baber/WOPTO huggingface dataset:
Patent GB-184367-A (GB)
Title: Improvements relating to electric switches
IPC: H01H83/08
Filed: 1921-08-04
Abstract: 184,367. C. L. I. Manufacturing Co., Ltd., and Watson, E. A. Aug. 4, 1921. Electrically tripped switches.-An electromagnetic cut-out for use, for example, in the installations of motor vehicles comprises a permanent magnet b, yokes a, a movable switch-operating armature f and a fixed core c, with air-gaps or their equivalent e, carrying a coil d. The fixed contact is at g and a resistance of large temperature-coefficient i shunts the coil d to introduce a time lag. When the armature f is pressed into contact, the magnet holds it, and current from the coil d reinforces the holding-on action. But a reverse current diminishes the flux through the armature, without demagnetizing the magnet b, and the circuit is broken by the spring h. Specifications 695/00 and 5513/07 are referred to.
Patent GB-848067-A (GB)
Title: Polymerization process and product
IPC: C08F4/64
Filed: 1956-10-17
Abstract: Polybutadiene is prepared from the monomer using a catalyst comprising a complex hydride MAIH4 (M = alkali metal, preferably Li) and Ti I4; the presence of an inert hydrocarbon diluent is preferred. In obtaining the polymers, an antioxidant such as phenyl-beta-naphthylamine may be used, and purification may be effected by means of an alcohol, e.g. isopropyl alcohol.  The polymers are stated to be rubbery, and a polybutadiene having 70-90% trans-1:4 and not more than 10% 1:2, the butane being cis-1:4 addition, is claimed.ALSO:A catalyst for polymerizing butadiene comprises (a) MalH4, wherein M is Na, K, Rb, Cs or (preferably) Li, and (b) TiI4.  Preferably, (1) use is made of an inert diluent, e.g. benzene, toluene, xylene, ethylbenzene or paraffins with up to 10 carbon atoms, in mixing the constituents and in subsequent polymerization, (2) the MAlH4 is added to a solvent before use, e.g. a dialkyl ether such as diethyl ether or a cyclic ether such as dioxane or tetrahydrofuran; (3) the catalyst is aged before use at about 30-100 DEG C. for about 10 minutes-24 hours.
Patent GB-583430-A (GB)
Title: Improvements in or relating to suction cleaners
IPC: A47L5/34
Filed: 1944-10-26
Abstract: 583,430. Suction cleaners. HOOVER, Ltd. (Hoover Co.). Oct. 26, 1944, No. 20856. [Class 8(i)] Semi-automatic mechanism for adjusting nozzle-height in suction cleaners as described in Specifications 494,265 and 506,513 comprises a series of abutments integral with one of the parts between which adjustment is required, and an operating member pivoted to the other part carrying a surface which after the nozzle, has been released is brought into engagement with one or other of the abutments, and thereafter moves and maintains the nozzle at a predetermined height. The abutments may take the form of teeth E<1>, Fig. 3, on the edge of a sector plate E secured to a cranked wheelcarrying axle C' having a spring urging the nozzle upwardly. Normally the teeth engage a stud G<2> at one end of a link G pivoted at G' to an operating member F provided with a pedal F<2> and pivoted to the nozzle at F<1>. On depressing the pedal against the tension of a spring H which normally holds the link G against the sector plate E the nozzle assumes its working position in relation to the wheels C, and on allowing the pedal to rise the stud G<2> engages the appropriate teeth of the sector plate. In an alternative construction, Fig. 5, the adjustment is performed on the rear wheel K to which is pivoted a cam surface M' attached a pedal M<1> and spring-urged against a series of abutment studs L<1> carried by a bracket L integral with the nozzle. A spring K<2> urges the rear part of the nozzle upwardly by an amount limited by a detent K' and a stop A<1>.
