baber/WOPTO huggingface dataset:
Patent GB-1237821-A (GB)
Title: Appartus for handling articles
IPC: B42C19/08
Filed: 1969-05-09
Abstract: 1,237,821. Conveyers. MIEHLE-GOSSDEXTER Inc. 9 May, 1969 [24 Sept., 1968], No. 23844/69. Heading B8A. Book bodies 11 deposited end-to-end or in spaced relationship on a conveyer belt 12 are transferred in sets of two, to a second conveyer belt 30 by driven escapement wheels 17. The belt 30 forms part of a book pick-up station 16 wherein stops 109, 110 are movable to arrest, and accurately space, the two books, the wheels 17 and the belt 30 being driven at an appreciably higher speed than the belt 12. The station 16 also includes a reciprocable carriage consisting of slides 39 having clamps 40 with gripper pads 240, the slides extending through subsequent stations (not shown) of book-forming apparatus. The books, while on the belt 10, are guided by trough-like guides (55, 56), Fig. 14 (not shown), and, when on the belt (30), are engaged by inverted U-shaped guides (166) mounted on sub-frames (159), Fig. 16 (not shown). Tensioning means are provided for both belts. Fig. 18 shows how a motor 19 drives the belts 12, 30, the escapement wheels 17, a crank 35, and a cam 44. The crank 35, by means of a composite cam 36 and linkage 37, Fig. 10, causes longitudinal reciprocation of the two slides 39. The cam 44, by means 41, 42 and linkage 45, causes clamps 40 to be closed after receiving books when the slides 39 are to the left of the station 16 and to be opened after the books have been carried to the right of the station. The conveyer belts 12, 30 are mounted on two connected sub-frames 54, 82 which are simultaneously adjustable vertically to accommodate books of different widths. Books of different thicknesses are accommodated by adjustable sub-frames 159 for the slides 39 and by adjustably mounting the vertical shafts 64 on which the escapement wheels 17 are supported. The book stops 109, 110 are adjustable longitudinally for handling books having differing heights and are movable into their operative or retracted positions by air cylinders 111. Control of the apparatus, including a clutchbrake 20 in the drive to the escapement wheels 17, is by a photo-electric cell 25 for detecting the books and by a switch unit 325 (Fig. 18) which comprises switch cams driven in synchronism with the main motor-driven shaft 18.
Patent GB-1016811-A (GB)
Title: Improvements in or relating to artificial cardiac and aortic valves
IPC: A61F2/24
Filed: 1964-06-09
Abstract: 1,016,811. Artificial heart valves. PRESNA MECHANIKA NORODNI PODNIK. June 9,1964 [June 10, 1963], No.23936/64. Heading A5R. [Also in Division F2] An artificial cardiac or aortic valve comprises a porous plastics ring 1 as a valve seat, a cone 2 as valve closing means, cooperating with ring 1 and stops on said ring to limit the movement of the cone with respect to the ring. The stops may take the form of U-shaped wires 3 which engage the bottom of the cone 2 or, as in Fig. 3, not shown, engage a rod terminated by a cap, extending from the top of the cone. The ring 1 may be provided with openings 5 for sewing the ring to the surrounding tissues, and with conically shaped ring 4 to prevent the tissues of the heart interfering with the action of the cone. The cone 2 may be provided with reinforcing metal insert 6.
