1951], No. 21735/51. Class 38(5) A moving contact assembly for a rotary switch comprises one or more contacts 7 having a lug 8 at its inner end which receives a loop 6 of stranded wire to which the contacts are soldered or brazed. The contacts 7 and loop 6 are loosely retained in recesses 11 formed in opposed faces of a pair of insulating housings 10 clamped together on the switch spindle 14, the arrangement permitting selfalignment of the contacts. The housings have an interfitting extension 12 and annular recess 13, and between the housings 10 arcuate arc shields 18 are secured by pins 19. A number of such assemblies may be built up on the spindle 14.
Patent GB-677139-A (GB)
Title: Improvements in or relating to electric air heating units
IPC: F24H3/04
Filed: 1949-08-22
Abstract: 677,139. Centrifugal fans.' GENERAL ELECTRIC CO., Ltd., OSBORNE, W. C., and RYCROFT, J. L. Aug. 16, 1950 [Aug. 22, 1949], No. 21761/49. Class 110(i) [Also in Groups X and XI] A centrifugal fan for an electric air heater (see Group XI) has a rotor 12 of cast metal and of dished form, upstanding impeller blades 12d being provided on the outer surface of the dish. The fan is driven by an electric motor 11 and is arranged with its axis vertical in a casing having an upper air inlet extending right' round the casing and comprising louvres 35, the fan drawing air in over heating elements 30 and ejecting it downwardly and outwardly across the floor of the room through an air outlet at the bottom of the casing similar in form to the air inlet and comprising louvres 25.
Patent GB-729878-A (GB)
Title: Magnifying reflection viewer for stereoscopic pictures
IPC: G02B27/22
Filed: 1953-08-06
Abstract: 729,878. Stereoscopes. COPELAND, J. C. Aug. 6, 1953 [Aug. 7, 1952], No. 21770/53. Class 97 (1). The two images of a stereoscopic transparency are viewed in concave mirrors, inclined semi-reflecting mirrors being used to permit the use of beams in the direction of the concave mirror axes. In the form shown in Fig. 4 a stereoscopic transparency 33, seen in transverse cross-section, is illuminated by daylight, or light from a tubular lamp 52 diffused by opal glass 67, the transmitted light being reflected by a semi-reflecting mirror 31 on to two concave mirrors 30, one for each image, which reflect the light through a viewing aperture 11. The distance between the mirrors is adjustable. This viewer is used with stereoscopic transparencies with the two views transposed and spaced at the interocular distance. The viewer of Fig. 9 may be used when the photographs have been taken in a camera using pairs of parallel inclined mirrors to secure juxtaposed images. The viewer does not need the images to be transposed. The transparency 88 is illuminated by the lamp 103 with diffuser 104. The transmitted light passes through semireflecting mirrors 107, 108, is reflected by concave mirrors 109, 110, then by the mirrors 107, 108, then by opaque mirrors 111, 112 for viewing at the apertures 113, 114. A septum 115 separates the two beams. The concave mirrors, mounted back to back, may replace the septum. In other arrangements using the same reflectors the light from the transparency may be reflected first from the opaque mirrors and then be transmitted or reflected on to the concave mirrors. A viewer formed of two identical systems, each similar to half of Fig. 9, but not in symmetrical relationship, may be used for viewing, without transposition, transparencies obtained in spaced relationship in a normal stereoscopic camera.
Patent GB-225912-A (GB)
Title: Improvements in processes of mineralizing fibrous materials, particularly sawdust, and in fibre and cement bodies or compositions
IPC: C04B18/28
Filed: 1923-08-30
Abstract: 225,912. Garrow, J. R., Case, G. O., and Novocretes, Ltd. Aug. 30, 1923. Reinforced concrete. - Fibres, such as saw dust, wood pulp, coir and cork, or wooden laths &c., are impregnated with a basic solution of a metallic salt, and a mineral compound is precipitated from the solution in and on the fibres. An example is an iron salt, such as ferric chloride rendered basic by the addition of an alkali or alkaline earth hydrate or salt, the amount addded being such that a slight excess would produce a permanent precipitate. Suitable proportions are one pound of iron perchloride in 10 lbs. of water, and about 2 oz. of caustic soda. The fibres are impregnated with the solution and a precipitate is formed by the addition of an alkali, or by heat, or merely by keeping the fibre in the atmosphere. The mineralized fibre is employed as a filler for cements, particularly those containing alkalies or lime, in which case further reaction takes nlace. With aluminous cements, as ciment fondu, it is preferable to add lime &c. to obtain reaction after the concrete has been mixed. Reference has been directed by the Comptroller to Specification 220,677.
