baber/WOPTO huggingface dataset:
Patent GB-1304943-A (GB)
IPC: G03B27/80
Filed: 1970-06-01
Abstract: 1304943 Photo-electric control of copying MINNESOTA MINING & MFG CO 1 June 1970 [2 June 1969] 26390/70 Heading G2A In a photo-sensitive copier in which a lightsensitive media 19 is interposed between a source 10, 12 of diffuse light and an article 17 to be copied and in which the ambient intensity of the diffuse light varies according to the absorptive and reflective properties of the article, the ambient diffuse light is detected and the exposure cycle is terminated when the integral of the detected value equals a predetermined value. Photo-cell 24 is housed in a matt white chamber 22 and communicates with the diffuse ambient through an aperture which prevents direct light. Photo-transistor 30 controls the charge on capacitor 40, a transistor 38 which is reverse biased simultaneously with lamp energization serving between prints to effect discharge. The desired integrated value which may be adjusted by potentiometer 48 fires a programmable unijunction transistor 36 to provide a terminating signal across load resistor 50.
Patent GB-682036-A (GB)
Title: Improvements in or relating to movable hearths for furnaces
IPC: C22B1/20
Filed: 1950-10-30
Abstract: 682,036. Furnace hearths. SCHNEEWIND, W. Oct. 30, 1950 [Oct. 31, 1949], No. 26464/50. Class 51 (ii). The removable hearth of a heat treatment furnace comprises transverse bearer bars 11 seating on longitudinal carrier bars 7 and embedded in refractorymasonry, and a chassis formed of transverse 1-girders- 3 on rails 2 engaging deep grooves in rollers 1 mounted in cages formed of longitudinal side-plates and transverse distance tubes. Hollow conical blocks 8 embedded in rammed or compounded material 10 are connected to the carrier bars 7 by draw bolts and side-plates 5 are provided dipping into sand seals 6. When the hearth is drawn from the furnace, as by a chain attached to draw gear disposed between therails 2, with the aforementioned roller construction relative movement of the rollers and the hearth is small so that additional supporting rollers in front of the furnace may be dispensed with.
Patent GB-462555-A (GB)
Title: Improvements relating to freewheel clutches
IPC: F16D41/30
Filed: 1935-09-24
Abstract: 462,555. Free - wheel clutches. RENOLD & COVENTRY CHAIN CO., Ltd., and RENSHAW, A. Sept. 24, 1935, No. 26488. [Class 80 (ii)] In a free-wheel clutch for cycles, pawls 28 are housed in slots 22 which are formed in the outer side face of the sprocket hub 16 and which have rounded parts 20 to receive the pivotal ends of the pawls, the pawls are urged into engagement with ratchet teeth 14 on a sleeve 10 secured to the wheel hub by wire springs 32 disposed in a peripheral groove 30 on the exterior of the hub 16, and the pawls and springs are retained in position by a flanged cover plate 40 secured to the hub 16. Each spring has a central loop 34 located in a slot 36 in the outer side face of the hub 16, and the end which engages the pawl is also looped. The cover 40 may be secured by screws or its flange may have spring tongues engaging a groove 46, Fig. 6, on the hub 16. Bearing rollers 52, Fig. 5, or balls 62, Fig. 6, are arranged between the hub 16 and the sleeve 10. Where balls are employed, these are inserted through co-operating filling grooves 64, one of which is subsequently blocked by means of a peg 66 inserted radially in the hub 16. This peg may be a force fit in its hole or may be held in position by a flanged cover 65. When a lock nut 68, Fig. 7, is disposed between the frame member 72 and the bearing cone 70, there is sufficient room for the cover 40 to be moved into the position shown in dotted lines in Fig. 7, thus affording access to the pawls, and springs. In the absence of such lock nut, there is still sufficient room for the cover 40 to be tilted so as to afford access to the pawls and springs.
Patent GB-413898-A (GB)
Title: Improvements in or relating to incubators
IPC: A01K41/00
Filed: 1933-09-27
Abstract: 413,898. Hatching -appliances. STEPHENS, H. W., St. Leonards Court, Upton-St.-Leonards, Gloucestershire. Sept. 27, 1933, No. 26624. [Class 5 (ii).] One or more electrically-driven fans, mounted on the door of an incubator, are so arranged as to be inoperative while the door is in the open position. A fan 3, which may be protected by a perforated guard 6, is mounted on the door 2 of an incubator, the fan being driven by a motor 7 also mounted on said door. Air enters and leaves the incubator through damper controlled apertures 14 having associated heating elements 16. The motor circuit comprises a switch 11 operated by the abutment of a member 9 on the door 2 against the switch arm 10. Alternatively, a knife member on the door may coact with a slotted member on the casing to form an operating switch. Alternatively, the motor may be disposed on the top of the cabinet and the fan drven through a flexible shaft. More than one fan may be mounted on the door, the fans being connected in series or parallel or driven by a common motor.
