baber/WOPTO huggingface dataset:
Patent GB-604497-A (GB)
Title: Electric ovens
IPC: F24C15/32
Filed: 1945-12-18
Abstract: 604,497. Stoves. MAXSON CORPORATION, W. L. Dec. 18, 1945, Nos. 34281 and 34282. Convention dates, Jan. 22, and Sept. 18. [Class 126] An oven, more particularly for foodwarming, comprises a casing 13 closed by a door 16, a baffle 21 which is U-shaped in horizontal section and is spaced from the back and side walls of the casing, a fan 23 which receives air from within the baffle 21 through an opening 27 therein and passes it back to the space within the baffle by way of the passages between the baffle and the walls of the casing 13, heating means in the said passages, and brackets on the baffle 21 for supporting plates of food in superposed relation. The heating means may be electric elements 28 supported on the side walls of the baffle, and a wick 55 maintains the desired humidity in the oven. The plates 32 are preferably partitioned to provide separate compartments for the meat and each vegetable, and a shield plate 43 may be arranged over a part of each plate to protect the vegetable from excessive heating. The plates are held in position by spring clips 47.
Patent GB-467178-A (GB)
Title: Automatic telephone exchange switching systems
IPC: H01H67/12
Filed: 1935-12-11
Abstract: 467,178. Automatic exchange switches. AITKEN, W. Dec. 11, 1935, No. 34289. [Class 40 (iv)] A panel switch is designed so that the group sizes may be adjusted by moving the wipers on the wiper shaft. As shown the panel is built up from continuous strips having projections which are twisted through 90‹ to form the terminals and the wipers are arranged to bridge the spaces between the terminals and vertical bars. The wipers which are relatively displaced angularly and axially are adjustably secured to the shaft 15 by means of screws 33. In use, a particular set of wipers is first selected by delivering impulses to the rotary magnet 16 controlling a ratchet 27 keyed to the wiper shaft. Magnets 18 are then actuated to move the wiper shaft laterally against the springs 23, 24 so that the wipers (or, preferably, the test wiper only,) engage their terminals. In a modification, Figs. 4 and 5 (not shown) this lateral movement is imparted by a steel tape instead of by direct stepping of the carriages 21. The wiper shaft is then moved vertically by the magnet 17 and when an idle or wanted line is found the lateral movement of the wiper shaft is completed if necessary. In the case of numerical stepping by the magnet 17 any lateral movement may be deferred until the end of such movement. Upwardly and downwardly hunting switches may be arranged on opposite sides of the panel and may share some or all of the trunks. For example in a group of ten outlets, the first three trunks encountered by each type of switch may be individual and the remaining four, common.
Patent GB-190492-A (GB)
Title: Improvements in gear shifting mechanisms
IPC: F16H63/46
Filed: 1922-12-16
Abstract: 190,492. Stevens, W. C., and Taylor, H. J. Dec. 17, 1921, [Convention date]. Variable-speed gearing is controlled by a selective member 18, Figs. 1, 2, and 3, which is slid longitudinally between a pair of cams 3, 4, which are subsequently turned in unison to effect the change. The member 18 may be operated from a pointer 50, Fig. 16, upon the steering-wheel of a vehicle, through a linkage 45, 32. The shafts 8, 9 of the cams 3, 4 are coupled by link-work 38 and are operated from the main clutch pedal 40 through a lost-motion connection 42. The cams 3, 4 are adapted to coact with two rollers 5, 6, Figs. 1, 2, 3, and 10, which are carried bv a pair of arms 14, 15 loosely pivoted upon a fixed shaft and adapted to slide longitudinally thereon. Gear strikers 52 &c. are engaged by levers 1, 2, Fig. 3, depending from and loose upon the shaft 7. Each of the levers 1, 2 is connected to one of the roller carriers 14, 15 by a limb 13, 13<1>, Figs. 1 and 2, extending parallel to the shaft 7 and engaging notches 16 in the carriers 14, 15. The selective movement causes the rollers 5, 6 to slide along the cams 3, 4, which are shaped as shown in Figs. 2 and 10. There are four main cams S<1>, S<2>, S<3>, S<r> for effecting three speeds and reversed driving respectively, two on each of the group cams 3, 4. Opposite these are recesses C. There are also wide shallow cams N<1> - - N<4> for bringing to neutral. The cams 3, 4 to function are turned together from the clutch pedal. The Specification as open to inspection under Sect. 91 (3) (a) comprises a modified general arrangement of the parts above described. The gear strikers are adapted to be locked by an arm on one of the cams which, on release of the pedal, strikes between pairs of locking balls, thrusting them apart into locking engagement. A spring link to facilitate the shifting of the selective member is also described. This subjectmatter does not appear in the Specification as accepted.