Patent GB-463036-A (GB)
Title: Improved manufacture of alkyl phenols and related compounds
IPC: C07D311/82
Filed: 1935-08-02
Abstract: Alkylphenols, hydroxyarylmethanes and xanthenes are obtained when phenol-formaldehyde condensation products are subjected to destructive distillation or pyrolysis, if desired in presence of a surface catalyst such as fuller's earth.  Before the pyrolysis, a preliminary distillation may be effected, preferably under vacuum, to remove unchanged phenols and separate the hydroxyarylmethanes.  The alkylphenols and xanthenes are produced by the pyrolysis treatment which is effected at normal pressure. The starting materials may be prepared from monohydroxyphenols such as phenol, cresols and xylenols, or from polyhydroxyphenols, which are condensed with formaldehyde in varied proportions and in presence of basic or acidic catalysts.  According to the examples: (1) equimolecular parts of m-cresol and formaldehyde are condensed in the presence of formic acid and subjected first to vacuum distillation under 17 mm. of mercury and then to pyrolytic distillation at about 450 DEG  C. under normal pressure; the vacuum distillate consisted of unchanged m-cresol and at least three isomers of dihydroxyditolylmethane; the acidic portion of the pyrolytic distillate contained m-cresol, o-4-xylenol, p-xylenol and pseudo-cumenol, whilst from the neutral portion 3 : 6-dimethylxanthene was isolated; (2) a resin prepared by condensing 4 mols. of m-5-xylenol with 6 mols. formaldehyde in presence of hydrochloric acid was treated as in (1); the vacuum distillate contained three isomers of dihydroxydixylylmethane, the acidic portion of the pyrolytic distillate yielded iso-pseudo-cumenol and durenol, and the neutral portion of the pyrolytic distillate a tetramethylxanthene; (3) various phenols, including o-4-xylenol and p-xylenol, were obtained by the pyrolysis at 450 DEG  C. of a m-cresol-formaldehyde resin prepared p  under ammoniacal conditions; (4) a resin prepared from equimolecular amounts of o-cresol and formaldehyde in the presence of hydrochloric acid yielded on vacuum distillation at 24 mm. two isomers of dihydroxyditolylmethane and on further pyrolytic treatment at 450 DEG  C. an oily distillate, the acidic portion of which contained mesitol.  It is also stated that a phenol-formaldehyde condensation product yields o- and p-cresols, as well as 4 : 4<1>- and 2 : 4<1>-dihydroxydiphenylmethanes, and that a p-cresol-formaldehyde condensation product gives rise to 2 : 7-dimethylxanthene and 2 : 2<1>-dihydroxy-5 : 5<1>-dimethyldiphenylmethane.  The residue remaining after pyrolysis may be extracted with solvents such as nitrobenzene and cumene.
Patent GB-321165-A (GB)
Title: Improvements in metallic boxes or cases such as used for the mounting of electric switches or other electrical accessories
IPC: H02G3/16
Filed: 1928-07-30
Abstract: 321,165. Simplex Conduits, Ltd., and McLoughlin, H. F. July 30, 1928. Bases, cases, and covers for couplings.- A box for mounting a switch, fuse, coupling &c. comprises a channel member a forming the bottom and two sides, and two end plates b, b<1> that may he bent up from the same blank as the member a or formed separately, e.g. by casting, the parts being secured together by corner pieces c hooked into slots in one of the members, and carrying screws e that pass through and secure the other member. The corner pieces care U-shaped the ends of the arms being formed as hooks c<1>, c<2>. A switch plate g or cover may be connected to the pieces c by screws i that may engage in adjusting screws h. The plate g has openings m through which the switch can be passed to be secured tc the plate by means of extended brackets j.