Patent GB-532913-A (GB)
Title: Improvements in or relating to concrete and like mixers
IPC: B28C9/04
Filed: 1939-09-26
Abstract: 532,913. Concrete mixers; worm conveyers. BENFORD, Ltd., and McKENZIE, T. A. Sept. 26, 1939, No. 26631. [Class 86] [Also in Group XXX] In a concrete-mixer of the kind in which the ingredients are fed to a rotating drum by worms of increasing pitch working in a hopper divided into compartments by adjustable, vertical partitions, the auxiliary worm, mounted on the bottom of a hopper at right angles to the main hopper, is readily removable to facilitate cleaning, and bars or spikes are fitted to the main worms to prevent tunnelling; the drive is effected by means including a clutch which slips when the resistance is excessive, and the liquid supply is cut off when the worms are stopped. The auxiliary worm 23, working in the cement hopper 24, is supported at one end by a bearing in the finished wall of the hopper and at the other by a dog coupling. The main worm 12 is provided with radial bars 79 which may project from the blade of the worm, and may be in loop form. The worms are driven through a friction clutch which over-runs on the worms being obstructed and is operated by a lever 22 connected by a link 33 with a valve controlling the water supply. The door 68 of the drum is carried by a pivoted arm 68<SP>11</SP>.
Patent GB-1137078-A (GB)
Title: Polymers of episulphides
IPC: C08G75/06
Filed: 1966-06-15
Abstract: 1,137,078. Polymers of episulphides. CELANESE CORP. 15 June, 1966 [24 June, 1965], No. 26687/66. Heading C3R. Fibre-forming, sulphur-containing polymers are prepared by polymerizing a 1,2- or 1,3- episulphide using as catalyst the reaction product of a halide of a Group II metal and a mercaptan. Filaments of polyethylene sulphide having a tenacity of 0À6 gms. per denier and an extension of 8 to 10% are claimed. Other monomers which may be polymerized include the propylene and butylene sulphides, thietane and substituted thiuranes, e.g. 1,2-thia-3,3-dichlorobutane, butyl thioglycidyl ether, 1,2- thiapentanoic acid, 2-methoxy thiacyclobutane, 6 - thiabicyclo - [3,1,0] - hexane, 2 - thia - 4- azabicyclo-[1,1,0]-butane &c. They may be copolymerized with other monomers, e.g. alkylene oxides. For the catalyst, specified metal halides are zinc, mercuric, calcium and barium chlorides, cadmium bromide, beryllium iodide and magnesium and strontium fluorides. The mercaptan may contain one or more SH groups as well as substituent groups and may be aliphatic or aromatic, saturated or unsaturated, acyclic or cyclic. Butyl mercaptan is used in the examples. The reaction product may be prepared in situ. The polymers may be modified, for example by reaction with diisocyanates, and may be mixed with additives such as titanium dioxide, glass, carbon black, mica, finely divided metals and calcium carbonate.
