baber/WOPTO huggingface dataset:
Patent GB-707002-A (GB)
Title: Process for the preparation of improved oil-modified alkyd resins
IPC: C08G63/48
Filed: 1951-08-10
Abstract: Modified alkyd resins are made by simultaneously reacting (1) a polycarboxylic acid; (2) a methyl ester of a non-hydroxylated oil fatty acid; and (3) a saturated aliphatic polyhydric alcohol containing only primary hydroxy groups in an amount to permit substantially complete esterification of the polycarboxylic acid and transesterification of the methyl esters.  Catalysts for the reaction are lead, calcium and lithium naphthenates; litharge; calcium oxide; calcium, sodium or lithium hydroxide; sodium or lithium carbonate; and sodium methylate.  Specified acids are phthalic, malic, azelaic, oxalic, malonic, succinic, glutaric, p  sebacic, adipic, pimelic, suberic, tricarballylic, citric and tartaric or their methyl or ethyl esters, if desired in admixture with less than 10 per cent. of unsaturated polycarboxylic acids. Specified alcohols are trimethylol propane; trimethylol ethane; pentaerythritol; ethylene glycol; diethylene glycol; tetraethylene glycol; hexaethylene glycol, propane diol 1, 3; butanediol 1, 4; pentanediol 1, 5; and dipentaerythritol. Specified oil fatty acids are coconut, palm-kernel, corn, cottonseed, rape seed, mustard seed, soya, hydrogenated castor, olive, sunflower, chinawood, linseed, perilla, tung oiticica, sardine, whale and herring.  Solvents for the resin are xylene, toluene, mixtures of mineral spirits and aromatic solvents, terpenes, ethyl lactate, butyl acetate, methyl ethyl ketone, diisobutylketone, cyclohexanone and ethylene dichloride.  The resins may be mixed with alkylated melamineformaldehyde and urea-formaldehyde resins. In examples there are reacted (1) Phthalic anhydride, trimethylol ethane and the mixed methyl esters of cocnut oil fatty acids and cotton seed oil fatty acids; (2) Dimethyl phthalate, pentaerythritol and the methyl esters of soya oil fatty acids. U.S.A. Specification 2,469,371 is referred to.
Patent GB-788328-A (GB)
Title: Improvements in or relating to grid controlled gas-filled discharge tubes
Inventor: LAKE RONALD ERNEST
IPC: H01J17/56
Filed: 1955-06-30
Abstract: 788,328. Thermionic valves. ENGLISH ELECTRIC VALVE CO., Ltd. May 4, 1956 [June 30, 1955], No. 18925/55. Class 39(1). A gas filled discharge tube having a main cathode 1 adapted to be heated by alternating current, a control grid 5 and an anode 7, is proving with an auxiliary cathode located out of the magnetic field produced by the application of current to the heater 2 and adapted to emit electrons when the tube is at normal operating temperature. As shown the auxiliary cathode comprises a layer 9 of emissive material on an annulus fitted into the end of the heat shield 8 encircling the main cathode 1.
Patent GB-730355-A (GB)
Title: Improvements in and relating to resistance elements
IPC: H01B1/10
Filed: 1953-07-08
Abstract: 730,355. Temperature - variable resistors. GENERAL ELECTRIC CO. July 8,< >1953 [July 12, 1952], No. 18943/53. Drawings to Specification. Class 37. Thermistor elements are made of resistance material comprising a compressed sintered mixture of metal sulphides including, by weight, from 2 to. 20 per cent molybdenum sulphide, 2 to 20 per cent zinc sulphide, 2 to 15 per cent of at least one sulphide selected from the group consisting of barium sulphide and calcium sulphide, the remainder consisting of an additional metal sulphide, e.g. :and particularly silver sulphide, exhibiting a definite break in its temperature-resistance curve (i.e. a steep decline in resistance value at a critical temperature). Preferably the calcium sulphide content is below 10 per cent and the zinc sulphide content from 5 to 15 per cent. Also for best results the molybdenum sulphide content should not be more than about twice the zinc sulphide content. Example compositions are made up of 12 parts silver sulphide, 0.5 part molybdenum disulphide, 0.5 part free sulphur and either (a) 1.2 parts zinc sulphide and 0.8 part barium sulphide or (b) 0.8 part zinc sulphide and 1.2 parts calcium sulphide. The method of preparing the materials and forming and stabilizing the thermistor elements is substantially the same as set forth in Specification 682,887. The specific use of zinc sulphide and either calcium sulphide or barium sulphide or both means the provision of thermistors having higher voltage and temperature ratings than those described in Specification 682,887. For D.C. zinc sulphide and calcium sulphide together ensure excellent operating characteristics whilst for A.C. mixtures comprising zinc sulphide and barium sulphide are preferred. The metal sulphide exhibiting a break in its temperatureresistance curve is referred to as the base sulphide and thermistor elements having different break point temperatures can be obtained by substituting other base metal sulphides such as the sulphides of sodium, potassium, copper, platinum, mercury, lead, antimony, aluminium, chromium, nickel and cadmium.
