baber/WOPTO huggingface dataset:
Patent GB-711135-A (GB)
Title: Improvements in or relating to the production of threo-oxazoline derivatives
Inventor: HEYWOOD BASIL JASON
Filed: 1950-11-22
Abstract: A process for the preparation of the threo forms of oxazolines of the general formula <FORM:0711135/IV (b)/1> comprises treating with alkali an erythro form of a compound of the type <FORM:0711135/IV (b)/2> (where R represents an acyl or carboalkoxy group which is readily hydrolysed by the said treatment with alkali).  The invention also comprises as a step in the inversion of DL- and L-erythro-2-dichloracetamido-1-p-nitrophenyl-propane-1 : 3-diols involving the formation of DL- or D-threo 2-dichloromethyl-4-hydroxymethyl - 5 - p - nitrophenyl - D 2 - oxazoline with subsequent hydrolysis to the required threo diol, the process which consists in forming the said oxazoline by acetylating DL- or L-erythro - 2 - dichloracetamido - 1 - p - nitro - phenylpropane - 1 : 3 - diol, nitrating the 3 p  - acetoxy compound and treating an alcoholic solution or suspension of the resultant nitric ester with dilute sodium or potassium hydroxide solution at a temperature not exceeding 40 DEG  C. The radical R is, e.g., an acetyl, benzoyl, acid succinyl or carbethoxy radical.  The DL- or D-threo-oxazolines by dissolving in dilute mineral acid followed by neutralization yields the DL- or D-threo 2-dichloracetamido-1-p-nitrophenylpropane - 1 : 3 - diol.  In examples: (1) and (6) DL-erythro 2-dichloracetamido-3-acetoxy - 1 - p - nitrophenylpropane (from the reaction of DL-erythro 2-dichloracetamido-1-p - nitrophenylpropane - 1 : 3 - diol with acetyl chloride and pyridine) is reacted with concentrated nitric acid at from -60 DEG  to 0 DEG  C. to give DL-erythro 2-dichloracetamido-3-acetoxy-1 - p - nitrophenylpropan - 1 - ol nitric ester which with the addition of sodium hydroxide solution gives DL-three 2-dichloromethyl-4-hydroxymethyl - 5 - p - nitrophenyl - D 2 - oxazoline; (2) L-erythro 2-dichloracetamido-3 acetoxy - 1 - p - nitrophenylpropan - 1 - ol nitricester (from L-erythro 2-dichloracetamido-3-acetoxy-1-p-nitrophenylpropan-1-ol and concentrated nitric acid) is reacted with alkali to give D - threo - 2 - dichloromethyl - 4 - hydroxymethyl - 5 - p - nitrophenyl - D 2 - oxazoline; (3) DL - erythro 2 - dichloracetamido - 3 - benzoyloxy - 1 - p - nitrophenylpropan - 1 - ol on reaction with nitric acid gives DL-erythro-2-dichloracetamido - 3 - m - nitrobenzoyloxy - 1 - p - nitrophenylpropan - 1 - ol 1 - nitric ester which on treatment with alkali gives DL-threo 2 - dichloromethyl - 4 - hydroxymethyl - 5 - p - nitrophenyl - D 2 - oxazoline; (4) the same product is obtained similarly from the 1-nitric ester of DL-erythro-2-dichloracetamido-3-carbethoxyoxy - 1 - p - nitrophenylpropan - 1 - ol; (5) DL - erythro - 2 - dichloracetamido - 3 - succinyloxy - p - nitrophenylpropan - 1 - ol is converted to its nitric ester and then treated with alkali to give the same product as in (3).
