baber/WOPTO huggingface dataset:
Patent GB-930611-A (GB)
Title: Improvements in or relating to electromechanical transducers
IPC: H04R1/18
Filed: 1959-07-03
Abstract: 930,611. Binaural pick-ups and recorders. INDUSTRIES MUSICALES ET ELECTRIQUES PATHE MARCONI. July 3, 1959 [July 3, 1958], No. 22939/59. Class 40 (4). [Also in Group XXXVIII] A pick-up or cutter for stereophonic records comprises two transducers 10, Fig. 2 (one only shown), respectively coupled through two mutually perpendicular coupling members 11, 12 to a cantilever stylus arm 5, whereby in response to movement of a stylus 4 one coupling member 11 transmits only one component of the stylus arm movement and the other coupling member 12 transmits only the component of stylus arm movement perpendicular to said one component. The stylus arm 5 is formed from a tube of lightweight metal and has at one end two mutually perpendicular flattened portions 7, 8. A portion 8<SP>1</SP> is secured between supports 9 mounted in a casing 15, Fig. 3. The transducers 10 are piezoelectric crystals. The coupling members 11, 12 have forked ends 13, 14 into which fits the arm 5. The axes x-x and y-y (Fig. 5) of the coupling members 12, 11 are perpendicular to the major faces of the portions 7, 8 respectively. Limited movement of stylus 4 in the direction of axis y-y produces bending of portion 8 and causes movement of member 12 but not of member 11. Limited movement of the stylus 4 in the direction of axis x-x produces bending of portion 7 and movement of member 11 but not of member 12. The distances apart of the various pieces bear the relationship A<SP>1</SP>B/BD = A<SP>1</SP>C/CE, A<SP>1</SP> (not shown) being the point of intersection of the axis of arm 5 and stylus 4, to balance the two transmission channels. The crystals are secured to covers 18, 19, Figs. 3, 4, and fit in recesses 16, 17 in a casing 15. Terminals 25 are connected to sockets 26 for receiving a connecting plug 27. Reference has been directed by the Comptroller to Specification 871,160.
Patent GB-723604-A (GB)
Title: Improvements relating to moving coil loudspeakers
Inventor: FOUNTAIN GUY RUPERT
IPC: H04R1/30
Filed: 1952-09-12
Abstract: 723,604. Loudspeakers. TANNOY, Ltd. Oct. 20, 1953 [Sept. 12, 1952], No. 23007/52. Class 40 (4). [Also in Group XXXVIII] A set of parts for assembly into any one of a number of horntype moving-coil loudspeakers of different characteristics consists of a number of horns (e.g. 2) of different characteristics each of which has an identical attachment portion 3, a number of power units (e.g. 12) of different characteristics each of which has an identical attachment portion 13, and an adapter 1 shaped for connection to the attachment portion 3 of any of the horns 2, and to that (13) of any of the power units 12, so that any desired combination of horn and power unit may be assembled at will. Preferably the attachment portions are annular in shape and the adapter is also annular. The adapter shown permits the simultaneous association of four power units 12 with a desired horn 2. In another construction described, the adapter has a central acoustic entry instead of the four entries 17 and is used to associate one power unit with one horn.
Patent GB-825139-A (GB)
Title: Machines for harvesting potatoes or like root crops
Inventor: HAMBLIN HENRY JOEL
IPC: A01D21/02
Filed: 1956-07-25
Abstract: 825,139. Root crop harvesters. BRITISH SOCIETY FOR RESEARCH IN AGRICULTURAL ENGINEERING. July 25, 1957 [July 25, 1956], No. 23062/56. Class 6(3). A potato or root crop harvester comprises a digging device 17 in which members 18 are arranged side by side with their upper surfaces 19 inclined upwards and rearwards and are so mounted and driven that any point on any of their upper surfaces 19 moves, in relation to the machine, in a cyclic path in a roughly vertical plane, each member 18 being out of phase with the member or members adjacent. The machine is mounted on a tool bar 10 having a framework 11 with attachment eyes 12, 13, a tubular support 16 depending from the bar 10 and carrying the device 17 of which the members 18 have each a rear arm 21 journalled on two crank pins 22, 23 of two shafts 24, 25 respectively. The shafts 24, 25 are driven through chain drives 26, 27 from a countershaft 28 through a gear-box (not shown), from the tractor power take-off. Members 18 move in paths shown at 29, Fig. 1. A conveyer 32 preferably of the chain or riddling type, is driven by shaft 28. In a modification the upper surfaces 19 of the members 18 are covered by a flexible sheet to which the members 18 impart an upward rippling motion.