Patent GB-689899-A (GB)
Title: Toggle press
IPC: F16H21/22
Filed: 1949-08-24
Abstract: 689,899. Linkwork. MAY, 0. Aug. 24, 1949, No. 22071/49. [A Specification was laid open to inspection under Sect, 91 of the Acts, Feb. 25, 1950.] Class 80 (iii). A mechanism for operating the ram z of a press from a reversible screw-and-nut drive m, comprises toggle arms a, b and links g, q. The link g is maintained approximately tangential to the arcuate path of the joint f by means of a further link i connecting the common pivot pin h of links g and q to a fixed pinjoint k. The linkwork may be duplicated to operate the ram (or two rams) from the single block m. In a modification the link g is pivoted to the link i at a point on the link i intermediate of its end pins. In a further modification the link i is omitted and the pin h engages a fixed curved guide, which may be non- circular. In an alternative form of driving means, the link q is pivoted to a crosshead reciprocated by a piston rod. In the toggle press shown in Fig. 8, the connecting rod 5 acts in tension to move the tool-carrying slide 11 down towards a platen 33. The toggle crank 3 is pivoted at 7 to the connecting rod and to a link 23 pin-connected to a rigid triangular link 17. The link 17 is pivoted at 15 to the press frame and is operated by a link 25 pivoted to the driving block 29.
Patent GB-1399473-A (GB)
Title: Contacting liquids and solids in countercurrent
IPC: B01D11/02
Filed: 1972-05-11
Abstract: 1399473 Solid/liquid contact; ion-exchange NATIONAL INSTITUTE FOR METALLURGY 11 May 1972 [14 May 1971] 22078/ 72 Headings B1F and B1J A process similar to that disclosed in 1070251 modified to ensure the trays remain flooded with solids comprises contacting solids and liquids in general counter-current in a series of stages between which liquids and solids can flow in both directions, the solids being introduced into a first stage and flowing from the first stage to a last stage and out of the last stage, the liquid flowing generally from the last stage to the first stage and out of the first stage, and the rate of liquid flow being cyclically varied so that during a first part of each cycle the solids are allowed to settle in the liquid phase, in a second part are caused to pass with the liquid from one stage to the next in the direction towards the last stage, while in a third part of the cycle liquid is caused to flow from the last stage towards the first stage while fluidising the solids in its path, the arrangment being such that the volume of solids that is caused to pass out of the last stage is less than the volume of solids that can flow between any pair of stages during the second part of a cycle. Thus in the embodiment of Fig 1, domes 8 of the last tray 6 of an ion exchange column are larger than the domes of the proceeding trays so that the amount of solids that passes through chimneys 7 in the last tray is less than can pass through the chimneys 7 of the proceeding trays.
Patent GB-459954-A (GB)
Title: Improvements in or relating to mops
IPC: A47L13/255
Filed: 1935-08-07
Abstract: 459,954. Mops. WEHRMANN, P., 9, Flandersbacherstrasse, Wulfrath, and HARDT, H., 12, Kaiserstrasse, Mettmann, both in Rhineland, Germany. Aug. 7, 1935, No. 22288. [Class 19] Fringe mop material is gripped without auxiliary securing means on the groove or grooves of a mop head formed in one piece solely by the elasticity of the mop material. The mop head is preferably semicircular in section with one or more grooves 2, Fig. 7. The material is passed round a cord like insertion 5, Fig. 16, and secured by linen 6. To save wool 3, Fig. 17, the cord 7 is placed above it. In a further modification, Fig. 18, a band 8 of resilient material is made to grip the wool fringes 3. In another modification, Fig. 9, a woven pad 9 has reinforced edges 4. The holding body or stock, Fig. 14, may be made entirely of rubber or other flexible material or the stock may be partly covered with resilient material 11, Fig. 8. Reference has been directed by the Comptroller to Specification 252,156, [Class 19].