Patent GB-939132-A (GB)
Title: Improvements in or relating to shears
IPC: A01G3/02
Filed: 1962-09-07
Abstract: 939,132. Hand shears. H. FREUND, W. FREUND, F. FREUND, and K. FREUND, [trading as H. FREUND [Firm of]]. Sept. 7, 1962 [Nov. 15, 1961], No. 34350/62. Class 30. [Also in Group XXIII] In shears, particularly hedge clippers, comprising non-metallic, preferably wooden, handles 8, 9 impaled on its arms 6, 7, each arm comprises an intermediate portion provided with annular enlargements 15 and terminates in a tang 16. The ends of the handles have ferrules 19, 20. The enlargements may be provided with teeth. Closing movement of the blades 1, 2 is limited by buffers 11, 12.
Patent GB-791633-A (GB)
Title: A process for the impregnation of leather to render it water-repellent
IPC: C07F9/02
Filed: 1955-12-01
Abstract: Organic metal complexes are obtained by reaction of a basic salt of a polyvalent metal with a derivative of an inorganic or organic acid having a basicity of at least three, which derivative contains a higher molecular weight aliphatic, cycloaliphatic, aliphatic-aromatic or aliphatic cycloaliphatic residue.  Specified inorganic acids whose derivatives may be used are boric acid, phosphoric acid and arsenic acid; specified organic acids are citric, trimeric, trimellitic, mellitic, diadipic, ethane-tetra-acetic, sulphophthalic, hydroxynaphthalic, pyrogallic and pyrogallol-carboxylic acids, and also condensation products of oleic acid, linseed oil fatty acid and soya oil fatty acid with maleic acid.  Specified derivatives are acid dodecyl phosphate, acid octadecenyl phosphate, hexadecyl borate, octadecenyl arsenate, acid hexadecyl citrate, acid dodecylsulphophthalate, mononaphthenylamide of citric acid, mono-octodecenylamide of citric acid, mono- or di-octyl, mono- or di-dodecyl, mono- or di-oleyl esters of orthophosphoric acid, monotetradecyl ester of phosphoric acid, mono-oleyl ester of citric acid and mixtures of acid esters obtained by action of phosphorus pentoxide on higher - molecularweight hydroxy compounds.  Specified basic salts of polyvalent metals are basic chromium chloride, basic aluminium chloride, basic aluminium nitrate, and basic titanium chloride.  Examples disclose reacting basic chromium chloride with the mono-tetradecyl ester of phosphoric acid or with a mixture of alkyl esters of phosphoric acid (alkyl residues C12-C18) in methanol; and reacting basic aluminium chloride with a mixture of alkyl esters of phosphoric acid (alkyl residues C12-C18) in methanol.