Patent GB-332814-A (GB)
Title: Improvements in ovens
IPC: F24C15/12
Filed: 1929-09-20
Abstract: 332,814. Beaumont, J. H., (Loth Stove Co., Inc., W. J.). Sept. 20, 1929. Resistance ovens.-A cooking oven comprises an outer casing 1 in which is supported an inner liner 2, the latter carrying a supporting member 6 which is secured to a cross-bar 7 attached to the casing 1. In the construction shown, a bracing member 8, Figs. 9, is attached at top and bottom to the rear wall of the liner 2, and comprises a member 6 of U cross-section which seats in the correspondingly-shaped cross-bar 7 secured to the rear members 8<1> of the framework. A screw 7<1> passes through the bar 7 and member 6, and in securing the parts draws the liner rearwardly until a flange 4 on its front end makes contact with the front face 5 of the casing 1. Openings 11 in the frame 8 permit the oven terminal and contact clips to project through. The heating unit, as well as the oven pans, may be supported at different heights on corrugations 3 at the sides of the liner 2. The top 14 of the outer casing is provided with flanged edges, and with screws 16 in the rear flange which, on engaging the back wall of the casing, draw the cover rearwardly and so cause it to fit tightly.
Patent GB-167129-A (GB)
Title: Improvements in apparatus for the manufacture of wheel rims
IPC: B21D53/30
Filed: 1920-10-12
Abstract: 167,129. Michelin et Cie. July 27, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Hoops and rings.-A machine for making a number of wheel rims in one rolling operation has pairs of rolls B, C, D to convert a metal strip into the desired profile section and means such as a deflecting roller R to give the strip a circular shape so that it forms a spiral winding S. The strip is first straightened by rollers A and then directed, by adjustable guides F, to the profiling-rolls B, C, D, which have pass-adjusting means I, J, K and are driven by an electric motor M. The roller R is adjusted by a screw and nut and hand-wheels P. Q. The spiral is divided into rings which are brazed or otherwise made endless.
Patent GB-1474786-A (GB)
Title: Tunnel kilns
IPC: F27B9/02
Filed: 1974-06-28
Abstract: 1474786 Tunnel kilns CERAVER 28 June 1974 [13 July 1973] 28950/74 Heading F4B A tunnel kiln for heat treating elongated ceramic articles 5 having a circular cross-section comprises a main treatment chamber 3 through which the articles are rolled in container drums 4 themselves formed with longitudinal cylindrical passages receiving the articles, and other chambers 1 and 2 through which the container drums are pushed axially and at the same time given a rotary movement. The chambers have treatment gas inlets 27, 28 and 29 and outlets 30, 31 and 32 enabling the use of different gases and are separated by gas lock chambers 8 and 9 with doors 10-13. The chambers 8 and 9 may be supplied with the appropriate gas or gases to facilitate transfer of the ware. The ware carrying drums 4 are pushed through the kiln chambers by fluid motors 6, 7 and 35 and are separated in the axial direction by stub shafts 23. Mounted on the latter are distance pieces 24 with a length slightly greater than the diameter of the drums, contact of said distance pieces in chamber 3 thus preventing binding contact of said drums. Extending from the walls of chambers 1 and 2 are carbon felt seals 18, 19, 20 and 21 which contact the drums 4. The latter are formed with helical grooves 25 which engage lugs 26 on the chamber walls to rotate the drums as they are pushed axially through the chambers 1 and 2.