Patent GB-722753-A (GB)
Title: Mechanism which enables to effect by one single operation, the preliminary releasing of the friction clutch and the engagement of gears in automobile transmissions
Filed: 1952-07-28
Abstract: 722,753. Controlling change-speed gearing. REIS, S. July 28, 1952 [Aug. 1, 1951], No. 18992/52. Class 80 (2). The gear lever 31 of a motor vehicle has pivoted to its lower end a lever 1, the upper end of which engages a slot 5 in a gear rod 6 while its lower end engages a slot 7 in a ported sleeve 8 normally held centrally on a hollow ported member 9 by opposing springs 24, 25 so that liquid supplied by a pump 29 flows freely through the registering ports 22, 23. Recesses 10, 13 in the rod 6 and in a spring-loaded rod 12 co-operate with a slidable locking pin 11, rod 12 being connected, with lost-motion at 21, to the clutch disengaging lever 19 operated by a piston 27 in a cylinder 26. With the parts in the neutral position shown, the clutch 20 is engaged and rod 6 is locked by pin 11. If lever 31 is moved clockwise (or anti-clockwise), lever 1 reacts against the locked rod 6 and moves sleeve 8 to the left (or right) to bring the ports 22, 23 out of register. The pressure liquid thus passes to cylinder 26, causing first disengagement of clutch 20 and then movement of rod 16 to the left, so unlocking rod 6. On continued movement of lever 31, rod 6 then moves left (or right) to engage a gear. On release of the lever 31, sleeve 8 returns to central position, causing clutch engagement lever 31 moving back slightly towards central position. If lever 31 is now moved back to neutral position, rod 6 moves back to neutral but the clutch 20 remains engaged. Pin 11 now disengages from recess 13. and engages recess 10, so that rod 6 is again locked in neutral position, and, on again moving lever 31 from neutral position, the clutch is first disengaged. The lever 19 may also be connected to the engine throttle so as to reduce the throttle opening when the clutch is disengaged.
Patent GB-415476-A (GB)
Title: Improvements in or relating to heat insulation
IPC: F16L59/02
Filed: 1933-02-23
Abstract: An alloy of poor heat conductivity for a heat insulation unit comprises iron with 30-40 per cent of nickel.
Patent GB-627817-A (GB)
Title: Improvements in or relating to electroplating copper
IPC: C25D3/40
Filed: 1947-07-17
Abstract: A sulphided amine for use as a constituent of an electro-plating bath (see Group XXXVI) may be prepared by mixing a small proportion of sulphur with triethanolamine, followed by agitation and successive heating and cooling of the mixture for several hours.  The sulphided amine may also be obtained by reacting toluidine with sulphur, after which triethanolamine is added.  The product, after removal of a water layer, is dissolved in diethyleneglycolmonobutylether and agitated with water to form an emulsion.  The reactions involved are indicated by the formul  shown.  The solubility of the amine employed as a starting material in preparing the sulphided amine may be increased by the presence of water-solubilizing groups, for example, hydroxyl, carboxyl and sulphonic groups.  Thus anthranilic acid may be used instead of toluidine.  In a similar manner, other amino carboxylic acids of the benzine and naphthalene series may be employed.  The sulphiding of the amine may be effected with sulphur compounds instead of the sulphur element.  The sulphur may be introduced by diazotizing the organic primary amine and treating the resulting compound with a solution of potassium sulphide or sodium sulphide or with hydrogen sulphide (under pressure).  Another method involves dissolving the amino compound in a solvent and treating it with ammonium thiocyanate and an oxidizing agent such as bromine.  In place of using triethanolamine other alkylolamines may be used such as aminoethylethanolamines, dimethylethanolamines, methylethanolamines, mixed isopropanolamines, monoisopropanolamines, di-isopropanolamine, tri-isopropanolamine, methyldiethanolamine, N-acetylethanolamine, phenylethanolamine, phenyldiethanolamine, cyclohexylethanolamine, trihexanolamine, benzylethanolamine and octylethanolamine.