Patent GB-319879-A (GB)
Title: Improvements in means for regulating automatically the supply of fuel and air to furnaces
IPC: F23N1/02
Filed: 1928-08-10
Abstract: 319,879. Fromhein, A. Aug. 10, 1928. Liquid-fuel furnaces.-Apparatus for regulating the supply of liquid fuel and air to steam-boiler furnaces or furnaces for generating combustion products under pressure for power purposes comprises a piston 2 which in the case of a steam-boiler furnace is subjected to the varying pressure in the boiler through a pipe 3 and is adapted by the rod 8 and abutment 2<b> to actuate the fuel-supply valves of the burners and by the cross bar 9 the valves 9<a> and 9<b> of fuel and air supply apparatus. Upon a decrease of load on the engine 29 the pressure in the boiler 27 rises and actuates through a pipe 17 and piston 11 a valve 13 in the exhaust pipe 13<a> of the cylinder 1. Simultaneously the governor 6 closes the valve 4 in the steam supply pipe 3 and the piston 2 moves to the right under the action of a spring and closes the fuel and air supply valves. The movement of the piston 2 is controlled by a dashpot cylinder 8<c> having its ends in communication through pipes 14<c> controlled by valves 8d, 14<a>. Should it be necessary to close suddenly the fuel supply valves upon an increase of speed of the engine, the governor 6 actuates through a rod 5<c>, provided with a lug 5f, the stop valve 7a and also through a catch 26 a valve 14 in the pipe 3 and the valve 14a in the pipe 14<c>. The damping action of the cylinder 8<c> is thus reduced and the cylinder 1 is opened to exhaust allowing quick movement of the rod 8 for permitting closure of the air and fuel supply valves. A modification is described wherein the piston 2 is subjected to the pressure of furnace combustion gases for driving a turbine. Where the boiler supplies several steam using appliances and it is not possible to use a governor such as 6, the steam supply pipe may be provided with a loaded flap 21, Fig. 2, adapted to actuate the valve 4 in accordance with steam pressure changes.
Patent GB-463169-A (GB)
Title: Improvements in arrangements for the propulsion of watercraft
IPC: B63H16/00
Filed: 1936-08-22
Abstract: 463,169. Propelling by reaction on curved aquafoils. BUDIG, F. Aug. 22, 1936, No. 23128. Convention date, Aug. 24, 1935. Addition to 452,719. [Class 114] In propulsion apparatus according to the parent Specification, the operating linkage is modified so that the blades are mounted on levers pivoted on horizontal axes parallel with the axis of the boat and are connected directly by links to a shaft oscillating about a fixed horizontal axis at right angles to the axis of the boat. Upon a framework 30 is supported a horizontal transverse shaft 31 which is connected by a bell-crank lever 32 with the hand operating lever 16 and with rods 19, 20 which pass to levers on the horizontal shafts 4 to which levers are secured the blade shafts 40. The shaft 31 may also be actuated through levers by pedals. As an alternative, the connection between the shaft 31 and 4 may be provided by toggle levers 32, 39 so that two oscillations of the blade are provided for each oscillation of the hand lever. The blade members are eccentrically mounted with respect to the pivots 4 and also their arms 40 are freely mounted on the pins under spring action 41 so that they may yield vertically on meeting an obstruction. In addition, they are pivotally supported so that they may yield in the rearward direction on meeting a horizontal obstruction. Arrangements are also made for reversing the blade for obtaining reverse motion of the boat. In one construction, the exterior shape of the boat conforms with the shape of the blade which may then be housed up against the side of the boat when not in use. In this position, it is protected by a rubbing strake placed on the boat. For the purpose of keeping the blade as near as possible to the boat, the pivoted point may be placed well in-board and the arm 40 arranged to move in an opening suitably enclosed in the side of the boat.