Patent GB-603860-A (GB)
Title: Improvements in mechanism for transferring bottles to and from bottle filling machines
IPC: B67C7/00
Filed: 1945-11-01
Abstract: 603,860. Rotary conveyers. RAYMOND, F. G., and BARNETT & FOSTER, Ltd. Nov. 1, 1945, No. 29029. [Class 78 (i)] In mechanism for feeding bottles to a rotary filling machine, a stabiliser is mounted in a position where each bottle holder arrives in the rotation of the machine ready to receive a bottle to be filled so that a bottle, which is thrust by a slide during its forward stroke off the feeding table on to the bottle holder, engages the stabiliser and is prevented from tilting. Each bottle 14 is transferred from the feeding table 3 to a holder 2 by an arm 12 projecting from a bar 8 which is slidably mounted in the side of a plate 1 and is reciprocated by rack-and-pinion mechanism 10. The stabiliser 17 is mounted adjustably on the plate 1 by means of a slotted clamping plate 18 provided with a scale 21 which indicates the positions for bottles of different sizes. Similar mechanism is provided at the other side of the plate for transferring a bottle from the machine to the crowning support 4. The shafts 22, 23 carrying the pinions 10, 11 are provided with sprockets 24, 25, Fig. 3, which are driven by chains 26, 27. One end of the chain 26 is connected by an adjustable clamp 28 to the slotted end 29 of a lever 30 and the other end is attached to a weight 31. The chain 27 is secured in a similar manner to a lever 38 and weight 39. The levers are pivoted at 42 and are depressed against the action of the weights by cams 43, 44 fixed on a continuously rotating shaft 57. Each pinion is connected to its shaft by a spring-controlled clutch 58, 59 in order that the arms 12, 16 may yield on meeting with undue resistance to their movement.
Patent GB-641160-A (GB)
Title: Improvements in smokers' ash receptacles
IPC: A24F19/00
Filed: 1948-11-10
Abstract: 641,160. Smokers' ash-receptacles. BAUGH, H. N., and BAUGH, J. Nov. 10, 1948, No. 29166. [Class 130] An ash receptacle has a pivoted plate 20 above the ash-well 28, a rod 23 and knob 25 being provided to rotate the plate 20 against a spring 26, and so open the well. The well may be emptied by turning the device on trunnions 13a mounted in slots in side members having flanges 11. It is retained upright by rib 12 on a spring back 9 forming the entrance for the cigarette ash. It is especially suitable for mounting in an opening 3 in a seat back of a vehicle to which it is attached by screws 5. The Provisional Specification describes a combination with a cigarette container from which cigarettes are delivered one at a time by turning the device. The ash receptacle is connected to the cigarette container by stud and slot connection.
Patent GB-1130237-A (GB)
Title: Method and apparatus for sensing the level of contents in a container
Inventor: HARVISON RONALD ERIC
IPC: G01F23/24
Filed: 1966-06-29
Abstract: 1,130,237. Measuring liquid level electrically. UNILEVER Ltd. June 26, 1967 [June 29, 1966], No.29179/66. Heading GiN. The level of material in a container is measured as the time taken for a probe 12 Fig. 1, to be lowered on a cable 9 from a predetermined position to the position where it contacts the material, a motor 4 driving a drum 7 carrying the cable at a constant speed by means of a belt 5. The cable 9 passes over a pulley 11, carried on a swinging arm 14 and supported by a spring 17, so that the probe 12 normally overcomes the spring pressure and a switch 22 is actuated by the arm 14. When the probe contacts the material surface, the spring retracts the arm and the switch 22 registers the end of the time measurement, the initiation of which is effected by a magnet 24 on the drum actuating a switch (23, Fig.2, not shown). The timing circuit includes a Miller integrator. The cable passes over a guide roller 10 mounted on a threaded spindle 13 which causes the cable to be laid evenly on the drum, end stops with microswitches (26, 27, Fig. 3, not shown) being provided to limit travel of the pulley 10 and the probe 12. Three such arrangements are connected by a selector switch (30, Fig. 5, not shown) to a timing means 28, and each one may be calibrated by measuring the time taken to touch the bottom of each bin.