Patent GB-358620-A (GB)
Title: Improvements in or relating to signalling and control apparatus for road traffic
IPC: G08G1/09
Filed: 1930-07-24
Abstract: 358,620. Road barriers. MURRAY, W., 254, Oldham Road, Ashton-under-Lyne, Manchester. July 24, 1930, No. 22291. [Class 20 (i).] In a modified actuation of the reversible spiked plate described in Specification 313,371, [Class 118 (ii), Signals], a ball h on reaching the top of the tube f, up which it has been driven by the impact of the vehicle wheels upon a tread d operating a linkage b, i, k, actuates a pawl u to release a drum u<1> which rotates for half a revolution under the influence of a weight u<2> to reverse the spiked plate, and completes its rotation to return to normal when the pawl u is again tripped on the return of the ball h. Specification 322,913, [Class 118 (ii), Signals], also is referred to.
Patent GB-595172-A (GB)
Title: Improvements in or relating to load holding devices for use with hoists
IPC: B66C1/44
Filed: 1945-08-29
Abstract: 595,172. Lifting-dogs. WELDING INDUSTRIES, Ltd., and ORCHARD, R. H. Aug. 29, 1945, No. 22295. [Class 78(iv)] A load-holding device for articles such as a row of bricks 17 comprises bars 1, 9 having article engaging members 4, 10, respectively, the former of which is connected at its end by a pivot 6 to a lug 11 on the bar 9 between its ends. The lug 11 fits between a pair of plates 2 which are welded to the end of the bar 1. The device is lifted by a shackle passed through an aperture 14, Fig. 6, or by a bifurcated hook which engages bosses 12, Fig. 1, on each side of the bar. When a bifurcated hook is used, an upstanding tongue 13 is provided above the bosses. The bars may be locked automatically in the open position by the engagement of a hook 15 with a swinging stirrup 16.
Patent GB-843139-A (GB)
Title: Thermosetting compositions, shaped articles and method of making same
IPC: C08F283/00
Filed: 1957-07-15
Abstract: A resinous product capable of being thermoset is made by subjecting to addition polymerization conditions a mixture of monomers consisting of 94 to 99% by weight of methyl methacrylate and 1 to 6% by weight of acrylic or methacrylic acid with an alkoxymethyl aminoplast resin-forming condensate in which the alkoxymethyl group contains 2 to 9 carbon atoms, the amount of condensate being from 1,2 to 10,5% by weight of the unsaturated monomers, and from 0,1 to 2% by weight of the unsaturated monomers of a polymerization initiator, e.g. benzoyl, acetyl and caproyl peroxides, t-butyl perbenzoate and hydroperoxide, and specified azo catalysts.  Aminoplast resin forming condensates specified are those of formaldehyde with urea, dicyandiamide, formoguanamine, benzoguanamine, melamine and its derivatives and other specified triazine derivatives, which have been alkylated with alcohols such as methyl, ethyl butyl, 2-ethylbutyl, 2-ethylexyl and benzyl alcohols.  Also present in the polymerizable mixture may be plasticizers such as tricresyl phosphate, t-butyl benzyl phthalate or an ethylene glycol adipate polyester. Polymerization is generally carried out at temperatures of 45 DEG  to 130 DEG C. which is followed by a short period of heating at 135 DEG to 225 DEG C. when the copolymer reacts with the aminoplast to produce a thermoset composition.  Specifications 450,305, 455,478 and 466,816 are referred to.
Patent GB-479874-A (GB)
Title: Improvements in apparatus for regulating the frequency of an oscillatory system
IPC: H03J7/04
Filed: 1936-08-14
Abstract: 479,874. Automatic control systems. SGHOTEL. G. Aug. 14, 1936, No. 22400. [Class 38 (iv)] [Also in Group XL] Oscillation frequency of a system or circuit is regulated within small limits by means of a valve or discharge tube acting as a variable leak across part of the oscillatory circuit, the leakage path being made substantially series resonant at the mean operating frequency. The Figure shows a circuit for automatic regulation of the frequency of an oscillator 11. The oscillator is coupled inductively at 3 to the plate-filament path of the leakage valve 4. Both the oscillator 11 and a small stabilized oscillator 12 are loosely coupled to a circuit including a rectifier 16 a smoothing circuit 17, 18 and a resistance 19, and the voltage across the resistance 19 is applied to the grid of the valve 4. Upon a variation of the frequency of the oscillator 11, the grid voltage is changed, and the frequency restored. Coupling between the oscillators 11, 12 may be avoided by arranging the coils 14, 15 in opposite diagonals of a bridge. The separate source 12 maybe replaced by a resonant circuit slightly out of tune with the oscillator 11 so that the voltages induced in the circuit by the oscillator vary considerably with changes of frequency. These voltages are rectified and applied to the grid of the 'leakage tube 4. Two resonant circuits out of tune in opposite senses may be employed.
