baber/WOPTO huggingface dataset:
Patent GB-207612-A (GB)
Title: Safety attachments for motion picture machines
IPC: G03B21/18
Filed: 1922-08-31
Abstract: 207,612. Wyatt, F. B. Aug. 31, 1922. Kinematograph apparatus. - In projectors, switch devices associated with the film loops above and below the gate and with a normally taut stretch of film are connected with an electromagnet, so that closure of any switch releases a shutter which, in falling, cuts off the light beam and operates a switch to stop the driving motor: a governor-controlled switch may also be provided. As shown in Fig. 7, the shutter 11 having a handle 12 is mounted on a pivot 13 carried bv the lamp house, and a lug 15 moves with the shutter to engage a switch block 6 and make or break the motor circuit across contacts 9, 10 as the shutter is opened or closed. The shutter is held open by a lug thereon which is engaged by a catch 16 projecting from the armature 17 of an electromagnet arranged on the further side of the frame 5. Current is supplied to the magnet through a transformer. Fig. 4 shows a roller 41 carried by an arm 43 pivoted at 45 to a bracket 44 within the upper film-loop and normally held up by a spring round the pivot. When the roller is depressed by the film, a leaf spring carried by the arm 43 engages a contact 42 and completes the circuit of the electromagnet. The arm carrying the pressure rollers for the bottom sprocket bears against a lever 52, Fig. 3, which is pivoted on a bracket 53 and has an arm projecting beneath and normally lifting a spring contact 56. When the lower loop shortens, the pressure-roller arm is raised and allows the lever 52 to turn so that the contact 56 completes the circuit of the magnet. A roller 58 on a pivoted arm 59 bears against the taut film passing from the lower sprocket. An arm 63 carried by the arm 59 engages a contact member 61, when the film becomes slack or runs out, to complete the circuit of the magnet. A separate governorcontrolled switch, a modification in which the mechanisms for the upper loop-controlled switch and the governor-controlled switch are combined, and a modified form of the switch devices for the lower loop, are described.
Patent GB-189262-A (GB)
Title: Improvements in adjustable limit gauges
IPC: G01B3/38
Filed: 1921-09-06
Abstract: 189,262. Hills, S. C. Sept. 6, 1921. Linear-dimension gauges.-In adjustable limit gauges having multiplying-mechanism between the movable contact-member and a pointer indicating on a dial, the extent of movement of the contact member 3, Figs. 1 and 7, is varied by adjustable bushes 9 in the wall of a box 4 containing the mechanism. A spring 7 surrounding a part 5 of the contact-member takes the thrust of the work being gauged, a separate spring 27, Fig. 3, being employed to return the pointer 25 to zero. The multiplying-mechanism comprises an arm 11 rigidly attached to the part 5 of the contact member, and levers 13, 19 and a link 18, with a further lever between the part 19 and the pointer. The arm 11 may be interchangeable to vary the magnification, and the support 21 of the lever 19 may be adjusted across the framework to vary the effective length of the last lever of the system. The dial and pointer are arranged in such a position that the readings may be readily observed. The fixed contactmember 2, Fig. 1, may be replaced by a contact member 2, Fig. 6, adapted to be clamped by a set screw 29 in any adjusted position. The imprcvements may be applied to internal gauges.
Patent GB-669599-A (GB)
Title: Improvements in or relating to fluid flow control valve apparatus
Inventor: VERTEUIL LOUIS RENE DE
IPC: G05D7/01
Filed: 1949-09-14
Abstract: 669,599. Valves. APEX (TRINIDAD) OILFIELDS, Ltd. Sept. 14, 1949, No. 23678/49. Class 135. A valve for controlling the rate of flow of a fluid comprises a body 12 with an inlet 15 and an outlet 50, and a spring-loaded diaphragm 16 carrying an orifice plate 23 and a spindle 26 to actuate a double beat closure member 34 controlling flow through ports 45, 46 to ports 44 connected to the outlet 50. The differential pressure created by flow through the orifice positions the diaphragm and hence the closure member to give a constant flow at the outlet. The ports 45, 46 form seats for the closure member and are mounted in a member 35 movable axially by a rod 37 to vary the rate of flow. It is stated that the direction of flow may be reversed.