Patent GB-980497-A (GB)
Title: A slide mount
IPC: G03B21/64
Filed: 1962-05-30
Abstract: 980,497. Slide mounts. E. I. DU PONT DE NEMOURS & CO. May 30,1962 [June 7, 1961], No. 20894/62. Heading G2C. A slide mount comprises flat coacting frame  and cover members each having a centrally disposed opening, at least one being opaque and at least one having in its inner surface a recess of greater dimensions than the central opening suitable to receive the transparency, one member having a plurality of projecting thermoplastic pins some of which are near the recess while others are near the outer edge, and the other member having corresponding holes. The outside of the holes may have countersuck areas so that the end of the pin projecting therethrough can be heat softened to fill the counter sunk area and from a rivet. The cover member may be smaller than, and fit within a ridge on, the frame member. One member may be dark coloured and the other light coloured or transparent. In the Figures a transparency 10 is mounted within frame member 1, having aperture 2, recess 5, ridge 8 and thermoplastic pins 6 and 7, and cover member 3 having aperture 4, recess 9 and holes 6<SP>1</SP> and 7<SP>1</SP>.
Patent GB-1299077-A (GB)
Title: Improvements relating to solid state circuit packages
Inventor: JONES HENRY SAMUEL COURTNEY EL
IPC: H01L23/495
Filed: 1969-04-24
Abstract: 1299077 Lead frames for semi-conductor devices C BRANDAUER & CO Ltd 14 April 1970 [24 April 1969] 20907/69 Heading H1K A lead frame for a solid state circuit includes an outer rim 9 with at least one lead strip 15 extending inwardly therefrom, the strip 15 including a portion 17 having parallel longitudinal edges and a neck portion 19 joining the portion 17 to the rim 9 and having a longitudinal edge 20 which joins and includes an obtuse angle with one of the edges of the portion 17 and which also intersects the produced median line 22 of the portion 17 at an acute included angle 23. The angle- 23 is preferably 25-30 degrees, and the neck portion 19 of the strip 15 is ultimately severed from the lead frame along a line 26 which includes an angle of 50- 60 degrees with the edge 20 of the neck portion 19. An alternative shape for the neck portion 19 is disclosed.
Patent GB-127203-A (GB)
Title: Improvements in Dividers, Callipers and the like Instruments.
Inventor: MILLER JOHN HENRY KEELEY
IPC: G01B3/16
Filed: 1918-12-16
Abstract: 127,203. Miller, J. H. K. Dec. 16, 1918. Dividers.-The legs a and bow b of spring dividers or callipers are formed from a single piece of wire, the legs being formed with loops c to receive the bolt d and nut c for adjustment. The bow b may be fitted with a rubber or like eyelet f. Lock-nuts may be fitted on the bolt d.
Patent GB-444155-A (GB)
Title: Improvements relating to the moulding of monumental plinths or foundations
IPC: E04H13/00
Filed: 1935-07-24
Abstract: 444,155. Monuments. GILMAN, A., 319, City Road, Sheffield. July 24, 1935, No. 20991. [Class 20 (i)] [See also Group V] Monmnental plinths or foundations are moulded from reinforced terrazzo, concrete, and artificial stone in one piece in the form of rectangular frames with perpendicular sides and ends, the top surfaces of which serve for mounting the headstone, footstone, curbs and pillars of the monument. The plinth may be formed with an overlapping flange all round, as in Fig. 8, or with enlarged corners, Fig. 7. In another form, Fig. 10, flanges are provided at the four corners and also lugs are formed at the centres of the four sides. These not only support the memorial but also provide support for two inside covering slabs for the grave. For use on sloping ground, one plinth may be placed on another which need not be of the same size.