Patent GB-582393-A (GB)
Title: Adjustable stool for gate belt conveyors
IPC: B65G39/10
Filed: 1944-10-05
Abstract: 582,393. Endless-belt conveyers. DUNCAN, A. W., and MINING ENGINEERING CO., Ltd. Oct. 5, 1944, No. 19149. [Class 78 (i)] In a conveyer for use in coal mines the framework is supported on stools having members independently adjustable to carry the respective sides of the structure at different heights if necessary. Each stool comprises two U-shaped side members 1, Fig. 2, provided with feet 5. Members 2 are slidably mounted on the vertical limbs of the members 1 and are secured by grub screws 4. The members 2 are bolted to the feet 3 of the conveyer structure 11. Slidable tee clamps 6 mounted on the limbs support a bar 7 which carries centrally a tee 8 for supporting the ends of the bar 9, Fig. 1. This bar is secured by grub screws.
Patent GB-280167-A (GB)
Title: Improvements in centrifugal apparatus
IPC: B04B15/12
Filed: 1927-07-19
Abstract: 280,167. Western States Machine Co., (Assignees of Roberts, E.). Nov. 5, 1926, [Convention date]. Driving; treating substances with liquids. - In a centrifugal machine for the washing and drying of sugar, a starting-device, a spray and an automatic brake are associated with a timemechanism so that the duration of each of the different operations can be varied an d set according to the particular requirements of the case. The machine which is suspended by a hanger e, Fig. 1, secured to beams f, has a shaft b supporting a basket a inside a syrup collecting casing c, and is driven by the overhead shaft h of an electric motor. A brake drum d is secured to an enlarged portion b<1> of the shaft and is engaged by interior brake shoes which are moved outwards into frictional engagement. At starting, the attendant throws the starting lever 1 to low speed position and admits the load of wet sugar into the basket; the lever is then moved to the high speed position and the subsequent operations of separation, washing, and drying are controlled by the timing mechanism. Spring-controlled toggle levers control a bolt 6 to hold the lever in its neutral and low speed positions, but it is locked in its high speed position by a latch 12 which is released at the end of the operations when the lever 1 is returned to its neutral position by a spring 9. The timing mechanism, Figs. 9 and 11, is driven from the basket shaft through a friction wheel 30, and has three independently adjustable members; one 45<d> starts the sprayer after a predetermined period of separation, the second 47d stops the sprayer and the third 46d releases the timer clutch after a predetermined period of drying, and also releases the main starting lever 1. To release the arm 1 the timing member 46<d> engages the arm 19<a>, Fig. 9, which by means of the rod 18, lever 17<a>, 17b, rod 16 and arm 15, Fig. 6, retracts the latch 12. A link 22 connects the arm 1 to a coupling on the brake spindle 24, Fig. 7, which carries a disc 25 supporting the toggle levers which operate the brake. An arm 27 on this spindle is linked to the switch 28 and movement of the arm 1 therefore operates the switch to high speed, low speed, or off position. A manual release for the arm 1 is also provided. The valve 53, Fig. 9, through which washing water is supplied to a reciprocating spray pipe 54 is opened by the engagement of the timing member 45<d> with a dog 60<b>, and the latch to then engages the stop 61. After the spray has operated for a certain time the valve is closed under spring action by the engagement of the timing member 47<d> with the finger 62 thereby disengaging the latch 60 from the stop 61.