Patent GB-501529-A (GB)
Title: Improvements relating to superheterodyne receivers
IPC: H03B5/10
Filed: 1937-08-30
Abstract: 501,529. Valve circuits for wireless reception. STANDARD TELEPHONES & CABLES, Ltd., BARNARD, R. N., and KRAM, W. Aug. 30, 1937, No. 23679. [Class 40 (v)] In a superheterodyne wave translating system a dynatron local oscillator is employed and controlled in frequency by the potential applied to a control electrode. The Figure shows a superheterodyne receiver employing a dynatron V as local oscillator to the control grid of which a voltage is supplied from an error detector dependent on the deviation of the intermediate frequency so as to reduce the deviation. The control grid of the dynatron is biassed by resistance R in the' cathode lead which is shunted by byepass condenser C3. The error detector may be of the kind described in Specification 467,485.
Patent GB-776508-A (GB)
Title: Improvements in or relating to method of coating surfaces with an adherent film of metallic silver
IPC: C03C17/10
Filed: 1955-08-17
Abstract: A surface is coated with a film of silver by contacting it with an aqueous ammoniacal silvering solution containing as a reducing agent b  - hydroxyethylhydrazine or a salt thereof. Preferably, two aqueous solutions are simultaneously mixed and sprayed on to the surface, one of said solutions comprising silver nitrate and the other comprising b -hydroxyethylhydrazine or a salt thereof e.g. sulphate, at least one of the solutions containing ammonia hydroxide; alternatively, one of the solutions may comprise silver nitrate and the reducing agent, and the other solution may comprise ammonia hydroxide.  Small amounts of sodium hydroxide may also be incorporated in the solutions. Transparent and opaque non-conducting materials, e.g. glass and synthetic resins such as polystyrene, polyethylmethacrylate, phenol - aldehyde resins and cellulose esters, may be silvered by this method.
Patent GB-900586-A (GB)
Title: Dienoic acids and derivatives thereof
Inventor: BARTON DEREK HAROLD RICHARD
IPC: C07C51/00
Filed: 1958-07-23
Abstract: The invention comprises compounds of formula <FORM:0900586/IV (b)/1> and <FORM:0900586/IV (b)/2> where R1, R2, R3, R4, R5 and R6 represent hydrocarbyl radicals or residues formed from hydrocarbon carboxylic acids by removal of a hydrogen atom and R3, R4, R5 and R6 may also represent hydrogen, and X is a secondary or tertiary amino group or a hydroxy group.  They are prepared by irradiating a cyclohexadienone of formula <FORM:0900586/IV (b)/3> with ultra violet light in the presence of a nucleophilic reagent HX, i.e. water or a primary or secondary amine, specifically aniline or cyclohexylamine.  A solvent may be used, concentrations of cyclohexadienone of about 0,1% w/w often being convenient. Air is preferably excluded.  The U.V. light should have substantial intensity at wavelengths between 250 and 500 mm .  Details are given of the preparation of the following compounds from dienoic acids according to the invention: 6-acetoxyheptanoic acid (converted to its p-bromphenacyl ester) and 6 - acetoxy - 4 - methylheptane - 2 - carboxylic acid cyclohexylamide by hydrogenation of dienoic compounds; p-bromphenacyl-5-methyl-hexa-2,4-diene-1-carboxylate; the 2,4-dinitrophenylhydrazone of 1-acetyl-4-carboxybut-1-ene by the action of methanolic HCl and 2,4-dinitrophenylhydrazine on 5-acetoxy-hexa-2,4-diene-1-carboxylic acid; methyl 5-ketohexane-1-carboxylate identified as the 2,4-dinitrophenylhydrazone by saponification of 6-acetoxyheptanoic acid obtained as above, chromic acid oxidation to the keto acid, and conversion to the methyl ester with diazomethane.  The Provisional Specification refers additionally to the preparation of dienoic compounds of the above formulae in which the "R" groups may be alkoxy, acyl or halogen and to the use of alcohols as the nucleophilic reagent, giving dienoic esters. Reference is made to the irradiation of a 1,4-di-6-(1-keto-2,6-dimethyl-4-halo-cyclohexadiene-2,4-yl) - but-2-ene (prepared by reaction of a 2,6-dimethyl-4-halophenol with a 1,4-dihalo-but-2-ene) in ether saturated with water, and dehydrohalogenating the resulting dihalodicarboxylic acid to give crocetin.
Patent GB-855021-A (GB)
Title: Improvements in magnetic recording systems
IPC: H03B5/12
Filed: 1958-07-23
Abstract: 855,021. Magnetic erasing heads; local Circuits. AMPEX CORPORATION. July 23, 1958 [Aug. 1, 1957], No. 23784/58. Class 40 (2). [Also in Group XL (c)] The bias and erase current generator for a magnetic recorder uses the bias and erase head windings 16, 14 as the inductive part of the resonant circuit of a complementary symmetric transistor oscillator.