Patent GB-1273581-A (GB)
Title: Optical apparatus for data processing
Inventor: SNAPER ALVIN A
IPC: G11C13/04
Filed: 1969-05-27
Abstract: 1,273,581. Optical data store. ADVANCED PATENT TECHNOLOGY Inc. 27 May, 1969, No. 26691/69. Headings G4A and G4C. Optical store has a record means having a plurality of discrete regions which are selectively unpolarized, polarized in one direction or polarized in a different direction and illuminating means selectively directing on to the record unpolarized light, light polarized in one directon and light polarized in the different direction. The record means may have an upper layer 10a with unpolarized portions 10a<SP>11</SP> and portions 10a<SP>1</SP> polarized in one direction and a lower layer 10b with unpolarized portions 10b<SP>11</SP> and portions 10b<SP>1</SP> polarized at right angles to portions 10a<SP>1</SP>. The portions 10b<SP>1</SP> may be aligned only with the unpolarized portions of layer 10a or may have some polarized portions 10b<SP>1</SP> aligned with polarized portions of layer 10a (Fig. 1a). The record means may contain two transparent electrodes 22, 25 coupled to a voltage source, a photo-conductive layer 23 and a ferroelectric layer 24. When layer 22 is illuminated with a spot of light from source 37 and lens 38 a portion of the photo-conductive layer conducts and current flowing through the ferro-electric layer 24 produces an area polarized in a direction determined by the direction of current flow. When the voltage is removed discrete areas of polarization remain The areas can be removed by supplying current flow to each area in an opposite direction to the initial direction. The records are supplied with unpolarized light 11a, polarized light passed only by one of the polarized areas 11c and light passed only by the other polarized areas 11b. The relative amounts of light passing through the record may be detected and their polarization may be detected or the presence or absence of light may be detected.  Construction.-Sheet of photographic film having opposite surfaces differently stressed so that the optical grain on the two sides run in different directions at 90 degrees to each other has dye material such as iodoquinine sulphate supplied to the layers to render them polarized in directions at right angles to each other. The surfaces are then coated with a photo resist material, the material on the upper surface being normally insoluble but becoming soluble in a suitable solvent when exposed to light and the material on the other surface being normally soluble but becoming insoluble when exposed to light. A suitable mask is placed on the upper surface and the surface is exposed to light. The exposed material is rendered soluble but the polarized layers prevent light from reaching the lower surface. The exposed material on the upper surface is dissolved and the polarizing dye material is removed from the exposed surface portions. The upper surface is exposed to light and the portions of the lower surface corresponding to the unpolarized areas of the upper surface are rendered insoluble and are later dissolved and the then exposed dye is removed.
Patent GB-1093294-A (GB)
Title: A diffraction grating spectrophotometer
Inventor: HASHIZUME SHOJIRO
IPC: G01J3/06
Filed: 1966-06-15
Abstract: 1,093,294. Spectrophotometers. SHIMADZU SEISAKUSHO Ltd. June 15, 1966 [June 15, 1965], No. 26699/66. Heading G2J. [Also in Division G1]  A spectrophotometer, having a radiation source, an entrance slit 24, a collimator 25 and two diffraction gratings G1, G2 rotatable about their own axes so as to form partly overlapping ranges of wavelengths, is provided with a mirror M which is movable into or out of a beam of light from the collimator 25 for selectively directing the beam towards each grating, movement of the mirror being effected when the two gratings G1, G2 are arranged to produce the same wavelength within the overlapping portion of the respective wavelength ranges. In the embodiment shown each grating is mounted on a shaft 32, 33 which also carries a lever L1, L2. The levers L1, L2 are urged against cams C1, C2 respectively. The cams C1, C2, together with further cams C3, C4, C5, are fixedly mounted on a shaft 34, driven by a motor 35. The third cam C3 actuates a micro-switch 41 to start a motor 40. The mirror M is moved by a belt 42 which is driven by the motor 40, an actuator 43 fixed to the belt being provided to actuate one of two microswitches 44a, 44b and so stop the mirror M. Light diffracted by the gratings returns to the collimator 25 and is then directed through a slit 27 on to a detector 31. Any unwanted frequencies of the diffracted light passing through the slit 27 are removed by the location in the light path of one of a selection of interferences filters F1, F2, F3, F4 mounted in a rotatable disc 45. A motor 46 rotates the disc 45 on actuation of one of two micro-switches 47, 48 by the co-operating cams C4, C5 respectively. Further micro-switches 49-52 are actuated by a projection 53 on the disc 45 in order to stop the motor 46. The cams C1-C5 are shaped so as to produce the required sequence of movements on actuation of the motor 35. With the mirror located in the light beam as shown, rotation of the cam C1 causes the grating G1 to scan a first wavelength range # 1  to # 2 . Cams C1 and C2 then cause the gratings G1, G2 to scan simultaneously an overlapping range # 2 to # 3 . During this operation the cam C3 operates the motor 40 to move the mirror out of the light path. Thereafter the grating G2 scans a further wavelength As to # 4 . The cams C4, C5 serve to change the filters F1-F4 as required.