Patent GB-1065144-A (GB)
Title: Improvements in packaging machines
IPC: B65B9/20
Filed: 1964-05-21
Abstract: 1,065,144. Packaging machines. SPERRY RAND CORPORATION. May 21, 1964 [May 21, 1963], No. 21002/64. Heading B8C. A machine for making bags from a continuous web formed into a tube on a former 4, and sealed transversely by jaws 38, 32, weighed quantities of material 132 being cyclically supplied to the tube, has means 94, 88 for stripping the fragments of material from the region to be sealed, deflating means 124 for squeezing out air which tends to be trapped in the bags, and closure blades 116 for supporting the next charge of material while the jaws operate. The tube is formed from a web 6 pulled downwardly through the former 4 by vertically reciprocating jaws 38, 32 carried by beams 20 and edge-sealed by means 8. Attached to each beam 20 is a stripper member 94, 88 and these members close together around the tube, before the sealing jaws close. Material from the charge 134 in the region to be sealed is thus forced downwardly during the initial downward movement of the beams 20. The next charge 132 is prevented from falling in the tube by the pivoted closure blades 116. At the same time rods 122 pivoted to beams 20 at pivots 123, and having curved plates 124, are released from fixed stops 130 and swing inwards and downwards under gravity and press the sides of the bag together, expelling excess air upwardly between small vents between the stripper plates 94, 88 and the closure blades 116. Pressure fluid is then admitted to cylinders (34, Fig. 3) to project sealing jaws 38 towards fixed jaws 32 to heat-seal the tube transversely. The closed blades 116 are then opened allowing the material 132 to fall. The jaws then pull down more bag material for the next cycle and the previously formed bag 134 is severed. With the jaws and strippers separated they are moved to their initial uppermost position to commence the next cycle. The sealing jaws and associated members are cyclically raised by a chain (48, Fig. 1) passing over a sprocket wheel (42, Fig. 1) and operated by a crank arm (52, Fig. 1) and are sufficiently heavy to pull the web down under gravity. The sealing jaws are moved horizontally by links (30, Fig. 4) pivoted to a disc (28, Fig. 4) oscillated by a vertical square shaft (22, Fig. 4) driven by a chain (70, Fig. 1) and lever (76, Fig. 1) geared to the crank arm (52, Fig. 1). The mechanism is duplicated so that two bags are made, filled and sealed simultaneously.
Patent GB-787204-A (GB)
Title: Improvements in and relating to the control of electric heating circuits
IPC: G05D23/24
Filed: 1955-07-20
Abstract: 787,204. Electric cookers. GENERAL ELECTRIC CO. July 20, 1955 [July 26, 1954], No. 21033/55. Class 39(3) [Also in Group XXXV] A hotplate for an electric cooker comprises a metal-sheathed helical element 25 having inner and outer portions supported on radial spider arms such as 24. The spider supports a central ring 26 carrying a highly-polished cylindrical heat shield 29 and a pair of depending members 28 by means of rivets 30. The members 28 support through bolts 35 the two halves of a lava housing 32. split by an asbestos disc 34. The upper portion of housing 32 slidably supports a metal tube 37 on a ring 40, whereby an aluminium button 45 mounted in a lava block 39 fast with tube 37 may be biased by a spring 46 against the base of a cooking vessel placed on the hot plate. The block 39 supports a further cylindrical polished heat shield 42 flared at its lower end, whereby a thermistor 47 mounted in the button 45 responds only to the temperature of the vessel. Heatinsulated silver leads pass from thermistor 47 through a hole 33 in member 32, and thence to a temperature controlling means (see Group XXXV). The inner and outer portions of the heater-element are energized with A.C., and are successively put in circuit to minimize the arcing which might result from connecting the whole load through a single pair of contacts.
Patent GB-597374-A (GB)
Title: Improvements in devices for moistening tape and other articles or objects
IPC: B43M11/00
Filed: 1945-08-17
Abstract: A device for moistening tape and other articles comprises a container for the moistening liquid and an applicator for applying moistening liquid from the container to the article, the applicator consisting of a rectangular block of narrow thickness having a capillary slot or slots extending from top to bottom and being arranged in an upright position in the container.  The block is a solid slotted body or a body built up of thin plates with spacing means therebe <PICT:0597374/III/1> <PICT:0597374/III/2> tween, while more than one applicator may be used.  Fig. 1 indicates a reservoir 1 containing an applicator 2 with capillary duct 3 and tapered top 4.  In Fig. 3, there are shown two applicators separated by division 17. Specification 25540/05, [Class 95], is referred to.