Patent GB-343134-A (GB)
Title: Improvements relating to electric fires
IPC: F24H3/00
Filed: 1929-11-12
Abstract: 343,134. Electric radiators. BELL & CO., Ltd., A. and BELL, N. M., Kingswell Works, Kingswell Street, Northampton. Nov. 12, 1929, No. 34450. [Class 39 (iii).] In an electric fire having a tile or like surround r, a cement or like box p formed or mounted on the back of the surround encloses the fire which is detachably mounted on members embedded in the box or surround, and a removable fret or trivet is provided underneath the fire aperture whereby access may be had to the securing means for the fire and the latter may be withdrawn or replaced. The heating elements e are secured to metal strips d interconnected by a bar o carrying a terminal block j. The upper ends of the strips d are arranged in front of a cross-bar c let into the box p, and the lower ends of the strips engage bolts secured to the surround and fitted with wing nuts w. The depth of the box p and the depth of the returned ends of the surround are sufficient to enable the fire to be fitted against a flat wall. The switch box k is arranged inside one of the returned ends. An asbestos or metal sheet covers the back of the fire. A ventilator a is arranged above the fire aperture. If desired the surround may be flat, recessed or splayed.
Patent GB-1299150-A (GB)
Title: Motor vehicle suspension systems
Inventor: EWERT BRUNO
IPC: B60G7/00
Filed: 1971-07-22
Abstract: 1299150 Motor vehicle suspensions GENERAL MOTORS CORP 22 July 1971 [13 Aug 1970] 34454/71 Heading B7D  A motor vehicle suspension comprises a cranked axle member 24 universally connected to a cross member 31 on the vehicle superstructure by a ball pin 32 engaging in a cylindrical cavity 33, a pair of control arms 27, 28 arranged to resist turning of the axle member 24 in the horizontal plane, a pair of rear wheel carriers 15, 16 hingedly connected to the respective ends of the axle member 24 by hinge pins 36 having axes which converge forwardly to a point of intersection disposed to the rear of the universal connection 32, 33, a pair of dampers 29, 30 pivotally connected to the wheels carriers 15, 16 and the superstructure so as to form telescopic guide struts and suspension springs 56, 57 arranged co-axially of the dampers 29, 30. The rear wheels 11, 12 are mounted on stub shafts 13,14 connected through drive shafts 17, 18 and constant-velocity joints to differential gearing 19 carried by a cross member 22 secured to the superstructure. In a front suspension, Fig. 5, the axle member comprises two arms 74, 75 interconnected about a vertical hinge axis by a joint 78 incorporating a ball and socket connection to a cross member  81. Front wheel spindles 95 steerably mounted on wheel carriers 70, 71 are connected to steering linkage 104. Turning of the axle member in the horizontal plane is resisted by oblique control arms 76, 77 which may be constituted by the arms of an anti-roll bar 83.
Patent GB-821913-A (GB)
Title: Process for preparing trichloroacetic acid
Inventor: SENNEWALD KURT
IPC: C07C51/363
Filed: 1957-11-05
Abstract: The invention comprises a process for the manufacture of trichloroacetic acid, by the chlorination of acetic acid, monochloracetic acid, dichloroacetic acid or mixtures thereof in the liquid state with gaseous chlorine, the catalytic influence of the metal compounds present in the reaction mixture being counteracted by the separation or inactivation thereof, at the latest when decomposition of the trichloroacetic acid formed begins, and chlorinating or further chlorinating the reaction mixture while excluding the influence of metal compounds, to yield substantially pure trichloroacetic acid.  Decomposition generally occurs when the solidification point of the reaction mixture is about 25-35 DEG  C. or above.  The catalysts can be separated, for example by distilling off the starting materials, preferably under reduced pressure, e.g. 25-500 mm. of mercury. Alternatively sulphuric and/or phosphoric acid may be added to the reaction mixture, either straight away or during the chlorination process, in an amount which is at least sufficient to bind the metal ions present in the reaction mixture.  The precipitated salts may then be separated before further chlorination to form trichloroacetic acid, by, e.g. filtration, centrifugation, decantation or sedimentation.  The apparatus used in the process of the invention should preferably be completely free of iron, and any ferric chloride present in the chlorine removed, e.g. by means of concentrated sulphuric acid and the presence of rubber should also be avoided.  These conditions should prevail at least from the moment that decomposition of the trichloracetic acid commences.  Suitable materials from which the apparatus may be made are enamel, glass and porcelain, and those parts of the apparatus which do not come into contact with the chlorine may be made of graphitized carbon or silver.  When copper only is present in the reaction mixture its inactivation is automatically caused by the hydrogen chloride formed in the course of the reaction. Suitable starting materials for the process of the invention are the mother liquors of chloroacetic acids obtained, e.g., in the purification of crude monochloroacetic acid, and these starting materials may contain water and/or chlorohydrocarbons, or chlorine and/or oxygen containing organic compounds.  The process of the invention is carried out at 85-160 DEG C. or higher under normal or elevated pressure, e.g. the saturation pressure of the chlorine at the temperature applied.  Comparative examples are given illustrating the advantages of the process of the invention over the prior art.