Patent GB-1206668-A (GB)
Title: Optical contour tracing arrangement
IPC: G01B11/30
Filed: 1968-05-16
Abstract: 1,206,668. Photo-electric tracing apparatus. COMPAGNIE INDUSTRIELLE DES LASERS. May 16, 1968 [May 18, 1967], No.23450/68. Heading G1A. The contour or shape of a surface 7 is traced photo-electrically by determining the distance from a reference position of individual points on the surface. In one arrangement, Fig.1 a laser beam is enlarged by lens system 2, 4 and brought to a focus at a point on or near surface 7 by lens 5. Light diffusely reflected from the surface passes back through lens 5 and is reflected by semitransparent plate 9 into a microscope 10, the output aperture 11 of which is of a predetermined diameter e.g. 5Á equivalent to the diameter of the point on the surface 7 to be investigated. A photocell adjacent the aperture detects variations in light intensity due to non-coincidence between the image formed by the lens 5 equivalent to its focal point and the point 8 on the surface at which the focused light beam is incident. The output is used to move lens 5 along the optical axis of the system until coincidence is obtained, when a measure of its position is representative of the position of the point on the surface. Different points or the surface are investigated by lateral movement of lens 5 on a carriage and the position of lens 5 recorded for each point. In a second arrangement, Fig.2 (not shown), the diffusely reflected light is incident on two semitransparent plates (15, 16) replacing plate 9 of Fig.1. The beam from one plate is focused by a lens (19) at a point in front of a first aperture diaphragm (24) associated with a first photo-cell 26, and the beam from the second plate is focused beyond a second aperture diaphragm (25) associated with a second photo-cell 27. The photo-cell output form the inputs to a differential amplifier which controls movement of lens 5 until the photo-cell outputs are equal, indicating coincidence of the image formed by lens 5 and the surface 7. In a modification of the Fig.2 arrangement, Fig.3, (not shown), the diffusely reflected light from the surface 7 is not analysed after passing back through lens 5 but is examined at an angle to the optical axis of the lens 5, being passed through an identical lens 5<SP>1</SP>, attached for movement with lens 5, and directed to the two lens, aperture and photo-cell arrangements by a semi-transparent plate (15) and a plane mirror (16) respectively. In a further arrangement, Fig.4  (not shown) a single semi-transparent plate as in Fig.1 is used to direct the diffusely reflected light to a beam splitting member. This comprises a screen (30) dividing the beam into two halves for passage through a lens (31) by which the beams are focused in front of and behind two apertures (24, 25) as in the Fig.2 arrangement. The screen can be behind the lens (31) or be a metallized area thereon. The lenses used to focus the diffusely reflected light before detection by the photo-cells, may be replaced by concave mirrors.
Patent GB-1384745-A (GB)
Title: Method of preparation of single-crystal films
IPC: C30B19/12
Filed: 1972-05-13
Abstract: 1384745 Single crystal thin film COMMISSARIAT A L'ENERGIE ATOMIQUE 18 May 1972 [25 May 1971] 23472/72 Heading C1A A single crystal thin film is prepared by placing a single crystal substrate in a deposition zone of an aqueous solution containing compounds which undergo a double decomposition reaction to form in situ the composition of the single crystal film the compounds being added to a high temperature dissolution zone of the solution where they dissolve and decompose to form the composition of the single crystal thin film which is transported to the deposition zone where it crystallizes on to the substrate. The thin film may be a synthetic double oxide having a garnet structure and a formula T 3 M 5 O 12  where T represents yttrium or a rare earth element or atomic number 62 to 71 and M represents Fe, Al, Ga or a transition element of atomic number 21 to 28 and may be prepared from an aqueous solution of a mixed oxide of a metal and of an alkali metal and a hydroxide or a salt of rare earth or of yttrium contained under high pressure in an autoclave at a temperature of 400-550 C. such that the thin film composition is formed by double decomposition and is transported to the upper cooler (e.g. 20 to 70 C. cooler), portion of the autoclave where it deposits on a seed crystal (e.g. Gd 3 Ga 5 O 12 ). Reference has been directed by the Comptroller to Specification 1,137,950.
Patent GB-1385547-A (GB)
Title: Process for the production of polymers of episulphides
IPC: C08G75/08
Filed: 1972-05-18
Abstract: 1385547 Polythioethers SNAM PROGETTI SpA 18 May 1972 [24 May 1971] 23532/72 Heading C3R Polymers are formed by polymerizing one or more episulphide monomers in a polar solvent in the presence of a preformed catalyst formed by reaction between (a) an alkali metal or a hydride or alkyl derivative thereof, and (b) a dialkyl, dicycloalkyl or diaralkyl sulphoxide or sulphone. Polar solvents include hexamethylphosphoramide, dimethylsulphoxide, N,N-dimethylacetamide, tetrahydrofuran, dimethylformamide, pyridine, acetonitrile, dioxane, morpholine, formyl-morpholine and/or ethers. Specified episulphides are ethylene, propylene, styrene, cyclohexene and isobutene sulphides, 1 - allyloxy - 2,3 - epithiopropane, butadiene- 1,3-monoepisulphide and 1,2-epithio-4-vinylcyclohexene. Uses.-The products may be vulcanized, e.g. using ZnO, sulphur, stearic acid, mercaptobenzothiazole and tetramethylthiouram disulphide, to produce oil-resistant rubbers.