Patent GB-1136881-A (GB)
Title: Vapour growth of silicon crystals and apparatus for producing the same
IPC: C30B25/02
Filed: 1966-05-12
Abstract: 1,136,881. Thermal reduction of silicon compounds. WESTINGHOUSE ELECTRIC CORP. 12 May, 1966 [26 May, 1965], No. 21045/66. Heading C1A. [Also in Divisions C7 and H5] Apparatus 100 for depositing Si on a substrate e.g. of silicon by thermal decomposition comprises a reaction chamber 104 containing a heater strip 136 having a core 137 of conductive material coated first with a silicide of a constituent of the core material and then with Si, the strip supporting the substrate. The core is of C, Mo, W, Ta or an alloy thereof. The core may be coated by heating in H 2  to clean the surfaces, maintaining the temperature and introducing H 2  and a halogenated silane, e.g. SiCl 4 , HSi C1 3 , SiH 2 Cl 2 , or SiI 4 , to deposit Si which reacts with the core to form the silicide layer, finally reducing the temperature when Si is deposited. Two cores 137, 139 are mounted in the chamber 104 connected together by a bridging strip 140 and to an A.C. or D.C. supply through electrodes 112, 128 and 114, 130 mounted in a water cooled Ag plated brass base 102 supporting the vessel 104. Gas inlet and outlet tubes 148, 152 pass into the vessel and a screen 154 minimizes contamination from metal parts of the apparatus adjacent the base. The cores and strip 140 are coated in situ and single crystal P or N type Si substrate placed on the heaters. The substrates are heated in H 2  to clean their surfaces and then in H 2  and HSi C1 3  to deposit epitaxial layers of Si, dopants e.g. BBr 3  may be introduced into the gas. During deposition the Si coating of the heater is transferred to the substrate and the heater is reused after etching with HC1 to remove all the Si and recoating with Si. The coated substrate forms a diode.
Patent GB-749085-A (GB)
Title: Improvements in textile combing and other machines
Inventor: NUTTER WALTER
IPC: D01H5/22
Filed: 1953-07-29
Abstract: 749,085. Spinning yarns; roller arrangements in textile spinning &c. machines. T.M.M. (RESEARCH), Ltd. April 6, 1954 [July 29, 1953], No. 21052/53. Classes 120 (2) and 120 (3). Periodic irregularities of thickness in textile slivers are eliminated by drafting the slivers simultaneously and in a single operation by passage in side by side relationship through a pair of feed rolls and a succeeding pair of draft rolls and combining the drawn slivers into a single output sliver. In the rectilinear combing machine draw-box shown in Fig. 1, feed rolls 12 and 13 and draft rolls 14 and 15, the lower of which are separately driven through gearing at differential speeds; Fig. 2 (not shown), are mounted between vertical guides formed by slots, as at 16, in side frames, as at 10, to permit movement as demanded by varying thickness of the slivers which are fed along the plate 17 and delivered through a funnel 18 by which they are combined as an output sliver before passage between calender rolls 19 and 20. The rolls 13 and 15 are loaded by spring-pressed plungers 23, 24, bearing on their arbors and carried on a pivoted frame 21 locking catches, as at 25, for which are releasable by means of a handle 27 rotating a rod 26. The rolls 12, 13, are mounted in members, as at 101, which are slidable on the side frames to permit adjustment of the distance between the nips of the roller pairs. In a draw-frame, Fig. 3 (not shown), comprising a roller-stand on which are mounted assisting rollers, and pairs of feed rolls and draft rolls, the former two sets of rolls are mounted in slidable bearing blocks to allow adjustment of the relative position of the rolls according to the staple length of the fibre under treatment.
Patent GB-662206-A (GB)
Title: Improvements in or relating to billiards cue tips
IPC: A63D15/12
Filed: 1949-08-13
Abstract: 662,206. Billiards. ROBINSON, H. H. Aug. 8, 1950 [Aug. 13, 1949], No. 21093/49. Drawings to Specification. Class 132 (ii). A hollow billiard cue tip is filled with gas, spongy rubber or other resilient medium. The tip is formed of a base and a top. Liquefied or solidified gas is placed on the base and the top is applied to the base, the gas being generated by the application of heat.