Patent GB-691050-A (GB)
Title: Improvements in looms for weaving tufted pile fabrics
Inventor: BASSINDALE ISAAC BRADLEY
IPC: D03D39/02
Filed: 1949-09-15
Abstract: 691,050. Stop motion for Axminster loom. PLATT BROS. & CO., Ltd. Sept. 12, 1950 [Sept. 15, 1949], No. 23786/49. Class 142(i) Stoppage of the loom if a tube frame 16 jams on the carrier chain 12 and prevents downward movement of the transfer arms 13 is effected by an arm 17 engaging an insulated plunger 18 in a stop motion circuit which also includes a timing switch to prevent operation of the stop motion when the transfer arms normally occupy their upper position. If the circuit is still closed at 17, 18 when the timing switch closes, the loom is stopped as described in Specification 684,558.
Patent GB-1042344-A (GB)
Title: Data reading or sensing apparatus
IPC: G11C17/00
Filed: 1963-06-14
Abstract: 1,042,344. Sensing records. SVENSKA DATAREGISTER A.B. June 14, 1963 [June 21, 1962], No. 23791/63. Heading G4M. Apparatus for sensing records on which data is recorded by means of reflective and non- reflective areas, comprises a light source 2, optical fibres 4 extending between the source 2 and the code area of a record 1, and further optical fibres 10 for conducting light reflected from the record 1 to light responsive devices 6, 8. The ends of the fibres adjacent the record 1 are covered by a light transmitting disc. The bundle of fibres may be moved manually across the record to effect scanning. The fibres may also act as a filter.
Patent GB-301958-A (GB)
Title: Improvements relating to lifting apparatus
IPC: A61G7/10
Filed: 1927-09-09
Abstract: 301,958. Hodges, S., and Saunders, G. F. C. Sept. 9, 1927. Fluid-pressure and screw- and-nut actuated load-handling appliances. - A lifting- appliance specially adapted for moving invalids comprises a carrying frame linked to a base frame and supported thereon by an adjustable strut which can be hydraulically or screw actuated. The invalid chair &c. is suspended from hooks a<2> at the end of a carrying frame a pivotally mounted on a cross-bar h having a downwardly directed screw e engaging a worm-wheel nut f<4>, Fig. 2, in a casing f<3> and operated by a handle g<3>. The casing f<3> is mounted on a vertical tube d<1> extending upwards from the base frame b which is mounted on wheels c. The rear ends of the frames are connected by links i provided with handles k for manipulating the appliance. In a modification, the carrying frame m, Fig. 4, is mounted on a ram r' sliding in a cylinder r containing pressure fluid, and, by means of a handle s<3> and screwed plunger s<2> working in a transverse cylinder s, the pressure fluid can be manipulated to raise or lower the load. The frames are suitably braced and a steadying link t<1> for the chair may be provided.
Patent GB-701660-A (GB)
Title: New derivatives of barbituric acid and process for the manufacture thereof
Filed: 1951-10-12
Abstract: The invention comprises barbituric acid derivatives of the general formula <FORM:0701660/IV(b)/1> (wherein R represents a saturated or ethylenic, straight or branched chain or cyclic aliphatic group, an aryl or aralkyl group, or a second b -cyclohexylidene-ethyl group), and the manufacture thereof by condensing, in an organic medium in the presence of an alkaline reagent, a b -cyclohexylidene-ethyl halide with a dialkyl ester of an R-substituted malonic acid, or with an unsubstituted dialkyl malonate followed by condensation of the product under similar conditions with an alkyl or aralkyl halide, and in either case condensing the resulting di-substituted dialkyl malonate with urea in the presence of an alkaline condensing agent (e.g. sodium ethoxide).  Examples describe the preparation of compounds in which R represents ethyl, phenyl and methyl, by way of the diethyl esters of the correspondingly substituted malonic acids.
Patent GB-684997-A (GB)
Title: Improvements in or relating to water heaters
IPC: F24H1/12
Filed: 1950-09-29
Abstract: 684,997. Hot-water boilers. BODLEY, E. D. Oct. 1, 1951 [Sep. 29, 1950], No. 23894/50. Class 64 (i) A gas-burning water heater comprises an outer tube 10 and an inner tube 11 which together form an upright elongated annular chamber having a water inlet 13 at its lower end, a header 15 spaced above and connected to the upper end of the annular chamber so that combustion products can escape between the header and the annular chamber to the atmosphere, and an outlet pipe 18 leading from the header, a gas burner 20 being located at the lower end of the tubes. The annular chamber is connected to the header 15 by a U-shaped tube 14 located in the upper part of the inner tube 11. The header comprises two flanged circular sheet metal parts fitting one inside the other. Dimensions are given.