Patent GB-411512-A (GB)
Title: Improvements in and relating to electric resistances
IPC: H01C1/148
Filed: 1932-12-06
Abstract: 411,512. Direct connections between conductors. PYE RADIO, Ltd., Radio Works, and ROOT, E. V., 176, Milton Road, both in Cambridge. Dec. 6, 1932, No. 34550. [Class 38 (i).] A rod resister 10, or one on which a coating may be deposited, has its ends chamfered for the reception of terminal caps 11 having integral lugs 13 and made of sheet metal, the caps being ironed on to the resister under die pressure.
Patent GB-1314893-A (GB)
Title: Multiple layer reversal colour photographic light-sensitive
IPC: G03C7/384
Filed: 1970-07-16
Abstract: 1314893 Colour photographic light-sensitive silver halide processing FUJI PHOTO FILM CO Ltd 16 July 1970 [17 July 1969] 34615/70 Heading G2C Colour mixing caused by mixing of cyan or yellow dye in the green-sensitive layer of a colour photographic light-sensitive material having on a support at least a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a blue-sensitive silver halide emulsion layer in a coupler in developer processing method performed with successive use of colour developers containing respectively diffusible couplers of cyan, yellow and magenta, is minimized by incorporating before exposure and processing a magenta coupler, which does not appreciably diffuse into the other layers during the development, into the green-sensitive layer. The diffusion resistant coupler may have one of the formulae:- wherein R 1  is aryl, heterocyclyl, carbamyl or thiocarbamyl which groups may be substituted; R 2  is H, alkyl, aryl, amino, ureido, amido, sulphonamido or sulphamyl which groups may be substituted, or 2-propenyl; R 3  is 1-4C alkyl or aryl; and X is H or a group capable of being liberated at coupling; at least one of R 1  and R 2  having at least one hydrophobic group having 8-30C atoms so as to provide the diffusion-resisting property of the coupler. Many examples are given of the magenta couplers. The magenta coupler is preferably present at 0À0005 to 0À25 mole per mole silver halide in the green-sensitive emulsion layer. The coupler may be incorporated into the emulsion after ripening and before coating.
Patent GB-928310-A (GB)
Title: Method of coagulating rubbery polymer latices containing dispersed pigmenting agents or reinforcing agents
IPC: C08J3/215
Filed: 1959-12-29
Abstract: The subject-matter of this Specification is almost wholly identical with that described in Specification 928,309, but the claims are directed to a method of continuously coagulating rubbery polymer latices containing dispersed pigment and/or reinforcing agent (such as carbon black) by mixing a latex of the rubbery polymer with an aqueous suspension of pigment and/or reinforcing agent and continuously coagulating the resultant mixture in a continuous operation by addition of fresh coagulant substantially free of recycled serum to produce coagulum of the rubbery polymer containing dispersed pigment and/or reinforcing agent, the resultant coagulum then being separated from the serum. Specification 903,245 also is referred to.