Patent GB-316761-A (GB)
Title: Manufacture of a condensation product of ª‡-naphthylamine and acetaldehyde and the application thereof in the manufacture of vulcanised rubber
IPC: C08K5/18
Filed: 1928-07-20
Abstract: 316,761. Clayton Aniline Co., Ltd., and Robinson, R. July 20, 1928. Acetaldehyde - alpha - naphthylamine condensation product.-A product having anti-ageing properties when used in vulcanizing india-rubber is prepared by condensing 1 mol. of a-naphthylamine with 2 mols. of acetaldehyde, preferably in the presence of an indifferent solvent. An example is given in which the condensation is conducted in methylated spirit. Specification 280,661 is referred to.
Patent GB-372630-A (GB)
Title: Improvements in or relating to combustion chambers
IPC: F02B23/00
Filed: 1931-07-23
Abstract: 372,630. Oil engines. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. July 23, 1931, No. 21111. Convention date, July 25, 1930. [Class 7 (iii).] The compression space is made to conform to the shape of the fuel jet by shaping the cylinder head and piston crown in the manner shown in Figs. 1 and 4. The piston has a segmental flat portion bounded by a sectorshaped recess 5 and plane portions 12, 13 which slope downwardly to the circumferential edges of the piston.
Patent GB-707231-A (GB)
Title: Improvements in electrical signalling and control systems and apparatus
Inventor: MACKENZIE JOHN FRANCIS
IPC: H05B1/02
Filed: 1950-08-26
Abstract: 707,231. Thermal switches; partly electromagnetic switches. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. Aug. 14, 1951 [Aug. 26, 1950], No. 21149/50. Class 38(5) [Also in Groups XI, XXXV and XXXVIII] In an automatic control system for electric immersion heaters (see Groups XI, XXXV, and XXXVII), there are provided a bimetallic snap action switch with an auxiliary heater, and an electromagnetic relay with a thermally delayed release. The bimetallic switch consists of a differentially stressed E-shaped bimetallic spring 29, Fig. 2, the outer limbs of which are drawn slightly together and held on (but insulated from) two pillars 25. The stress is adjustable by eccentric bushes (not shown) to control the temperature at which the switch will open. The centre limb of the spring 29 carries a contact 30, Fig. 3, co-operating with a fixed contact 27 secured to a cross-member 26 also carried on (but insulated from) the pillars 25. The pillars are secured to the upper of two duralumin blocks 13, 14, Fig. 1, the lower block 13 being thermally connected to the hot water tank by a brass split pin 15. The pin is housed in a pocket in the tank. An electric heater 19 is embedded within the blocks and may be energized to hasten the opening of the contacts. The relay, Fig. 4, comprises two contact carrying springs 51, 52. Spring 51 is differentially stressed by being bifurcated at its free end, the two prongs being drawn towards each other and held by a cross bar 59. An electromagnet 64 is so placed that when energized, the spring 51 leaves its lower stop 61 and snaps upward to close the contacts, the upper spring coming to rest against a stop 63. The electromagnet 64 is (normally) then de-energized. Upon closure of the contacts, a circuit is completed to heat a carbon block 56. Spring 52, which is bimetallic, accordingly deflects downwards until the point is reached at which the spring 51 snaps downwards to open the contacts. In a modification, Fig. 5, a change over relay of the P.O. type includes as the middle spring 74 a differentially stressed member (as above) which contacts either a normal lower contacted spring 73, or a bimetallic upper contacted spring 75. The relay is initially operated by a normal electromagnet (not shown) and (as above) restored by the energization of a carbon block heater 76:
Patent GB-1027277-A (GB)
Title: Production of chlorinated hydrocarbons
IPC: B01J8/24
Filed: 1963-05-28
Abstract: Chlorinated hydrocarbons are prepared by reacting (a) aliphatic C1 to C4 hydrocarbons and/or their incompletely chlorinated derivatives, (b) oxygen and (c) chlorine and/or hydrogen chloride in a fluidized bed of oxychlorination catalyst particles which is maintained at elevated temperature and regulating the particle size distribution of the catalyst in the bed during the reaction to provide at least 90% by volume of catalyst particles ranging in size from 240 to 600 microns.  The particle size distribution may be maintained by recovering particles of 240 to 600 microns from the gases leaving the fluidized bed and recirculating these recovered particles, together with fresh catalyst particles as required, to the bed.  A preferred catalyst comprises particles of a calcined Fuller's earth impregnated with equi-molar preparations of copper chloride and potassium chloride.
