baber/WOPTO huggingface dataset:
Patent GB-836478-A (GB)
Title: Improvements in or relating to a car coupler
Inventor: METZGER WILLIAM JOSEPH
IPC: B61G3/06
Filed: 1957-11-26
Abstract: 836,478. Couplings for railway vehicles. NATIONAL MALLEABLE & STEEL CASTINGS CO. Nov. 26, 1957, No. 36832/57. Class 103(5) A car coupler having both horizontal and vertical angling movement comprises, a head having a coupling hook member 27 pivoted at 30 and engaging a centralizing spring 36, a horizontal locking bolt 50 provided with a projection 50a, and a pivoted uncoupling cam 40 which may be engaged by the projection 50a when the bolt 50 is turned to the unlocking position, to move the coupling member 27 of another similar head to the uncoupling position. A pin 48 forming part of the locking mechanism is engaged within the bolt 50 so that when its head is turned the portion 50a of the bolt moves away from its locking position between the other hook 27 and the head wall 23 and engages an upstanding portion 41 of the cam 40 causing the cam to pivot and the portion 40b to move the other coupling member 27 out of coupling engagement. The lock 50 is provided with a lug 55 to limit forward rotation of the portion 50a so that the arm 40b of the cam cannot become wedged behind the portion 50a and prevent the operation of the lock. The head is provided with a wing projection on one side and a wing pocket on the other, which parts co-operate with a pocket and projection respectively on a similar head when coupling therewith. The projection and pocket have co-operating sloping faces which assist in the gathering of the heads and ensure that the final interlocking movement takes place in a longitudinally straight direction. The face of the head is provided with service couplings.
Patent GB-809743-A (GB)
Title: Improvements in and relating to natural rubber articles
Inventor: NEALE ALBERT EDWARD TONEY
IPC: C08K5/098
Filed: 1954-12-21
Abstract: The surface cracking of a vulcanized natural rubber article due to exposure to the atmosphere and/or to flexing during use is reduced by incorporating in the rubber a beryllium, magnesium, calcium, strontium, or barium salt of an aliphatic carboxylic acid.  The preferred salt is that of a fatty acid, an olefine monocarboxylic acid, or an aliphatic hydroxycarboxylic acid, and may consist in a propionate, butyrate, caprylate, laurate, myristate, palmitate, stearate, oleate, lactate or ricinoleate.  A strontium salt of a fatty acid containing 8 to 18 carbon atoms, e.g. strontium laurate, is preferred.  In examples are described the preparation and testing of the resistance to cracking of samples prepared by vulcanizing mixes containing natural rubber and 4 per cent by weight of strontium oleate, 4 per cent strontium ricinoleate, 2 and 4 per cent strontium laurate, 4 per cent barium lactate, and 4 per cent calcium laurate, respectively.  According to the Provisional Specification the anti-cracking agent may, alternatively, consist of an alkaline earth metal salt of an aromatic carboxylic acid, e.g. phthalic acid.
Patent GB-1125258-A (GB)
Title: A process for the continuous production of high polymer polyesters or mixed polyesters
Inventor: REICHEL GOTTFRIED
IPC: C08G63/81
Filed: 1967-08-11
Abstract: 1,125,258. Polyesters. CHEMIEFASERWERK " FRIEDRICH ENGELS " VEB. 11 Aug., 1967, No. 36897/67. Heading C3R. In a process for the continuous production of high M.W. polyesters or mixed polyesters from alkyl ester(s) of dicarboxylic acids or from dicarboxylic acid by transesterification with ethylene glycol or other polyhydric alcohol, the reactants are precondensed in successive reaction stages with the evaporation of at least one of the components of the reaction mixture. The melt viscosity of the precondensation product emerging from the reaction mixture is continuously measured; whenever the melt viscosity exceeds a certain predetermined value a di- or poly-hydric alcohol, or another solvent which is readily evaporated under the subsequent polycondensation conditions, is added to the precondensation product via a dosing device which is controlled by the viscosity measuring device. The alcohol or solvent may be added in the lower part of the precondensation apparatus. The predetermined meltviscosity may be higher than that which is necessary for the subsequent polycondensation process. Examples relate to the preparation of polyesters from (1) dimethyl terephthalate and ethylene glycol; (2) diethyl adipate and glycerol; and (3) terephthalic acid and ethylene glycol.