Patent GB-660197-A (GB)
Title: Alkyl-mercaptoalkanoates of hydroxylated hormones
IPC: C07J31/00
Filed: 1948-09-13
Abstract: Esters of hydroxylated hormones of the cyclopentanophenanthrene and stilboestrol series are prepared by reacting the hormone in the presence of a base with an alkylmercaptoalkanoyl halide having the general formula R-S-X-CO-Y where R is an alkyl group containing one to four carbon atoms, X is an alkylene group containing one to three carbon atoms and Y is a halogen, or with an alkylmercaptoalkanoic anhydride of the general formula (R-S-X-CO)2O where R and X are as above defined. Hormones mentioned include testosterone, oestradiol, oestrone, stilboestrol and desoxycorticosterone.  Esters mentioned include the methylmercaptoacetate, ethylmercaptoacetate, n - propylmercaptoacetate, n - butylmercaptoacetate, 3 - (2 - propylmercapto) - propanoate, 4 - (n - propylmercapto) - butanoate, 2 - methylmercaptopropanoate, 2 - ethylmercaptobutanoate, and the 3-(n-propylmercapto)-butanoate. The preferred basic agents are pyridine and fused potassium acetate.  Examples are given of the production of the following compounds and their physical constants recorded.  (1) Testosterone alkylmercaptoalkanoates: the 2-methyl mercaptopropanoate, ethylmercaptoacetate, 2-ethyl - mercaptopropanoate, methylmercaptoacetate, n - propylmercaptoacetate, (2 - propyl) - mercaptoacetate, n - butylmercaptoacetate, 3 - methylmercaptopropanoate, 2-methylmercaptobutanoate, 4-methylmercaptobutanoate and 4-n-propylmercaptobutanoate.  (2) Stilboestrol alkylmercaptoalkanoates: the bis-(ethylmercaptoacetate). The alkylmercaptoalkanoic acids used as intermediate compounds may be obtained by either (a) the alkylation of a mercaptoalkanoic acid, or (b) the treatment of a haloalkanoic acid, or a haloalkanenitrile with an alkanethiol under alkaline conditions. Procedure (a) is illustrated by the interaction of dimethyl sulphate and 2-mercaptopropanoic acid in the presence sodium hydroxide to give 2-methylmercaptopropanoic acid, and procedure (b) by the interaction of methanethiol and 2-bromobutanoic acid in the presence of sodium hydroxide to give 2-methylmercaptobutanoic acid, and 1-propanethiol and 4-chlorobutanenitrile to give 4-n-propylmercaptobutanoic acid. Other compounds mentioned include n-propylmercaptoacetic acid, (2-propyl)-mercaptoacetic acid, and n-butylmercaptoacetic acid.  The alkylmercaptoalkanoic acid halides are prepared from the corresponding alkylmercaptoalkanoic acids and (a) either thionyl chloride, or (b) phosphorus trichloride.  The preparation of n-propylmercaptoacetyl chloride by method (a) is described and the preparation of 2-methylmercaptobutanoyl chloride by method (b). p Ethylmercaptoacetic anhydride is prepared by refluxing ethylmercaptoacetic acid and acetic anhydride.
Patent GB-1397262-A (GB)
Title: Optical apparatus
IPC: G02B23/16
Filed: 1972-05-22
Abstract: 1397262 Optical alignment apparatus FRANCE ARMED FORCES MINISTER OF 22 May 1972 [26 May 1971] 24033/72 Heading G2J  An object O is viewed at V, via reflector S, and superposed on a marker projected from C. The latter is fast to, and parallel to, a radiation viewing device G. The optical arrangement of a semireflecting surface S and the two mutually perpendicular surfaces straddling angle T of the roof-prism mitigates against slight misalignment of the apparatus. In Fig.4 (not shown) the two surfaces of the roof-prism are replaced by a plane reflector and the third reflective surface is formed by one side of a Wollaston prism (W). In Fig.5 (not shown) two parallel semi-reflecting surfaces (L, L<SP>1</SP>) are substituted for S.
Patent GB-770632-A (GB)
Title: Elastic, semi-rigid and rigid foams and process of producing the same from polyisocyanate-modified polyesters
IPC: C08J9/00
Filed: 1954-08-18
Abstract: Foams are made by reacting a polyester containing a plurality of hydroxyl and/or carboxyl groups with an organic polyisocyanate in presence of an organic compound containing an uninterrupted chain of at least 10 consecutive carbon atoms and at least one sulphate and/or sulphonate group.  Many polyesterforming reactants and polyisocyanates are referred to.  Specified sulphated and sulphonated compounds are the alkali metal salts of sulphonated or sulphated fatty acids or their glycerides, sulphated fatty alcohols, the alkali metal salts of sulphochlorinated hydrocarbons and the alkali metal salts of sulphonated alkylated aromatic hydrocarbons.  Foaming is preferably effected in presence of an activator such as a tertiary amine (e.g. hexahydrodimethylaniline), an ester-amine (e.g. that derived from adipic acid and N-diethyl- or dipropyl-ethanolamine), an alkali metal phenolate, or a lactam of an omega-amino-carboxylic acid (e.g. omegaaminocaproic acid lactam).  In Examples, foams are made from mixtures comprising (1)-(3) a polyester derived from adipic acid, phthalic acid and glycerol (or hexanetriol or trimethylol propane), a polyester derived from adipic acid, phthalic acid and butylene glycol, siliceous chalk, tolylene diisocyanate and an activator mixture comprising (a) turkey red oil, water and an esteramine derived from N-diethanolamine and adipic acid or (b) the sodium or potassium salt of sulphated oleic or linoleic acid, water and hexahydrodimethylaniline.  (4)-(6) A polyester derived from phthalic acid, adipic acid and butylene glycol, a polyester derived from adipic acid and diethylene glycol, siliceous chalk, trichloroethyl phosphate, tolylene diisocyanate and an activator mixture comprising (a) the sodium salt of sulphated oleic acid, water, phenol and sodium phenolate with or without the sodium salt of sulphated linseed oil and the esteramine derived from N-diethylethanolamine and adipic acid or (b) the sodium salt of sulphated oleic acid, water, hexahydrodimethylaniline and sodium phenolate.  (7) A polyester derived from adipic acid, diethylene glycol and trimethylol propane, tolylene diisocyanate and an activator mixture comprising the sodium salt of sulphated oleic acid, water and the esteramine derived from adipic acid and diethylethanolamine.  (8) A polyester derived from adipic acid, 1.3-butylene glycol and trimethylol propane (hydroxyl number 260, acid number 50), silicic chalk, toluylene diisocyanate, sulphonated castor oil and hexahydrodimethyl aniline.  The process substantially as described in Example 3 of Specification 770,631 is disclaimed.