Patent GB-756562-A (GB)
Title: Steroid ª -halo ketals
IPC: C07J75/00
Filed: 1953-07-31
Abstract: The invention comprises a 3-cyclic monoketal of a steroid 4-chloro or 4-bromo-3,20-dione, having a pregnane carbon skeleton, and the preparation thereof by mixing together an acid hydrolysing agent and a steroid 4-chloro or 4-bromo-3,20-dione 3,20-cyclic diketal having a pregnane skeleton to cause selective hydrolysis of the 20-cyclic ketal group to form a 20-ketone group.  As acid hydrolysing agents there may be used sulphuric, hydrochloric, m- and p-toluenesulphonic, naphthalenesulphonic, benzenesulphonic, o-chlorobenzenesulphonic, or trichloracetic acid.  The reaction may be effected between 0-100 DEG C. in a water-immiscible organic solvent, e.g. ether, benzene, chloroform, or hexane, or in a water-miscible solvent, e.g. acetone methanol, ethanol or dioxane.  The steroid 4-halo-3,20-dione products may subsequently be brominated to form the corresponding 21-bromo derivative followed by acetylation to produce the corresponding 21-acetoxy derivative.  Examples disclose the production of 4 - chloro - and 4 - bromo - 11b , 17a -dihydroxypregnane-3,20-dione 3-ethylene glycol ketals dihydroxypregnane-3,20-dione 3-ethyl glycol ketal, 4-chloro- and 4-bromo-11b , 17a -dihydroxy - 21 - acetoxypregnane - 3,20 - dione 3-ethylene glycol ketal, 4-chloro- and 4-bromo-11b , 17a , 21-trihydroxypregnane-3,20-dione 3-ethylene glycol ketal, 4-chloro- and 4-bromo-17a  - hydroxypregnane - 3,11,20 - trione 3-ethylene glycol ketal and 4-chloro-17a -hydroxy-21 - acetoxy - pregnane - 3,11,20 - trione 3-ethylene glycol ketal.  Other products are mentioned in which the 3-ketal group is derived from an alkane-1,2-diol or alkane-1,3-diol containing up to eight carbon atoms.  Specification 737,957 is referred to.  In addition the preparation of the following compounds is described:-  4 - Chloro - 17a  - hydroxypregnane - 3,11,20-trione is obtained by treating 3a , 17a -dihydroxypregnane - 11,20 - dione with tertiary butyl hypochlorite.  4-Bromo- and 4-chloro-17a , 21-dihydroxy-pregnane-3,11,20-trione 3,20-ethylene glycol diketals are obtained from 4-chloro-17a -hydroxy-pregnane - 3,11,20 - trione 3,20 - ethylene glycol diketal by the method described in Specification 737,957. Similarly 4-bromo- and 4 - chloro - 17a  - hydroxy - 21 - acetoxy-pregnane - 3,11,20 - trione 3,20 - ethylene glycol diketals, 4-bromo and chloro-11b , 17a -dihydroxy-21-acetoxy-3,20-dione 3,20-ethylene glycol diketals, and 4-bromo and 4-chloro-11b ,17a ,21-trihydroxypregnane-3,20-dione 3,20-ethylene glycol diketals are obtained.  4 - Chloro - 21 - bromo - 11b ,17a  - dihydroxy-pregnane-3,20-dione 3-ethylene glycol ketal is obtained by treating 4 - chloro - 11b ,17a -dihydroxypregnane-3,20 - dione 3,20-ethylene glycol diketal with bromine.