Patent GB-628581-A (GB)
Title: Improvements in cask filling devices
IPC: B67C3/30
Filed: 1946-10-01
Abstract: 628,581. Filling casks. RYDER & CO. (MANCHESTER), Ltd., T., ANDREWS, J. E., and FAWCETT, H. Oct. 1, 1946, No. 29200. [Class 21] [Also in Group XXIX] A device for filling casks comprises two axial pipes a, b, the inner a delivering liquid, and the outer b venting air, and means for securing the device in a bunghole bush consisting of a resilient ring m round the outer tube, which is compressed to expand into the bush, between a fixed collar i and a movable collar k, the latter being depressed by a hand lever g operating cams n. The pipe a is closed by a spring loaded rubber valve d connected to the lever g and raised when the lever g is depressed. A diaphragm h separates the valve spring from the liquid delivered through a connection c to the pipe a. Air is vented through the pipe b to a connection e. The collar k has a conical portion entering between the ring m and the pipe b. In an alternative form, the diaphragm itself acts as a valve and is operated by a spring loaded spindle. The spindle may be held raised with the valve open by a cross pin and the spindle turned to enable the cross pin to enter slots permitting the spindle to close the valve.
Patent GB-425057-A (GB)
Title: Improvements in or relating to elastic fabrics for corsets, hat-bands, surgical stockings and the like
Filed: 1933-10-21
Abstract: 425,057. Elastic compound fabric. INTERNATIONAL LATEX PROCESSES, Ltd., 10, Lefebvre Street, St. Peter's Port, Guernsey, and BROWN, L., 2, Cambridge Street, Manchester. Oct. 21, 1933, No. 29202. [Class 140] A porous elastic fabric suitable for corsets, surgical stockings, cuffs, hat-bands, &c., consists of a spongy or cellular layer produced directly from an aqueous dispersion of rubber or like material, faced on both sides with soft, stretchable textile material such as stockinette. The spongy layer may be obtained, for example, as described in Specifications 332,525 and 332,526, [both in Class 70], from dispersions of or containing rubber, balata, guttapercha, synthetic rubber, coagulated rubber, waste, reclaim, or concentrated latices obtained as described in Specifications 219,635 and 290,313, [both in Class 70], which may contain compounding ingredients such as ultra accelerators of vulcanization. A foamed or frothed rubber dispersion may be applied on a layer of stockinette, and the second stockinette layer applied before or after setting, which may be effected by drying or as described in Specification 326,282 or 328,015, [both in Class 70]. A dispersion conditioned to set on heating or after a definite time interval, may be used.
Patent GB-1255674-A (GB)
Title: Electric switches
Inventor: BULGIN STANLEY EDWARD
IPC: H01H23/12
Filed: 1969-06-10
Abstract: 1,255,674. Snap-action switches. A. F. BULGIN & CO. Ltd. 5 June, 1970 [10 June, 1969], No. 29300/69. Heading H1N. In an electric switch, the movable bridging contacts 14, 16 are resilient, are shaped as shown and are located in chambers 28 in holder 12 and legs 24 project through apertures 30, contacts 14, 16 being held in by the dimensions of apertures 30 and base portions 26. The contacts are inserted into chamber 28 through openings 34. The switch shown is a toggleoperated snap-switch, the snap-spring engaging the centre portion of holder 12, Fig. 1 (not shown). It is stated the insertion may be used in a rotary switch (no details given).
Patent GB-535086-A (GB)
Title: Improvements in and relating to amplifying systems for modulated high-frequency currents
IPC: H03F1/07
Filed: 1939-11-06
Abstract: 535,086. Valve amplifying circuits ; wireless transmitting systems. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 6, 1939, No. 29500. Convention date, Nov. 5, 1938. [Class 40 (v)] Modulated-wave amplifiers for radio transmission, of the kind in which the steady carrier together with the troughs of modulation are handled in one channel and the peaks of modulation in a second channel, are modified by arranging floating carrier control for the first channel. As shown in Fig. 4 the modulated wave passes from an amplifier A to two valves VI, V2 the grids of which are biassed by rectifiers P1, P2 and the plate circuits supplied by rectifiers HT1, HT2, the outputs of the two valves being combined in the aerial circuit. The rectifiers for the valve V2 are supplied directly by A.C. mains, while the supply for the rectifiers for valve VI passes through the windings of a saturable: inductance S. The modulating voltage LF is fed to a rectifier DS the output of which varies at syllabic: frequency and is fed through a winding on the coil S, the inductance of which is thus varied according to the modulation strength. The power output of the valve V1 is thus reduced during periods of weak or no modulation, whilst the output of the valve V2 is left unchanged. The supply rectifiers may be of the gridcontrolled mercury vapour or other type, or may be replaced by a generator G, Fig. 5, the field coil D of which is in series with a pentode valve V3 acting as a variable resistance under the control of a fixed bias voltage U1 and a variable bias voltage derived from the modulation rectifier DS. A further bias voltage may be derived from a resistance across the generator terminals, with the object of giving a more rapid initial action when the modulation strength changes, Fig. 6 (not shown).