Patent GB-775465-A (GB)
Title: Improvements in semi-conductor devices
Inventor: UBBELOHDE ALFRED RENE JOHN PAU
IPC: H01L49/00
Filed: 1952-07-29
Abstract: An organometallic addition compound in which the metallic element has an ionization energy not greater than that of calcium and the organo portion is derived from an organic compound containing one or more linkages whose bond order is greater than unity and having a sufficiently high affinity for electrons to form an addition compound without immobilizing any transferred electrons with the formation of an ion, is prepared by direct impingement in high vacuo of the metallic element vapour on the organic compound, or by bringing together the metallic element and the organic compound in the presence of an inert solvent in an oxygen-free atmosphere and the reaction product is either treated to remove excess organic compound and solvent by elutriation, preferably followed by evaporation of any remaining solvent in vacuo, and any unreacted metal may be removed mechanically from the desired product, or filtered in the complete absence of air and moisture, the filtrate is cooled, and the precipitated desired product is washed with a liquid in which it is insoluble to free it from solvent and dried.  The organometallic addition compound formed by any of the processes referred to above may be subsequently treated to vary the ratio of metal to organic compound, i.e. by elutriation and filtration followed by removal of the solvent in vacuo, or by sublimation of part of the organic compound in vacuo at a temperature below that at which the addition compound breaks down.  The metal in the organometallic addition compound may be lithium, sodium, potassium, rubidium, caesium, calcium, strontium, barium, lanthanum, indium or praseodymium.  The organic compound may be an aromatic compound with three or more condensed rings, a long-chain aliphatic hydrocarbon having conjugated double-bond systems -particularly such an aliphatic hydrocarbon in which there are one or more rings as substituents, or a cycloaliphatic hydrocarbon having a ring of eight or more carbon atoms and a system of conjugated double bonds.  Analogous compounds in which one or more carbon atoms are replaced by nitrogen atoms may also be used.  Specific organic compounds mentioned are tetraphenylethylene, 1 : 1-bis-diphenylethylene, p-terphenyl, diphenylfulvene, bis-diphenylene-ethylene, anthracene, 11,3-triphenyl-indene, 2,6 - dimethyl - 4 - methylene - hepta - 2,5 - diene, 1 - diphenylene - 4 - phenyl - buta - 1,3 - diene, tetra - (p - dimethylaminophenyl)-ethylene, 1 - cyano - 1,2,2 - triphenylethylene, 1,3,5 - triphenyl - 2,4 - diazapenta - 1,4 - diene, 5 - phenylacridine, 2,4,5 - triphenyl - 4,5 - dihydroglyoxaline, dibenzopyrazine and dixanthylene.  In a number of preparations, organometallic addition compounds are prepared from sodium, potassium and lithium and anthracene, and lithium and cyclo-octatetraene.
Patent GB-1091002-A (GB)
Title: Improvements in or relating to apparatus for cutting castings
IPC: B22D11/126
Filed: 1965-05-06
Abstract: 1,091,002. Cutting by fusion. KOPPERS CO. Inc. May 6, 1965 [May 28, 1964], No. 19242/65. Heading B3V. Apparatus for severing a moving elongated casting 25, Fig. 3, has a feeler assembly 39 which engages the casting to position the cutter before cutting begins. The cutter is preferably a laser beam or an oxy-acetylene torch and is used to sever a continuous casting. The torch 11, Fig. 1 (not shown), is mounted on a support (15) pivoted at (19) on a carriage (23) running along overhead tracks and which can be clamped to the moving casting by hydraulic clamps (37). When a selected length of casting has passed an electronic counter, a signal is produced which causes the torch to be lowered until a wheel 35 rides on the casting. Thereafter the clamps (37) are actuated and an hydraulically-operated rotary actuator 31 then drives gearing 29, 27 to rock the support 15 about its pivot which brings a pivoted feeler 41 into engagement with the front surface of the casting, Fig. 5 (not shown). Further pivotal movement to the position of Fig. 7 (not shown), causes the feeler 41 to actuate through linkage (44), (47), Fig. 2 (not shown), a switch 57 which stops the rocking movement and opens the oxygen and pre-heat valves. An electric timer is also energized whereby after a delay sufficient for pre-heating, it turns on the cutting oxygen and restarts the rocking movement of the torch which severs the casting. At the end of this movement a further switch is actuated to shut off the torch and return it to the starting position of Fig. 4 (not shown) and also to release the clamps (37) which permits return of the carriage by means of a power winch. The casting may be of steel of square or rectangular cross-section.
Patent GB-704616-A (GB)
Title: Improvements in or relating to number-printing apparatus
IPC: B41F13/00
Filed: 1951-08-16
Abstract: 704,616. Number printing apparatus. TIMSONS, Ltd., and DICKINSON, C. H. July 21, 1952 (Aug. 16, 1951], No. 19349/51. Class 100 (2) In a number-printing apparatus of the kind comprising a rotary shaft 2 upon which numbering devices 3 are mounted at spaced locations each arranged for co-operation with an impression cylinder 10 or equivalent, a duct roller, ink transfer rollers, &c. a component 1 is freely mounted on the rotary shaft 2 and arranged to be continuously driven in timed relation to the main machine and is coupled to and uncoupled from the shaft by means operable at the will of the attendant. Each numbering device comprises a group of adjacent and inter-related discs 4 bearing circular series of numerals and/or letters and a pawl and ratchet 5 or like mechanism actuated by a cain for rocking round one of the end discs 4' a step at a time with each remaining disc being turned from the next adjacent disc at required intervals. As shown the spur gear 1, running on a roller bearing 7 and driven by a gear 9 on the impression cylinder, has an annular recess 11 in which a V-shaped notch 12 is cut. A circular clutch part 13 rigidly secured on shaft 2 adjacent gear 1 is circumferentially grooved at 14 and has a reduced portion 15 extending into recess 11. A pawl 17 fulcrummed in a depression 16 in the part 15 is normally projected by a spring influenced plunger 18, so that the end 17a engages a notch 12 to couple the gear 1 and drive shaft 2, The pawl is withdrawn from notch 12 by means of a pivoted lever 20 having an arm 23 which engages the end 17a of the pawl, the lever being actuated by means of an eccentric 24 operated by a knob 26. A flexible brake strip 29 is anchored at one end to a member 28 adjustably mounted on the lever arm 27, accommodated in groove 14 in the clutch part, and anchored at the other end at a fixed point 30. Thus when knob 26 is turned to disengage pawl end 17a, as in Fig. 1, the braking strip 29 is pulled tightly into frictional contact with the part 13 so as to brake the shaft 2. Conversely when lever 20 is turned so that the pawl may engage notch 12, the braking strip slackens to release shaft 2. The positions of gear 1 and clutch part 13 on shaft 2 may be reversed.