Patent GB-367953-A (GB)
Title: Improvements in and relating to centrifugal casting
IPC: B22D13/00
Filed: 1930-12-08
Abstract: 367,953. Centrifugal casting. POLLAK, J. E., 20, Holborn, London.-(Hundt & Weber, Ges.; Geiswied, Siegen, Westphalia, Germany.) Dec. 8, 1930, No. 37012. [Class 83 (i).] Casting-machines ; metal-pouring ; moulds ; cores and core-bars ; castings, extracting.-Cores 9 are used in centrifugal moulds 2 to produce hollow bodies having cavities in addition to and separate from those produced by the centrifugal action. The cores may be of clay carried on supports 8 or 81 preferably hollow for venting and if necessary for removal of the core material by water or air. The cores may be wholly or partly of metal 14, Fig. 3. The closure 4, Fig. 2, may have a number of holes 12 for mounting cores, those not in use being closed by plugs. If desired two moulds 37, Fig. 6, may be journalled in a frame 34 which can be turned by hand or power about pivots 33 and then clamped, in order that the mould-axis may be vertical, horizontal, or inclined. The moulds are driven from a shaft 44 on a fixed frame 32 through variable-speed, friction gear 43, 42 and friction, bevel gear 40, 39, 38 of which the wheels 39 can be moved for adjustment or to stop the corresponding mould which is brought to rest by a brake 49. One mould may be prepared while the other is in use. The moulds may be cooled by air or water pipes 52. The bottom of the mould may have a distributing cone 53, Fig. 9, which may be grooved.
Patent GB-868281-A (GB)
Title: Production of chloroprene
Inventor: JENKINS PHILIP ALDWYN
IPC: C07C17/42
Filed: 1957-11-28
Abstract: Chloroprene is prepared by heating 3:4-dichlorobutene-1 with an aqueous solution of an alkali metal or alkaline earth metal hydroxide in the presence of a mercaptide, which is defined as a metal derivative or salt of a compound containing at least one thiol (-SH) group.  The mercaptide may be added as such or may be formed insitu. Specified mercaptides are the salts of propyl, butyl, amyl, hexyl and benzyl mercaptans, thiosalicylic acid, thioglycollic acid, trithiocarbonic acid or O-alkyldithiocarbonic acid; salts of the two last acids are formed by addition of CS2 or CS2 plus an alcohol to the reaction mixture. Substances which are converted to mercaptides under the reaction conditions include the thiols themselves, thiourea and complexes of thiourea with alkyl halides or with 3:4-dichlorobutene-1, and 2-mercapto benzthiazole; potassium ethyl xanthate is also used. The concentration of mercaptide is preferably 0,1-5,0% by weight based on the volume of reaction mixture.  The mercaptide reduces polymer formation.
Patent GB-332870-A (GB)
Title: Process and apparatus for the manufacture of corrugated tubes
IPC: B21D11/08
Filed: 1929-12-04
Abstract: 332,870. Meyer-Keller et Cie, Akt.- Ges., O. Jan. 18, 1929, [Convention date]. Tubes.-A tube 1 is corrugated by a profiled ring 4 mounted in a ball bearing 5 in a rotating head 3 and displaced slowly eccentrically to the tube axis by means of a bell-crank 7 engaging a lug 6 on the outer race of the bearing; or the tube may be rotated and the ring given a transverse movement only. The tube is fed forward through the bush 2 by rubber rollers. The portions between the corrugations are formed into crests by subsequent upsetting. Eccentric grooves may be formed by mounting the tube eccentrically in the head whereby pipe bends 1 as shown in Fig. 4 may be produced.