Patent GB-1169048-A (GB)
Title: N-(1-Alkyl-2-Pyrrolidylmethyl)-3-Alkoxy- (or Hydroxy)-Indole-2-Carboxamides and their preparation
IPC: A61K31/40
Filed: 1967-07-28
Abstract: 1,169,048. N - (1 - Alkyl - 2 - pyrrolidylmethyl)- 3-alkoxy (or hydroxy)-indole-2-carboxamides. SOC. D'ETUDES SCIENTIFIQUES ET INDUSTRIELLES DE L'ILE-DE-FRANCE. 28 July, 1967 [29 July, 1966; 18 Oct., 1966], No. 34864/67. Heading C2C. Novel N - (1 - alkyl - 2 - pyrrolidylmethyl) - 3-alkoxy (or hydroxy)-indole-2-carboxamides of the formula wherein W, X, Y and Z are hydrogen, halogen, or a straight or branched C 1-5  alkoxy, at least two symbols chosen from W, X, Y and Z must represent hydrogen, A and R are each hydrogen or a straight or branched C 1-5  alkyl, and R 1  is CH 3  or C 2 H 5 , their acid addition and quaternary ammonium salts are prepared either by reacting an N - (1 - alkyl - 2 - pyrrolidylmethyl) amine with an alkyl 3-alkoxy (or hydroxy)-indole-2- carboxylate, obtained by etherifying, if desired, the corresponding alkyl 3-hydroxy-indole-2- carboxylate resulting from the cyclization of an alkyl ester of N-(2-carboalkoxyphenyl)-glycine, which is in turn prepared by reacting an appropriately substituted alkyl anthranilate with an alkyl monochloroacetate, or by reacting a l-alkyl-3-alkoxy (or hydroxy)-indole-2-carboxylic acid with 1,1<SP>1</SP>-sulphinyl diimidazole or 1,1<SP>1</SP> carbonyl diimidazole and treating the thus obtained N-acyl imidazole with an N-(l-alkyl- 2-pyrralidylmethyl) amine. The above 1-alkyl-3-alkoxy-indole-2-carboxylic acids are obtained by hydrolysing the corresponding methyl esters, prepared by etherifying methyl-N-alkyl indoxylates, produced by cyclizing the methyl esters resulting from the esterification of N-alkyl-N-(2-carboxyphenyl)- glycines, which are, in turn, obtained by reacting monochloroacetic acid with the N-alkylanthranlic acids prepared by treating anthranilic acid with the appropriate dialkyl sulphate or alkyl halide. Methyl 3-methoxy-5-chloroindole-2-carboxylate is prepared by reacting dimethyl sulphate with methyl-5-chloroindoxylate, resulting from the cyclization of N - (2 - carbomethoxy - 4 - chlorophenyl)-glycine, obtained by reacting the methyl ester of N-(2-carbomethoxy-phenyl)-glycine with N-chlorosuccinimide. Therapeutic compositions, suitable for oral, parenteral or rectal administration, contain the above novel compounds or an acid addition salt thereof as the active ingredient. The compositions are anti-emetics and depressants of the central nervous system.