Patent GB-334311-A (GB)
Title: Improvements in or relating to beds
IPC: A61G13/00
Filed: 1929-06-24
Abstract: 334,311. Sutton, R. C. June 24, 1929. Mattresses.-A mattress for use in a bedstead adapted for obstetric purposes comprises two sections 13, 14, the section 13 being of a length equal to the bedstead and having hooks 26 by which it may be supported from the head posts 27 and the section 14 being formed with a concavity 15 in its upper surface, the walls of the concavity sloping from a semi-elliptical periphery to the lowest portion at the middle of the foot edge of the section.
Patent GB-265244-A (GB)
Title: Improvements in or relating to devices for facilitating the sharpening of safety razor blades, and to safety razors
IPC: B24D15/10
Filed: 1925-07-30
Abstract: 265,244. Salerni, P. M. July 30, 1925. Razors of the kind having a thick-backed or wedge-section blade a have the handle pivoted at or near the back edge of the blade to allow it to be turned towards either face of the blade to facilitate stropping &c. The handle is shown as having a tubular part b which may contain grease or oil slidably mounted on a member b<2> secured to a squared portion of a shaft a<2> passing through the blade. Member b is urged towards the blade a spring b<3>, and when its end bears against the back of the blade, the blade is resiliently held in central position in line with the handle, Figs. 4, 5. When the blade is turned through approximately a right angle, member b bears against a face of the blade and holds it in shaving position. A guard c may be provided, pivotally mounted on the blade at c', and acted on by a spring-pressed ball d which tends to hold the guard centrally with respect to the blade edge. With the blade substantially in line with the handle for stropping &c., the guard is free to take this central position, Fig. 5, but with the blade in shaving position a pin c<3> on the guard engages a shoulder a<3> formed on the end of shaft a<2> and holds the guard displaced to a suitable shaving position, Fig. 6. The end of the member b is inclined so that the guard is displaced different amounts according to the side to which the blade is turned, to vary the closeness of shave. The end of member b may be shaped to give a number of different angular adjustments by rotating it on member b<2> to one or other of a corresponding number of positions. Modifications are described in which the shoulder a<3> is replaced by suitably formed recesses &c. engaged by a pin on the guard, and in which the ball d is also replaced by a recess in the blade engaged by a pin on the guard. The stropping &c. is effected by hand, pressure being applied by a finger as indicated in Fig. 3.
Patent GB-263426-A (GB)
Title: Improvements in or relating to door locks
IPC: E05B17/20
Filed: 1926-08-05
Abstract: 263,426. Eras, V. J. M. Aug. 5, 1926. Locks, cases for; striking-plates for locks and latches.-Rim locks and latches and their striking plates have overlapping angular parts so that flexible tools cannot be forced into the cracks between doors and door posts for forcing back the bolts. The fore-end plate i of the lock or latch d is bent to form the overhanging part i<2> and the part i<1> which is screwed to the edge of the door. The striking plate g is correspondingly bent at g<2> and g<1>. When the door is closed, the parts i<2> and g<2> abut closely together. On this account, and owing to the tortuous nature of the passage from the outside of the door to the bolt f, no unauthorized forcing back of the bolt by the insertion of a flexible strip is possible.
Patent GB-147487-A (GB)
Title: Improvements in processes for the reduction in size of the bubbles contained in glass
IPC: C03B5/225
Filed: 1920-07-08
Abstract: 147,487. Schott & Gen. Dec. 7, 1914, [Convention date]. Purification of metal.-Bubbles contained in the metal are reduced in size or entirely eliminated by subjecting the glass while in a soft state to a pressure of at least 200 atmospheres, so that the gases contained in the bubbles are absorbed. Specincation 2912/67 is referred to