Patent GB-1340603-A (GB)
Title: Apparatus for use in carrying out fluxless tinning
IPC: B23K3/06
Filed: 1971-04-19
Abstract: 1340603 Soldering SIEMENS AG 19 April 1971 [14 April 1970] 26709/71 Heading B3R An apparatus for fluxless tinning in a non- flowing bath of liquid solder comprises a vessel 1 provided with heating means 3 and an ultrasonic generator 20 having a sonotrode 8 passing through an aperture 7 in the bottom of the vessel, the sonotrode passing through a seal 9 located outside the vessel and being provided with an annular flange 15 in a nodal plane of the ultrasonic output of the ultrasonic generator, the flange being clamped between two sealing washers 14, 16 by screws 18 which fix the assembly so formed to the vessel, whereby in use ultrasonic vibrations are transmitted to liquid solder contained in the bath. The electrical heating element 3 is provided between the vessel 1 and an outer wall and a cover 5 partly closes the top of the vessel. The generator 20 is arranged in a cabinet 12 on the top of which the vessel 1 rests. A spacer ring 13 engages the washer 9, the sealing washer 14 engages the ring 13 and the annular flange 15 is clamped between the washer 14 and the further washer 16. An intermediate element 19 is positioned between the sonotrode 8 and the moving coil type generator 20 and is cooled by a fan 21 or by water pumped through an internal passage or passages in the element 19.
Patent GB-499986-A (GB)
Title: An improved beer delivery pipe capable of being easily cleaned
IPC: B67D1/07
Filed: 1937-10-02
Abstract: 499,986. Pipe-bends. BEACH, E. F. Oct. 2, 1937, No. 26727. [Classes 99 (i) and 99 (ii)] An elbow bend C in a beer delivery pipe has at the outside of the bend a screwed plug E that can be removed to enable a cleaning brush to be inserted to clean both limbs of the bend. Speci fication 237,675, [Class 99 (i)], is referred to.
Patent GB-1423443-A (GB)
Title: Flow meter for parenteral solutions
IPC: G01F1/22
Filed: 1973-06-05
Abstract: 1423443 Fluid-flow meters UNITED STATES SURGICAL CORP 5 June 1973 [9 June 1972] 26826/73 Heading G1R A flowmeter 10 for measuring the flow-rate of parenteral solutions injected into the body by intravenous feeding techniques comprises a hollow elongated measuring device 22 fitted within a transparent flexible tube 20 and having an internal tapering passage 30, and a member 34 movable along the passage in response to fluid-flow therethrough, the position of the member 34 in the passage 30 giving a measure of the fluid-flow rate The meter may be used in a system as in Fig. 1 incorporating a supply container 13, a drip chamber 14, control valve 17 and a needle 18. The metering device 22 is preferably positioned in a portion 23 of a loop of plastics tube 20 such that fluid-flow in the portion 23 is upwards, the flow thus forcing the member 34 upwards against its own weight until balance is attained. The device 22 may be formed by two plastics components mating to form a cylinder in which the passage 30 is defined. The passage has preferably linearly or parabolically tapering side walls 32 and parallel planar front and back walls 30, the passage containing a cylindrical member 34 and the inlet 36 and outlet 38 of the passage being shaped to prevent the member 34 leaving the passage 30. Alternatively the passage 30 may have a circular crosssection and house a spherical member 34. In alternative embodiments Figs. 11 and 12 (not shown) the hollow measuring device 22 incorporates grooves in its outer surface communicating with the passage 30 so that the body itself, when placed in a straight tube, provides a flow-path loop. If the member 34 is less dense than the fluid then the device 22 can be positioned in a downward fluid-flow, the force of the flow on the member 34 acting against its upthrust.
Patent GB-1436069-A (GB)
Title: Heat-resistant aluminium alloy
IPC: C22C21/02
Filed: 1974-06-18
Abstract: 1436069 Aluminium alloy CKD PRAHA OBOROVY PODNIK 18 June 1974 [18 June 1973] 26898/74 Heading C7A A heat resistant alloy has a composition within the following range in per cent by weight at least one of Cr, Zr, V, Mo, Nb, Ta, W À05-1 m total optionally Mg À01-2 Al and impurities the balance. The alloy may be used for cast or forged internal-combustion engine parts, parts of blowers in gas turbines and parts of drying chambers, furnaces or gas suction devices operating at 200- 300‹C.