Patent GB-1193390-A (GB)
Title: An improved method and apparatus for the manufacture of Steel Tubes
IPC: B21B21/00
Filed: 1968-08-05
Abstract: 1,193,390. Rolling tubes. MANNESMANN A.G. 5 Aug., 1968 [3 Aug., 1967; 11 Aug., 1967], No. 37207/68. Heading B3M. A steel tube having longitudinal external fins is produced by the grooved rolls 13, 14 of a pilgrim rolling mill, the rolls firstly reducing the wall thickness of a tubular bloom 12, while initially forming fins 15 (Fig. 1), and then bring- ing the fins to their final dimensions without altering the tube wall thickness (Figs. 2, 3). A wholly or partly tapered mandrel 17 is used in conjunction with the rolls, the relationship at any moment between the diameter of the mandrel and the corresponding diameter of the roll pass determining the wall thickness of the tube.
Patent GB-806729-A (GB)
Title: Halogenated benzo-1:3-oxazine derivatives
Filed: 1956-12-06
Abstract: The invention comprises compounds of the general formula <FORM:0806729/IV (b)/1> (wherein R1 is hydrogen or a halogen atom, R2 is a halogen atom and n is 1 or 2) and their preparation by condensation of salicylamide or a 5-halogeno-salicylamide with one of the following reagents under the conditions specified: (a) a b -halo-propionaldehyde or halo-acetaldehyde in an inert organic solvent, e.g. benzene or chloroform, which may act as a water entrainment agent, and in the presence of a condensation agent such as a hydrogen halide gas, concentrated sulphuric acid or a weak acid such as benzene- or toluene-sulphonic acid or phosphoric acid; (b) an acetal of the aldehydes of (a) in the presence of a condensation agent, e.g. hydrogen halide gas or concentrated sulphuric acid, and an alcohol binding agent, e.g. glacial acetic acid, advantageously in an inert solvent, e.g. chloroform; (c) a compound R3-O-CH2-CH2-CHO (wherein R3 is a lower alkyl radical) or an acetal thereof in an inert organic solvent, e.g. chloroform or benzene, in the presence of a hydrogen halide and preferably also in presence of an alcohol binding agent such as glacial acetic acid; and (d) acrolein in an inert organic solvent, e.g. glacial acetic acid, with or without chloroform, in the presence of a condensation agent, e.g. a hydrogen halide gas.  Methods (c) and (d) cannot be used to prepare compounds wherein n is 1.  The acetals used in (b) may be prepared in situ, e.g. by the dropwise addition of acrolein to a lower alcohol in chloroform saturated with a hydrogen halide gas.  The invention also comprises the preparation of the compounds (I) wherein R2 is iodine, by reacting the compounds, wherein R2 is chlorine or bromine, with an alkali metal iodide, e.g. KI or NaI.  Examples describe the preparation of 4 - oxo - 2 - (b  - chloroethyl) - 2 : 3 - dihydro - (benzo - 1 : 3 - oxazine) and the corresponding 6-bromo- and 6-chloro-compounds, 4-oxo-2-(b -bromoethyl) - 2 : 3 - dihydro - (benzo - 1 : 3 - oxazine), 4 - oxo - 2 - chloromethyl - 2 : 3 - dihydro - (benzo - 1 : 3 - oxazine), 4 - oxo - 6 - chloro - 2 - bromomethyl - 2 : 3 - dihydro - (benzo - 1 : 3 - oxazine) and 4 - oxo - 2 - (b  - iodoethyl) - 2 : 3 - dihydro - (benzo - 1 : 3 - oxazine) by one or more of the processes of the invention, glacial acetic acid being added as a catalyst in the preparation of the fourth named of these compounds by method (a).