Patent GB-860532-A (GB)
Title: Improvements in or relating to radio aerials
IPC: H01Q5/321
Filed: 1956-09-27
Abstract: 860,532. Aerials. DIGBY, H. A. Dec. 20, 1957 [Sept. 27, 1956], No. 29543/56. Class 40 (7). An aerial for the reception of signals in two bands of frequencies consists of two circular and parallel loops of conductive tubing. One of the loops 1 has a narrow gap 3 in it aligned with a similar gap 4 in the other loop 2 and the loops are joined by parallel conductive links 6, 7 running between corresponding ends of the loops. The loop 2 is also provided with a second gap 5 diametrically opposite the gap 4 to the two sides of which the aerial feeder 8 is connected. The circumference of the loops is made such that the overall length of the aerial elements is an odd number of half-wavelengths at a frequency in the higher frequency band and also such that the aerial can be tuned to be a half or quarter-wave dipole for frequencies in the lower frequency band. If the links 6, 7 are made flat as shown, they may comprise an air dielectric capacitor of a large enough value to effect the tuning. An auxiliary tuning capacitor 10 may have to be used, however, or in some cases, a tuning inductance. In constructing the aerial the loops may be spaced by insulating pillars arranged at intervals and the whole assembly mounted on an insulating base or a bracket. A resistor connected across the links may be included to broaden the tuning.
Patent GB-210503-A (GB)
Title: Improvements in and relating to trap-nests for poultry
IPC: A01K31/16
Filed: 1922-10-30
Abstract: 210,503. Smyth, G. L. Oct. 30, 1922. Trap nests.-A trap nest for poultry comprises a sliding door 2 in which is pivoted a heavy-ended catch 9 coacting with a toothed plate 3, fixed to the frame 11. When the door is lifted the pivoted catch falls clear and allows the door to close upon elastic buffers 20. The plate 3 may be arranged on the door and the pivoted catch on the frame. The movement of the catch islimited by a stop 14 or by a plate covering thepivot and having a sector-shaped recess in which the catch moves. The door 2 may be held in. an inoperative position by the engagement of the catch 9 with the top of the plate 3. According to the Provisional Specification, the plate 3 may be replaced by a stop adjustable in a vertical' slot.
Patent GB-1340989-A (GB)
Title: Colostomy ilestomy or uretherostomy bag
IPC: A61F5/443
Filed: 1972-06-23
Abstract: 1340989 Discharge collecting appliances A BRONDBERG 23 June 1972 [30 June 1971] 29596/72 Heading A5R A colostomy, ileostomy, or ureterostomy bag comprises an adhesive disc 2 welded to the wall 1 of the bag of an annular zone 3 around the hole 4 and additionally welded to the bag wall along a curved seam 5. Alternatively straight seams (10, 11), and a peripheral seam (9), Fig. 2 (not shown), may be provided.