Patent GB-269243-A (GB)
Abstract: 269,243. Marks, E. C. R., (Du Pont de Nemours & Co., E. I.). Jan. 12, 1926. Fungicides; insecticides; organo-mercury compounds.-Organo-mercury compounds for use as fungicides, insecticides, and seed disinfectants are synthesized by reaction between a mercury oxide or salt and an aromatic organic compound such as a phenol, in the presence of a relatively insoluble substance adapted to act as a vehicle or diluent for the organo-mercury compound so formed. The diluent may be completely inert, or may react with the initial materials or with intermediate products formed in the synthesis of the organo-mercury compound, and may be of basic, neutral, or acid character. Diluents specified are calcium or magnesium hydroxide or carbonate. aluminium oxide, barium carbonate or sulphate, clay, charcoal, infusorial earth, and calcium phosphate. The reactions specified in examples are those between hydrated lime, mercuric acetate and ortho-chlor-phenol, between rrercuric acetate and ortho-nitro-phenol sodium,. between mercuric bichloride, sodium hydroxide and ortho-chloro-phenol, and between mercuric acetate and beta-naphthol. In each case a water solution, or suspension of the reagents, containing also an insoluble diluent, is heated to about 80‹ C. for several hours, and the residue filtered off, dried, and powdered. The active material forms a surface layer on the particles of the diluent and not a mere mixture therewith.
Patent GB-482823-A (GB)
Title: Improvements in or relating to sound mufflers for suction cleaners
IPC: A47L9/14
Filed: 1936-10-05
Abstract: 482,823. Exhaust and like silencers. HOOVER HOLDING CO., Ltd. (Hoover Co.) Oct. 5, 1936, No. 26973. [Class 7 (ii)] A muffler for reducing the noise of the air stream flowing from the fan of a suction cleaner comprises a tubular body of flexible sounddeadening material reinforced by a skeleton framework, and adapted at one end to be fitted to the exhaust from the fan, and to open into the dust receptacle at its other end. The Figure shows such a tubular body composed of felt E <1> lined within. and without with cloth E<2>, E<3> and connected at one end to the clamping- ring F of the dust bag, this ring being connected by longitudinal struts H to a ring G at the other end of the muffler. The inner cloth lining E<3> is extended at E<4> so as to form a light non-return valve which collapses when the motor is switched off and prevents return of dust into the muffler. In a modification, the struts H are embedded in the felt E<1>. Specification 412,894, [Group XXVIII], is referred to.
Patent GB-782476-A (GB)
Title: Linings, particularly for deep drill holes
IPC: E21B17/042
Filed: 1955-09-22
Abstract: 782,476. Joints for drill-hole linings. PHOENIX-RHEINROHR AKT.-GES. Sept. 22, 1955 [Sept. 23, 1954; Aug. 31, 1955], No. 27074/55. Class 99(1). In a lining, particularly for mineral oil drill holes, comprising a number of elements 1, 5 connected by a screw-threaded joint, the ends of the elements are cold-worked prior to cutting the screw-threads whereby the end of the element 5 is expanded and the end of the element 1 is correspondingly contracted, the element 1 having a zone 2 located at the inner end of the screw-thread thereof and expanded to the same extent as the expanded part of the element 5. As shown in Fig. 3, the end 7 of the element 5 is expanded conically to a gradient of 1 : 20, the outer and inner surfaces being respectively machined parallel to the axis of the element and to a cone having a gradient of between 1 : 5 and 1 : 15 and as shown in Fig. 2, the end of the element 1 is expanded conically to a gradient of 1 : 20 and a part 3 thereof is then contracted conically to a gradient of 1 : 20, the remaining expanded part 2 forming the zone ; the inner and outer surfaces of the part 3 are respectively machined parallel to the axis of the element and to a cone having a gradient of between 1 : 5 and 1 : 15. Screw-threads, preferably as described in Specification 777,901, are cut in the conically machined surfaces of the elements. In a modification, the end of the element 5 is formed with contiguous inner and outer parts respectively contracted and expanded parallel to the axis of the element, the terminal end of the element being conically expanded to an angle of 15 degrees and machined internally and externally parallel to the axis of the element ; the element 1 is similarly but inversely formed and in this case, a parallel screw-thread is used for connection of the elements.
Patent GB-1077505-A (GB)
Title: Detent mechanism
Inventor: MARR ERIC ROBERT
IPC: B41K1/12
Filed: 1964-07-02
Abstract: 1,077,505. Hand-stamps. H. SAVAGE Ltd. July 2, 1965 [July 2, 1964], No. 27432/64. Heading B6D. [Also in Division F2] A time registering date hand-stamp has an arrow mounted opposite a knurled ring 13 rotatable to positions located by a detent mechanism (see Division F2). The ring 13 has forty-eight indentations engageable by the ends 22 of a lever 20, the spacing of the ends being such that when one end engages an indentation the other end is withdrawn. The detent provides ninety-six positions for the ring, corresponding to quarter hour divisions on a twentyfour hour face.