Patent GB-1339239-A (GB)
Title: Method and apparatus for producing filter-containing cigarette paper sleeves
IPC: A24C5/46
Filed: 1972-05-22
Abstract: 1339239 Cigarette-paper tubes EFKA -WERKE FRITZ KIEHN GmbH 22 May 1972 [21 May 1971] 23941/72 Heading A2C In an apparatus for producing filter-containing cigarette-paper tubes, double length filters 24 are adhered at uniformly spaced intervals to one side of a continuous cigarettepaper tape 11 which is fed by an endless belt 25 through a wrapping means in which a device 26 wraps the tape 11 around successive filters 24 with the exception of a projecting longitudinal edge portion of the tape 11 and adhesive is applied by a mechanism 26 to the projecting edge portion which is then closed to form a continuous filter-containing tube 28, and the continuous tube 28 is cut into individual filter-containing tubes. The apparatus may also be used with single length filters. Means may also be provided for applying tipto the paper tape 11 in alignment with and on the side opposite to the positions on which the filters 24 are to be deposited.
Patent GB-669531-A (GB)
Title: Improvements in and relating to photographic type composing machines
IPC: B41B17/10
Filed: 1946-08-13
Abstract: 669,531. Electric type-printing telegraphy. HIGONNET, R. A. E., and MOYROUD,L., Aug. 13, 1946 [July 11, 1944; Nov. 13, 1944], Nos. 23989/46 and 23990/46. Class 40 (iii). [Also in Group XX] Relates to a photographic type-composing machine (see Group XX), wherein the characters are carried continuously by a disc or drum past a projection station, and characters are selected by a keyboard and stored as coded information in a register which, after a line has been stored, operates selector switches to cause a gasdischarge tube to emit light flashes of short duration at the instants when selected characters pass through the projection station, thus to project the images of selected characters in sequence on to a photographic sensitized surface. The Specification as open to inspection under Sect. 91, describes registration on a steel tape or wire. As shown, six voice frequency alternating currents are generated in coils a, b, c, d, e, f. When a key T is depressed, a combination of one or more coils is connected to a recording coil, a different combination of frequencies being recorded for each key. The key also operates a delayed-action relay 239 which interrupts the circuit to the recording coil after a definite time, and a magnetic clutch which causes the wire or tape to move a given distance. After a line has been recorded, the combinations of frequencies are picked up by a coil 243, amplified by an amplifier 244, and separated by band-pass filters 245. The filters are connected to relays 246 operating selector switches which connect an electric supply to one of a number of terminals on a disc (not shown) swept by a brush driven synchronously with the character disc or drum. The brush makes contact with the selected terminal at the instant when the selected character is at the projection station, causing a gas discharge tube to illuminate the selected character with a flash of light of short duration. This subject-matter does not appear in the Specification as accepted.
Patent GB-816687-A (GB)
Title: Improved device for the manufacture of artificial threads and like products by the wet spinning process
IPC: D01D5/06
Filed: 1956-08-03
Abstract: A modification is described in the apparatus of the parent Specification, according to which artificial threads are wet-spun by extruding a spinning solution from a spinneret submerged in a bath of coagulating liquid in a spinning trough and the filaments travel from the spinneret to a thread guide through a conpletely submerged straight tube open at both ends, the centre of the spinneret face, the axis of the tube and the point of contact of the filaments with the thread guide being in alignment, and the inlet end of the tube being a short distance from the face of the spinneret, the tube comprising two cylindrical portions of different diameter, the first portion of the tube, starting from the spinneret, having an internal diameter which only slightly exceeds that of the outer ring of spinneret orifices, and being connected by means of a gradually widening intermediate portion to the second cylindrical portion, which is wider than the first tube portion.  This apparatus is now modified in that the zone between the spinneret face and the opposite tube opening communicates with the surrounding space of the spinning bath by means of at least two annular channels coaxial with the spinneret and the tube, the channels providing paths through which, during the spinning operation, the coagulation liquid can flow from the portion of the spinning bath surrounding the zone into and through the zone and into the tube.  The annular channels are preferably provided by arranging between the spinneret and the tube opening facing it one or more flat rings, the inner diameter of which is at least equal to the diameter of the outer ring of spinneret orifices and the outer edge of which projects beyond the circumference of the mouth of the tube.  The ring or rings lie in a plane or planes normal to the axis of the tube, and are preferably provided with perforations.  If the entrance to the tube is flared, the ring or rings may be given a similar and similarly directed form, and they preferably taper towards the interior of the tube.