Patent GB-1029378-A (GB)
Title: Improvements in or relating to disc brakes
IPC: F16D55/226
Filed: 1964-08-26
Abstract: 1,029,378. Disc brakes. H. TEVES, E. A. TEVES, and M. TAUSEND, [trading as ALFRED TEVES MASCHINEN-UND ARMATURENFABRIK KOMM. GES.). Aug. 26, 1964 [Sept. 4, 1963], No. 34929/64. Heading F2E. In a spot-type disc brake a brake casing 3 is slidable in a brake carrier 4, 5 and one arm 10 of the brake casing bears against a brake friction pad 16, the other arm 9 of the brake casing bearing an actuating device 11, 12, 13 to operate a second brake friction pad 15 against the other face of the brake disc 1, a slack-adjusting and centering device being provided between the brake carrier and the brake casing. The slack adjusting and centering device comprises a rod 20 which is attached by means of a pin 21 to the carrier 14 for the brake friction pad 15, the rod 20 passing through a sliding bearing 19 provided on a lug 17 and through a lug 18 mounted on the brake casing 3 and through a lug 5 attached to the brake carrier 4, both the lugs 18 and 5 housing friction elements 22, 6 respectively which are disposed on the rod 20 and are compressed by springs 23, 7 respectively. In operation, when the brake applying lever 11 is pivoted, a thrust member 12 and a screwed connection 13 are forced against the carrier 13 to urge the brake friction pad 15 against the brake disc 1 and by reaction the casing 3 approaches the brake disc 1 and the brake friction pad 16 is applied thereagainst. The pin 21 of the carrier 14 moves the rod 20 towards the brake disc and if excessive wear of the brake friction pads takes place the rod 20 is forced through the friction elements 6, 22 to adjust for brake pad wear. When the brake is released the force of the springs 7, 23 is available to return the rod 20 and the friction elements 6, 22. The friction pad 15 is moved away from the brake disc by the amount of the travel of the springs 7. The rod 20 moves the casing 3 and the brake friction pad 16 by the same amount of the right towards the brake disc 1 and the movement of the casing is opposed by the springs 23 which have twice the travel of the other springs and therefore compensate for the rightward movement of the brake casing produced by the springs 7 and also move the brake casing 3 and the brake friction pads 16 to the left away from the brake disc 1 by the same amount as the travel of the springs 7.
Patent GB-1356421-A (GB)
Title: Optical resonator apparatus
IPC: H01S3/106
Filed: 1971-07-26
Abstract: 1356421 Lasers HEWLETT-PACKARD CO 26 July 1971 [7 Aug 1970] 35056/71 Heading H1C Output energy is extracted from a laser resonator 2, 3, Fig. 1, by the combination of an acousto-optic light filter 6 and a polarization analyser 15, the filter cos-linearly diffracting the resonator light beam 4 on the acoustic wave so that a proportion of incident light polarized in a first plane is shifted to an orthogonal second plane, and the emergent light being the spatially separated by the polarization analyser into two beams with the orthogonally polarized beam constituting the output 16. The resonator includes a laser active medium 5 which may be He-Ne, Ar or an organic dye. The acoustooptic light filter includes an optically anisotropic medium 7, such as a birefringent crystal which may be LiNbO 3 , PbMoO 4  or CaMoC 4 , an optical shear wave of frequency fa acting along the light beam 4 being produced within the medium by a transducer 8. Polarization analysis is effected by a Glan-Taylor or Rochon prism, light in the first polarization plane being reflected towards resonator mirror 3 while light in the orthogonal second plane passes directly through the analyser to the output 16. Light remaining within the resonator remains at the stimulated emission frequency fo, while the output beam is changed in frequency to (fo Œ fa). The transducer 8 is driven by an oscillator 9 through a gain-controllable amplifier 11, increase of transducer excitation causing a corresponding increase of output intensity while changing the oscillator frequency fa enables outputs at other laser frequencies to be produced. In a modification, Fig. 4 (not shown), the polarization analyser reflects light in the orthogonal second plane into the output path 16 and transmits directly to a mirror coating on the analyser the light polarized in the first plane. In a further modification, Fig. 5, the resonator mirror 3 is a reflective coating between the anisotropic medium 7 of the acousto-optic filter 6<SP>1</SP> and the transducer 8, and the polarization analyser reflects out the orthogonally polarized light. A ring laser comprising resonator mirrors 23 and a reflective polarization analyser 15 is shown in Fig. 6. In this arrangement light in one direction in the ring produces an orthogonally polarized output 16 of frequency (fo + fa), while light in the opposite direction produces an output 16<SP>1</SP> of frequency (fo-fa). An alternative arrangement Fig. 7 (not shown), comprises a ring laser having an acousto-opic light filter in the optical path on each side of the laser active medium.