Patent GB-996611-A (GB)
Title: Improvements in, or relating to, wall boxes for use in the flush-mounting of electrical accessories
Inventor: WAIN GERALD IVAN
IPC: H02G3/12
Filed: 1963-07-12
Abstract: 996,611. Switch cases. WANDSWORTH ELECTRICAL MANUFACTURING CO. Ltd. July 12, 1961 [July 12, 1960], No. 24202/60. Heading H2B. A grid 16 for carrying an accessory such as a switch 19 in a wall-box is adjustably supported by screws 14 engaging tapped holes in pillars 11 integral with the box and is locked in position by clamping screws 15 passing through the grid and engaging additional tapped holes in further pillars 11. The domed heads of screws 14 nest in plain holes 17 in two diagonally-opposed corners of the grid and are easily accessible for adjustment by a screwdriver. The frusto-conical heads of screws 15 are accommodated in countersunk holes 17a in the other two corners of grid 16 such that a cover plate (Fig. 3, not shown) seats flat upon the external grid surface.
Patent GB-1156439-A (GB)
Title: Improvements in or relating to Timing Circuit Arrangements
IPC: H03K17/28
Filed: 1968-05-22
Abstract: 1,156,439. Switching circuits. SIEMENS A.G. 22 May, 1968 [23 May, 1967], No. 24299/68. Heading H3T. This invention relates to an RC timing network controlling the operation of a transistor switching circuit, these being connected together via two oppositely poled diodes which effectively isolate one from the other. In Fig. 1, the timing network comprises resistors R1, R2, R3 and a capacitor C which has one terminal connected to an intermediate tapping MTB of the supply voltage and the other to a junction A. Junction A has a voltage level determined by the voltage divider R1, R2, R3 and this is sensed by the transistor T1 having its base connected to said point via oppositely poled diodes D2 and D3. Resistors R8, R9, R10 form a second potential divider connected across the supply, providing the negative bias to the base of T1 via resistor R4. Switch S connects the junction of R1 and R2 to either the positive or negative supply terminals via diode D1. When connected to +Ub, a charging current flows through R1 such that the potentials at A and E rise. When the potential of E is greater than that of D, D3 conducts, switching T1 on. Relay R is then operated by the cascade amplifier of transistors T2, T3. Fig. 3 (not shown) illustrates the use of a change-over switch such that when the relay has been activated, this switch reduces the resistance in the charging circuit of the capacitor such that the full potential is realised sooner. This prevents a pulse of short duration, which follows a very short time after a previous pulse, giving a shorter delay time between the finish of the pulse and the relay operation.
Patent GB-1532073-A (GB)
Title: Tower packing elements
IPC: B01D53/18
Filed: 1976-06-11
Abstract: 1532073 Packing element for fluid contact FRACTIONATION RESEARCH Ltd 8 June 1977 [11 June 1976] 24383/76 Heading B1R A tower packing element comprises a pair of curved strips 4 connected together at their respective ends to form a tubular member, with the planes of curvature of the strips generally coplanar, by a pair of generally co-planar bridge members 5 integral with the ends of the strips. Inwardly directed ribs 6 may be cut out from the walls of the member.