Patent GB-1055100-A (GB)
Title: 1,4-disubstituted piperazines and diazepines and process for preparing them
IPC: C07D295/067
Filed: 1965-06-08
Abstract: The invention comprises compounds of formula <FORM:1055100/C2/1> wherein Ar1 and Ar2 are phenyl, (C1- 5 alkyl) phenyl, halophenyl, trifluoromethylphenyl or thienyl groups, m is 2 or 3, Alk is -CH(CH3)- or -(CH2)nwherein n is 1, 2 or 3, X is a carbonyl or methylene group, R is a hydrogen atom or a methyl group, R1 is a hydrogen atom or a C1- 5 alkyl or (C1- 5 alkyl) carbonyl group, and Ar3 is a phenyl group optionally substituted by one or two halogen atoms or C1- 5 alkyl, C1- 5 alkoxy or nitro groups or a (C1- 5 alkyl) carbonyl group, or an a -naphthyl group, therapeutically acceptable acid addition salts thereof, and their preparation by (a) reaction of a compound of formula <FORM:1055100/C2/2> with a compound of formula Y-Alk-X-Nr1Ar3 wherein Y is a reactive ester of a hydroxy group, or with a compound of formula Y-Alk-CH2Z or ethylene oxide, wherein Z is a hydroxy group or a group Y, followed by esterification of any free hydroxy group and reaction with an amine NHR1Ar3; (b) reaction of a compound of formula <FORM:1055100/C2/3> with a compound Ar1Ar2CH(CH2)3Y; (c) N-acylation; or (d) reduction of a carbonyl group X or in an alkylcarbonylphenyl group R3 to a methylene group. The compounds of the invention have coronary vasodilatant, antiangiotensine, antihistamine, local anaesthetic, central nervous system stimulant and anticarrageenin activity.  N - Substituted - piperazine and diazepine starting materials are prepared by reaction of the corresponding N,N1-diunsubstituted compound, or one in which a nitrogen atom is protected by a benzyl group, with a compound of formula Y-Alk-X-NR1Ar3 or Ar1Ar2CH(CH2) 3Y, followed by hydrogenolysis to remove any N-benzyl group.  N - (2 - Bromoethyl) - 2,6 - dimethyl - aniline is prepared by reaction of 2,6-dimethyl-aniline with ethylene oxide to give N-(2-hydroxyethyl)-2,6-dimethyl -aniline, followed by treatment with hydrobromic acid.  1 - Chloro - 4,4 - di - (p - tolyl) - butane is prepared by catalytic hydrogenation of 4-chloro-1,1-di-(p-tolyl)-but-l-ene.  N - Chloroacetyl - 2 - or - 3 - propionylanilines are prepared by reaction of 2- or 3- propionyl-aniline with chloroacetyl chloride.
Patent GB-1492428-A (GB)
Title: Preparation of particulate cross-linked polymers
IPC: C08F2/44
Filed: 1975-06-04
Abstract: 1492428 Porous cross-linked polymer particles SHOWA DENKO KK 4 June 1975 [4 June 1974] 24161/75 Heading C3C Porous cross-linked polymer particles are obtained by polymerizing in aqueous suspension a mixture comprising up to 95% monovinyl aromatic monomer and at least 5% divinyl aromatic monomer, in the presence of paraffin wax and an initiator, removing the paraffin wax from the resulting polymer and, if desired, introducing ion exchange groups into the polymer. In the examples, the monomers comprise (1) divinyl benzene (55%), ethyl vinyl benzene (40%) and other unsaturated compounds (5%) and (2) a mixture of (1) together with about 400% of styrene. Benzoyl peroxide was used as the initiator and sodium dodecyl benzene sulphonate and tricalcium phosphate were also present. Polymerization was effected at 95 C. in an autoclave and after washing and drying, the paraffin wax was removed by passing mineral spirit through a column of the particles. Methanol was then passed through and the resultant particles dried. The particles derived from (1) were sulphonated with concentrated sulphuric acid at 100 C. Suitable paraffin waxes may have 20-100 carbon atoms per molecule and a m.p. of 40-80 C. and be used in an amount from 5-100% based on the aromatic monomers. In the process the paraffin wax dissolves in the monomer mixture and subsequently precipitates in the polymer particles in aqueous suspension.