Patent GB-244537-A (GB)
Title: Method of making flooring
IPC: E04B5/10
Filed: 1924-09-23
Abstract: 244,537. Hultin, V. K. Sept. 23, 1924. Flooring and ceiling blocks. - Flooring blocks 1 have recesses 5 adapted to be engaged by iron girders and the transverse edges are formed with recesses 4, the recesses 4, 5 being adapted to receive a binding liquid when the floor is erected. Grooves 6 are provided in the blocks to enable the binding liquid to penetrate into the spaces below the girders. Channels may also be provided in the lower parts of the transverse faces of the blocks.
Patent GB-937035-A (GB)
Title: Improvements in hitch connections between tractive vehicles or tractors and devices trailed thereby
IPC: B60D1/02
Filed: 1958-07-12
Abstract: 937,035. Tractor/trailer hitches. O. HOUSE, J. HOUSE, and L. E. LAMUDE. Oct. 12, 1959 [July 12, 1958], No. 22406/58. Class 103(5). A tractor/trailer hitch comprises an upper part 1 pivoted at 3 to the tractor and having an arm 4 movable over but fixable in relation to a sector 5, and a lower part 2 pivoted to the upper part 1 at 6 and mounting on coupling pin 12 and pointed angle irons 10 having notches 10a engageable when the part 2 is lifted by hydraulic lift links 16 with a spring pressed slider 8. In operation, the part 2 is lifted by the links 16 to engage a hole 13 in and lift the trailer coupling 14. Further lift engages the pin 12 in a hole 1a in the part 1, and the notches 10a engage and catch with the slider 8 to lock the hitch in a coupled up position. The links 16 are then disconnected to permit the hitch to swing over the sector plate 5. The coupling may be released by pulling a chain 17 connected to a pivoted lever 15 engaged with notches in the slider 8 to withdraw the slider from the notches 10a.
Patent GB-700830-A (GB)
Title: Attachments for centre drilling
IPC: B23B49/04
Filed: 1951-09-26
Abstract: 700,830. Attachments for centre-drilling. BARRITT, J. R. Dec. 22, 1952 [Sept. 26, 1951], No. 22451/51. Class 83 (3) A centre-drilling attachment for lathes comprises a freely-rotatable member 14 having therein a conical hole 16 to receive the end of a rod to be centred, the member 14 encircling a centre drill 5 held in a holder 4, which may be supported and fed by the lathe tailstock, turret &c., and is movable endwise relatively to the holder 4 against the pressure of springs 29. The member 14 rotates in a bearing 11 in a block 9 which is so mounted in a casing 1 that the latter may slide over the block against the springs 29 when the member 14 is engaged and rotated by the rod, a further conical seating preferably being provided at the other end of the rod to effect the drive. At least two adjustable screws 24 in the casing 1 limit the depth of feed of the drill by co-operation with bosses 22 carried by the block 9. Oil seals 18, 21 are provided at the ends of the bearing 11 which receives oil through a nipple 28. Cutting oil or lubricant is fed to the drill through a passage 7 in the casing 1 and drains away through a passage 8.
Patent GB-725253-A (GB)
Title: Improvements in or relating to coffee-making machines
Inventor: GAGGIA GIOVANNI ACHILLE
IPC: A47J31/24
Filed: 1953-08-14
Abstract: 725,253. Coffee urns. BREVETTI GAGGIA SOC. R.L. Aug. 14, 1953, No. 22506/53. Addition to 718,965. Class 129. In a coffee urn as disclosed in the parent Specification the boiler is enlarged to contain two cylinders. In one embodiment, Fig. 1, these cylinders 17, have piston rods 15 passing through sealing glands 34 in the top of the boiler casing. In modification, Fig. 2, the cylinders 17<1> extend to the top of the casing, a double piston 20 is fitted and the sealing gland dispensed with. In a further modification, Fig. 3 (not shown), the boiler is vented to the atmosphere and a sealing gland is unnecessary.