Patent GB-421910-A (GB)
Title: Improvements relating to electric clocks
IPC: G04C15/00
Filed: 1933-09-02
Abstract: 421,910. Electric clocks. DORER, P. O., c/o S. Smith & Sons, Cricklewood Works, Edgware Road, London. Sept. 2, 1933, No. 24408. [Class 139] In a clock driven directly by a self-starting synchronous motor in which a coloured plate h visible through a hole t in the dial indicates whether the motor is running or stopped, the hands e are set by depressing a knob b against the action of a spring f until a pinion c on the stem a meshes with a wheel d of the train, and then turning the knob as required. Normally the indicator plate h is in the dotted (running) position Fig. 2, and a white coloured portion thereof is displayed. Should the current supply fail however, the plate h drops to the position shown in full and displays a red portion thereof. When the current again becomes available, the motor starts and the hands are set as above, during which operation, a collar g on the stem a actuates a slidable rod i, Fig. 2, to rock the indicator to the " dotted " position where it is held magnetically by the stray flux from the motor passing between poles p holding an armature o rigid with the spindle m carrying the arm k. In another construction the spindle m, Fig. 4, carries the arm k, an arm n to which the armature o is attached, and a further arm r which is acted upon directly by the conical collar g for resetting the indicator. The indicator may be held in its normal position by a separate electromagnet.
Patent GB-759576-A (GB)
Title: Improvements in or relating to screw extrusion presses
IPC: B29C48/09
Filed: 1954-08-23
Abstract: 759,576. Screw extrusion presses. LORENIAN, Z. Aug. 23, 1954 [Aug. 29, 1953], No. 24452/54. Class 87(2) The delivery end of a hollow screw 7 is sealed by three members 1, 2, 3 which prevent plastic material getting inside the screw. Member 1 is annular in shape and is secured by a wedge or key 6 to the screw so as to rotate therewith, or it may be integral with the screw; this member has a radial sealing surface 10 which as shown includes a carbon insert 4. Member 2 also has a radial sealing surface 11 which bears against surface 10, the member being urged rearwardly by a spring 5; this member tapers forwardly and surrounds member 3. Member 3 may be the stationary cylinder in which works another screw (not shown), and is supported from the rear and/or front of the press. When the screw is working the member 2 is forced rearwardly to form a tight seal at 10, 11, and its forward end 14, which is flexible, is pressed against member 3 as shown. Member 2 may be free to turn or may be held against turning.
Patent GB-931134-A (GB)
Title: Improvements in clips for use in the construction of floors and the like
Inventor: MUDD DEREK PERCIVAL
IPC: E04C2/42
Filed: 1958-07-29
Abstract: 931,134. Clamps. LIONWELD Ltd. Oct. 29, 1959 [July 29, 1958], No. 24474/58. Class 44. A clamp for securing to a support a section of floor structure having a number of interconnected floor members 3 forming or carrying a tread surface, comprises a first member 1 which engages over a member 3, a second member 2 which at one end engages against or underneath a support 9 and at its other end engages under the floor member 3, and clamping means 5 for tightening the members together, one member having a guide element 4, in the form of a tongue which passes through an opening in the other member which serves to limit angular relative movement of the members. The generally U-shaped member 2 may have its limbs 11 bent outwardly to accommodate a larger flange 9a, or its sharp ends 11 may engage a flange. A nut 6 may be formed integral with member 2. Specification 755,104 is referred to.
Patent GB-1221669-A (GB)
Title: Process for preparing aluminium nitride
IPC: C01B21/072
Filed: 1968-05-22
Abstract: 1,221,669. Aluminium nitride. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 22 May, 1968 [24 May, 1967; 25 May, 1967], No. 24493/68. Heading C1A. Aluminium nitride is made by (i) vaporizing an aluminium halide 2, e.g. AlCl 3  and conveying the vapour to a heated reaction zone 4 by means of an inert carrier gas, e.g. N 2  where the halide is converted to the monohalide which is conveyed to a zone of lower temperature, e.g. 800-1100‹ C. where the monohalide disproportionates to form atomic aluminium; (ii) introducing gaseous NH 3 , e.g. from a bubbler 1 into the reaction zone 4 by means of the inert carrier gas where it is thermally decomposed into atomic nitrogen and hydrogen. The atomic N and Al combine in the zone of lower temperature to form AIN. The reaction may be carried out in a quartz tube 3 and the atomic nitrogen is preferably activated by a source of ultra-violet radiation 5.