Patent GB-1457229-A (GB)
Title: Telephoto objectives
IPC: G02B13/02
Filed: 1975-09-11
Abstract: 1457229 Telephoto lenses CANON KK 11 Sept 1975 [11 Sept 1974] 37354/75 Heading G2J The front group A is positive and is stationary during focussing while the rear group B is negative and is movable B to B' for focussing from infinity to a close object. In group B, the strongest convergent surface, R 7  in Fig. 2, is convex to the front and the strongest divergent surface, R9 in Fig. 2, is concave to the rear and is located rearwardly of the strongest convergent surface. In a modification, Figs. 1, 3 (not shown), group A comprises in this order: a biconvex element, a negative meniscus concave to the front and a biconvex element. In Fig. 3 the elements of B are airspaced. In another modification, Fig. 22, (not shown), the rear group B comprises two sub-groups e.g. two negative menisci which move differentially during focussing. Data are given for three examples.
Patent GB-454647-A (GB)
Title: Improvements in or relating to the excitation of luminous discharge tubes
IPC: H05B41/232
Filed: 1934-12-31
Abstract: 454,647. Supply systems for discharge lamps. SOC. ANON. POUR LES APPLICATIONS DE L'ELECTRICITE ET DES GAZ RARES ETABLISSEMENTS CLAUDE-PAZ & SILVA, 8, Rue Cognacq-Jay, Paris. Dec. 31, 1934, No. 37388. Void [Abridged as open to inspection under Sect. 91 of the Acts, Jan. 21, 1936]. [Class 38 (iv)] Luminous discharge tubes are energized from a high tension line by arranging an auxiliary line in the vicinity of, and substantially parallel to the high tension line and connecting one end of the discharge tube to the high tension line and the other end to the auxiliary line. In one arrangement the auxiliary line 2 is suspended by insulators 6 from the high tension line 1, the discharge tube 4 being connected between the line 1 and the middle point of the line 2. Alternatively, the auxiliary line may be connected between the ends of two discharge tubes, the other ends of these tubes being connected to the high tension line to reduce high-frequency oscillations, impedances may be inserted in the leads connecting the discharge tubes to the auxiliary and high tension lines.
Patent GB-1390670-A (GB)
Title: 4-phenoxy-3-hydroxy-butyramidine derivatives
IPC: C07D303/24
Filed: 1972-08-10
Abstract: 1390670 Butyramidine derivatives ORSYMONDE 10 Aug 1972 [13 Aug 1971] 37457/72 Heading C2C Novel butyramidine derivatives of the formula in which R is H or C 1-5  alkyl and X is H or OH, and acid addition salts thereof, are prepared by reacting imino ethers of the formula with ammonia, and if desired, reacting the resulting compounds in which X is H with hydroxylamine. 4 - (3,5 - Dimethoxyphenoxy) - 3 - hydroxybutyroimino ethyl ether hydrochloride is obtained bubbling hydrogen chloride into a solution of 4 - (3,5 - dimethoxyphenoxy) - 3 - hydroxybutyronitrile, obtained by reacting potassium cyanide with 3 - (3,5 - dimethoxyphenoxy) - 1 - chloro - 2- propanol resulting from the reaction between hydrogen chloride and 3-(3,5-dimethoxyphenoxy)- 1,2-epoxy propane, which is prepared by treating 3,5-dimethoxyphenol with epichlorohydrin. Pharmaceutical compositions, useful in the treatment of cardiac arrhythmia, contain at least one of the above novel compounds or non-toxic acid addition salts thereof and suitable carriers.