Patent GB-612094-A (GB)
Title: Improvements in or relating to panic bolts and like fastening devices for doors and other closure members
IPC: E05B63/20
Filed: 1946-10-04
Abstract: 612,094. Emergency exit bolts. ADAMS, Ltd., A. W., and KEARNEY, A. R. Oct. 4, 1946, No. 29632. [Class 44] The vertically sliding, spring-loaded bolt 1 of a panic bolt is retained in the withdrawn position when the door is open by a pivoted gravity catch 12, arranged to be tripped automatically as the door closes, thus releasing the bolt to secure the door. The bolt 1 is provided with a collar 9 against the underside of which acts a spring 8 contained in a housing 6 secured to the door. The gravity catch 12 is pivoted at 13 on either side of the housing and arranged, when the bolt is withdrawn to drop into the retaining position shown engaging the collar 9. As the door closes, two horns 16 on the catch are engaged by lugs 5 fixed to the socket member 3 and turned to the inoperative position. The catch 12 may comprise a pair of cam-shaped parts passing through slots in the housing and joined on the outside by a cross-bar 15 which acts as a limit stop.
Patent GB-709365-A (GB)
Title: Improvements in or relating to drill assemblies
IPC: E21B10/34
Filed: 1952-11-24
Abstract: 709,365. Drill assemblies. STANDARD OIL DEVELOPMENT CO. Nov. 24, 1952. [Jan. 29, 1952], No. 29689/52. Class 85 A drilling assembly comprises a tubular collar 1, which is secured to the lower end of a rotatable string of drill pipe or casing and has internally formed circumferential grooves, 2, 4, and a drill unit which can pass through the bores of the drill string and collar. The drill unit consists of a tubular mandrel 6 on which are pivotally mounted spring-biased latches 22 and cutter supports 11, 12. A sleeve 9 slidably fits over the lower portion of the mandrel, being biased towards the lower end thereof by a spring 7, and has spring-biased latches 25 and a pair of downwardly extending cutter supports 15 spaced apart at the lower ends by a wedge 17. A second sleeve 20 slidably fits over the upper portion of the mandrel and in one position slots formed in said sleeve register with the latches 22 to permit outward movement of the latter. In use, the drill unit is lowered through the drill string by a wire attached to a spearhead 21 of the sleeve 20 which supports the mandrel 6, since the extensions of the latches 22 are now contained in recesses formed in the mandrel by the sleeve 20 as they engage the lower surface of the slots in said sleeve. As the drill unit reaches the collar 2 latches 25 extend outwards into the groove 4 to abut against shoulder 5 and so prevent further downward movement of the sleeve 9 which, up to this point, has been previously supported on a shoulder of the mandrel. The mandrel continues downwards until prevented on the cutter supports engaging the wedge 17 by which they are forced into a drilling position. The sleeve 20 then descends with respect to the mandrel until latches 22 project through slots in said sleeve and enter groove 2 to abut against shoulder 3, when the weight of the drill string is transferred on to the cutters. Rotary motion is transmitted from the string to the bits by lugs in the groove 2 engaging the latches 22. The tool can be removed by re-attaching the line to the spear head and hauling up the sleeve 20, so causing the withdrawal of the latches 22 from the groove 2, whilst latches 25 ensure relative movement of the mandrel and sleeve 9 to free the cutter supports 11, 12 from the wedge 17 so that the whole drill unit may now be withdrawn. A packer 38 is provided on the mandrel and is forced into contact with the collar 2 on the descent of the sleeve 20. The grooves 2 and 4 may be combined into a suitably proportioned single groove. In a modification, to permit of controlled free falling of the drill unit, the upper portion of the mandrel bore is enlarged to house a valve controlling the upward flow of fluid through the bore. If the rate of fall of the drill unit is too high the valve closes the bore and the resultant pressure build-up therein acts through ports in the mandrel to expand a resilient sleeve against the casing string to exert a braking force.
Patent GB-298946-A (GB)
Title: Process of colouring horn masses
IPC: C08L91/00
Filed: 1928-10-15
Abstract: 298,946. Oexmann, H. Oct. 17, 1927, [Convention date]. Horn, treatment of.-The colouring applied to horn is rendered more durable by the. use of formaldehyde, or its polymers either added to the dye or applied separately to the horn.