Patent GB-635308-A (GB)
Title: Improvements in or relating to a frictional securing device
IPC: F16D41/069
Filed: 1947-09-05
Abstract: 635,308. Chucks. MICROMATIC HONE CORPORATION. Sept. 5, 1947, No. 24497. Convention date, Sept. 19, 1946. [Class 83 (iii)] [Also in Groups XXIV and XXXIV] A clutch or collet for frictionally securing against rotation a plain or tapered, cylindrical, elliptical or other shaped workpiece 31 comprises a stationary base member 13 and a concentric ring 17 the bore of which has a plurality of slots 21 housing radially inwardly extending spring fingers 19 secured by wedges 22. The ground ends of the spring fingers are complementary to the periphery of the workpiece 31 but form a bore of slightly smaller dimensions, whereby when deflected by the axial pins 25 of the member 17, the workpiece 3 may be inserted, and then gripped on release of the deflecting means. The pins 25 which are all positioned on the same side of the radial lines on which the spring fingers 19 are disposed, may, in a modification, positively guide same by being of such diameter as to engage adjacent sides of adjacent fingers, and, if necessary, force the workpiece into the desired shape. The member 17 is rotated by handles 23, or in a modification by a keyoperated pinion engaging an annular gear on the stationary member 13. Further modifications describe means for automatically releasing the fingers of a series of such devices mounted on a rotating work-table and for adapting the device to an over-running clutch.
Patent GB-253767-A (GB)
Title: Coil holder and coil for wireless apparatus
IPC: H01F27/00
Filed: 1925-10-02
Abstract: 253,767. Hansen, A. C. V. July 16, 1925, [Convention date]. Wireless tuning-apparatus, adjustment devices for; inductances.-A coil holder for wireless apparatus of the kind wherein the coil is grasped by two arms comprises a forked member provided with resilient arms which follow closely the periphery of the coil and engage conductive strips lying on the circumference thereof, the coil itself being completely enclosed in an insulating casing. As shown, the holder is provided with forked contact arms 11 which engage the coil 2 along conductive strips 3. The coil is housed in an insulating casing 1 secured by a hollow bolt 5, and coil units not in use may be hung on pegs engaging these bolts. Fixed and movable coils 13, 17 may be mounted together in frictional engagement by a spring 14 located between them, the movable coil being pivoted on the bolt 15.
Patent GB-1104037-A (GB)
Title: Improvements in or relating to coin operated locks
Inventor: JACK BRUCE JAMES
IPC: G07F17/14
Filed: 1965-06-10
Abstract: 1,104,037. Coin-freed caretaker cabinets. SENTINEL FRECHECK LOCKS Inc. 10 June, 1965, No. 24618/65. Heading G4V. In a coin- and key-operated lock for a caretaker cabinet, insertion of a coin 50 into a shoot 42 carried by the look bolt 26 releases a pivoted latch 46 from a fixed abutment 51 to allow the bolt to be moved from a first to a second position. A stop 57 which supports the coin when the bolt is in its first position allows the coin to fall partially out of the shoot 42 when the bolt is in its second position. As the bolt is returned it pushes the coin into a coin return or coin retention receptacle. If an implement such as a knife blade is used to actuate the latch 46 the implement has to be withdrawn before the bolt has moved very far, causing the latch to engage a second fixed abutment 59 and thus preventing full extension of the bolt which in turn prevents removal of the key.
Patent GB-188144-A (GB)
Title: Improvements in and relating to electric switches
IPC: H01H21/42
Filed: 1921-09-16
Abstract: 188,144. Cubitt, A. S. Sept. 16, 1921. Switches, quick-action; bases; indicators.-In a snap-action switch, the contact-carrying spindle 1 is mounted in an iron box on whose front is a short, cylindrical casing 3 containing the operating mechanism, which comprises a double toggle, a dead-centre spring 29, a switch arm 20 and a lever 8 formed integral with the handle. The arm 20 carries at each end a bell-crank lever 23, 24 to the heels of which is connected the spring 29. Each is slotted at 25 and 26 to engage a pin 5 in a member 4 pivoted to the frame at 6. The pin 5 also engages a broad slot 7 in the lever 8. The arm 20 is pivoted on the switch spindle 1. The travel is limited by stops 18, 19 on the case engaging a projection on the handle. In operation, the arm 8 presses the pin 5 and flattens the toggle 23, 24 stretching the spring 29 to maximum tension. After the dead-centre position, the spring exerts a counter-clockwise torque, see Fig. 3, on the pin 5 and sc rotates the entire mechanism into the " on " position. To ensure proper starting of the movement, tail-piece 30 on the lever 8 engages the arm 20 to rotate it. The arm 20 further carries circumferential projections 33, 34 extending below a window 35 to indicate the " on " and " off " position.