Patent GB-908580-A (GB)
Title: Position and orientation detector for a lift cage or the like
Inventor: HIGGINS LEONARD JAMES
IPC: B66B17/14
Filed: 1959-11-04
Abstract: 908,580. Detecting the position of skips or cages in shafts. PEEBLES & CO. Ltd., BRUCE. Feb. 1, 1961 [Nov. 4, 1959], No. 37462/59. Class 78 (4). A retractable member in the shaft of an unguided lift cage or mine skip co-operates with the cage or skip to give a signal which is operative only if the cage or skip has a predetermined orientation about a vertical axis and is at the same time at a predetermined level in the shaft. The retractable member in Fig. 1 comprises two parallel arms 22 pivotable together about an axis 23 from a retracted position parallel to the walls of a mine shaft 13 into the position shown in which they embrace the skip 11. If the skip is at the predetermined level and orientation, both the electromagnetic cores 16 carried by the respective arms 22 will embrace corresponding ferromagnetic armatures 15 on the skip so that a signal is derivable from windings on each of the cores. These signals form the inputs of an AND logic system which gives an output only if both inputs are simultaneously present. The retractable member in Fig. 3 is a U-shaped frame 30 which is horizontally slidable to embrace the skip 11 which, if it is at the predetermined level and orientation, depresses a plunger 34 which releases a catch to allow spring-biased movement of a ferromagnetic armature into a position embraced by the fixed core of a detector of the type comprising an armature and core such as 15 and 16 in Fig. 1, this detector being wholly carried by the frame 30. The means for moving the frame 30 into skip-embracing position comprises a fluid-pressure ram 27, the actuation of which is followed by that of a second such ram 37 by which the system of levers 38, 39, 29 are moved from the position shown into one in which projections 31 on levers 29 engage recesses 32 on the skip to hold the latter in the said predetermined position. This skip-holding condition may be detected and signalled by a further armature-and-core detector arranged in an AND logic system with the detector actuated by plunger 34, so that loading of the skip when controlled by the output of this AND system can only take place with the skip firmly held at the predetermined position and orientation. Specification 860,396 is referred to.
Patent GB-929189-A (GB)
Title: Sewing machines for the sewing of resilient workpieces
IPC: D05B23/00
Filed: 1960-11-02
Abstract: 929,189. Sewing-machines. DURKOPPWERKE A.G. Nov. 2, 1960 [Nov. 14, 1959], No. 37602/60. Class 112. A sewing-machine adapted to stitch resiliently padded work comprises a finger over which the stitches are formed, and means for regulating the height of the finger in proportion to the thickness of the work at the stitching- point. As shown, the invention is applied to a machine having in addition to the normal feed dog, a workfeeding foot and a work-feeding needle. The feeding foot 6 has a pair of workengaging members 61, 6<SP>11</SP>. Situated between the latter is a horizontal stitch finger 11 carried by a bar fixed to a block 12 pivoted to and slidable on the presser bar 9. A bell-crank lever 16, 17 pivoted at 21 on a fixed plate 19 carries adjustably on arm 16 a pin 15 slidably disposed in a horizontal slot 14 in block 12. The other arm 17 carries adjustably a pin 23 located between an arm 25 pivoted at 29 to plate 19 and the arm 26 of a bell-crank lever 26, 27 also pivoted at 29. Arms 25 and 26 are biased against pin 23 by a spring 28. Arm 27 carries a feeler member 30 adapted to engage the work between member 6<SP>1</SP> of the feeding foot 6 and a member 10<SP>1</SP> of the feeding foot 10. A pin 32, depending from block 12, is embraced by a forked member 33 fixed to a bar 35. One end of the latter is slidable in an aperture 36 in plate 19, and the other end is pivoted at 38 to an arm 39 pivoted at a fixed point 40. A pawl member 43, pivoted at 42 on arm 39, is biased clockwise by a spring 44. A handle 53, pivoted at a fixed point 52, is biased by a spring 58 to either the full line position or the broken line position shown. In the lull line position, a cam 51 carried by handle 53 moves pawl 43 into engagement with a notch 57 in a fixed stud 55. Arm 39 is thereby held out of engagement with a cam 46 fixed on a rotary shaft 47. When handle 53 is moved to the broken line position, a spring 45 draws arm 39 into engagement with cam 46 to impart reciprocation to bar 35, and thereby oscillation to finger 11 from one side to the other of the needle 8. When sewing work consisting of layers 61, 62 enclosing rubber padding 63, and of a normal thickness b, the work is compressed to a thickness a at the stitching point. Feeler 30, riding on the work, is raised from the level of the work support and thereby tilts lever 26, 27 clockwise, this movement being transmitted via spring 28 and arm 25 to lever 16, 17 to raise block 12, and hence the finger 11 substantially to the level of the uncompressed work. On leaving the presser foot the work expands to fill the loose stitches formed over the finger 11.
Patent GB-846473-A (GB)
Title: Improvements in or relating to centrifugal washing machines for aeriform media
IPC: B01D47/08
Filed: 1956-12-11
Abstract: 846,473. Gas-washers. BALFOUR & CO. Ltd., H., and BUREAU, A. C. March 11, 1958 [Dec. 11, 1956], No. 37788/56. Class 55 (2). [Also in Group XXIX] A gas-washer comprises a number of washing stages in a tower 1, each stage having a spray device 2 (see Group XXIX) rotated by the pressure of washing liquid supplied through a line 3 by a pump (not shown) and an annular baffle 14 which directs the liquid sprayed in a stage downwardly in the form of a cylindrical curtain through which gas to be washed entering the tower 1 at 17 and passing upwardly through each stage in the tower is directed. In all but the lowest stage the liquid sprayed is collected in a tank 12 and returned by a line 15 to the pump. Liquid in the lowest stage collects in a sump and may be returned to the pump by line 13.
Patent GB-1237462-A (GB)
Title: Production of vinyl chloride polymers
IPC: C08F14/06
Filed: 1968-08-08
Abstract: 1,237,462. Polymerizing vinyl chloride. BADISCHE ANILIN & SODA-FABRIK A.G. 8 Aug., 1968 [9 Aug., 1967], No. 37804/68. Heading C3P. Vinyl chloride polymers are produced by polymerizing less than 2% of the monomer in the presence of an initiator, separating the polymer formed and polymerizing the remaining monomer in a separate zone. The first step, which effects a purification, may be effected using liquid or gaseous monomer and may be continuous using solid or liquid catalyst; the polymer may be separated by distillation, centrifuging, filtration or electrostatic precipitation. The final polymerization is effected in bulk, solution, emulsion, suspension or preferably in gaseous phase by photopolymerization.
Patent GB-1035452-A (GB)
Title: Improvements in collapsible boxes
IPC: B65D5/36
Filed: 1961-10-23
Abstract: 1,035,452. Collapsible cartons. H. H. TALLENT & CO. Ltd., and J. H. F. TALLENT. Oct. 22, 1962 [Oct. 23, 1961], No. 37811/61. Heading B8P. A collapsible carton has flaps 28, 30, 32 and 34 extending from that edge of each wall 12, 14, 16, 18 which is remote from the base such that when the carton is erect the flaps project inwardly substantially at right angles to the walls and the flaps interlock with one another at the corners of the carton (see Fig. 1, not shown). Acute-angled V-shaped cuts 52 are made at the free corners of flaps 32 and 34, and obtuseangled V-shaped cuts 54 are made in flaps 28 and 30. The flaps interlock with side 56 of V- shaped cut 52 underlapping side 58 of V-shaped cut 54. Score lines 44 extend at 45 degrees from the lower corners of the carton to facilitate folding of the side walls.
Patent GB-908533-A (GB)
Title: Improvements in or relating to fire extinguishers
Inventor: SIMMONS EDWARD GEORGE
IPC: A62C13/00
Filed: 1959-11-10
Abstract: 908,533. Fire-extinguishers. FOAMITE Ltd. Feb. 10, 1961 [Nov. 10, 1959], No. 38062/59. Class 47. [Also in Group XXIX] In a fire extinguisher pressure container 1 having a dip-pipe 2, a diaphragm 3 is supported against the pressure by member 5 retained by split-pin 10. On removing the pin 10, the support 5 can move and allow the diaphragm to rupture and so open the container. The diaphragm 3 may be of polythene.