Patent GB-1357066-A (GB)
Title: Method for debonding
IPC: H01R9/16
Filed: 1972-05-19
Abstract: 1357066 Unjointing; soldering INTERNATIONAL BUSINESS MACHINES CORP 19 May 1972 [29 June 1971] 23564/72 Headings B3V and B3R An element bonded to a base is released from the base by ultrasonic vibrations. Soldered connections may be released by the method. As applied to releasing a ground rail 10, Fig. 1, from a circuit board 11, the rail is clamped by screws 14 to a fixture 13 which is attached by a horn 15 to an ultrasonic transducer 16. Springs 17 apply pressure between the fixture and circuit board while the transducer is swept through a range of frequencies or tuned to the resonant frequency, the vibrations being effected to soften the solder and release the connection. If desired, heat may be applied in the region of the bond, or the fixture may be heated or preheated. Axial, lateral or rotary vibrations may be used. A pin may be detached from a circuit board using a connecting socket clamped to the pin by a screw (22), Fig. 2 (not shown). The process may be used to detach a circuit module (Fig. 3).
Patent GB-985680-A (GB)
Title: Method of and means for mixing bread or similar doughs
IPC: A21C1/06
Filed: 1962-06-19
Abstract: The ingredients of a bread dough are initially mixed under conditions of gentle agitation, the resulting homogenous mixture immediately enclosed in an enclosed mixing space the volume of which is such that the mixture completely fills it, the mixing completed by vigorous agitation, and the dough divided, all the operations being carried out in continuous succession without intervening fermentation period. In a modification the volume of the mixing space may be slightly greater than that of the dough so that a controlled amount of air is entrained.  The process may be carried out in an otherwise conventional dough-mixing apparatus having a pressure plate to compress the dough (see Division B1). The ingredients comprising a yeast brew (which may be pre-fermented to reduce the amount of yeast required), buffering agent, flour, shortening and oxidiser are incorporated for about 30 seconds at a speed less than 100 r.p.m., the pressure plate brought down and mixing continued at a speed of at least 100 r.p.m. for 2-3 minutes.  The preferred pressure range is 0-20 p.s.i.  The dough is then divided, proofed in tins for 35-60 minutes and baked.
Patent GB-223552-A (GB)
Title: Improvements in or relating to blading for steam or gas turbines
IPC: F01D25/32
Filed: 1924-10-06
Abstract: 223,552. Erste Br³nner Maschinen- Fabriks-Ges. Oct. 18, 1923, [Convention date]. Blades. - To provide, for the different velocity conditions of the water particles in the low-pressure stages of a steam (or gas) turbine, the guide blades a are twisted so that their outlet angles diminish towards the steam and water zone at the radially outer ends, and the rotor blades b have their inlet edges correspondingly rounded off. Eddy losses are further reduced by the provision of bridge pieces c between the guide blades, dividing them into inner and outer tiers.
Patent GB-707953-A (GB)
Title: A combined head rest and sun shade
IPC: A45B23/00
Filed: 1952-09-19
Abstract: 707,953. Head rests. GRAHAME, S. A. Sept. 17, 1953 [Sept. 19, 1952], No. 23619/52 Class 52(2) A collapsible combined head rest and sun shade comprises a collapsible stand 1, 2 between the two ends of which is carried a strip or band 7 of flexible material which constitutes the head rest and a canopy 8 mounted on the stand. The strip 7 is mounted on arms 6 pivotally carried by bolts having fly nuts 3 which bolts also serve as Divots of the collapsible stand and as supports for the pivoting arms 9 of the canopy. The bars 2 of the stand are connected bv flexible material 4 which may have a pocket 5.
Patent GB-482438-A (GB)
Title: Improvements in or relating to patterned rib fabrics
IPC: D04B1/10
Filed: 1936-08-29
Abstract: 482,438. Knitting. HOLMES, H. H., and WILDT & CO., Ltd. Aug. 29, 1936, No. 23716. [Class 74 (ii)] A rib knitted seamless tubular fabric comprises a basic rib fabric in which patterns have been produced independently on both surfaces. In one form, Fig. 1, tuck stitches are produced in both the plain and the rib wales C, D. Alternatively patterning may be obtained by float or miss stitches, or by a combination of tuck stitches and float stitches, or by the use of different coloured threads. The fabric may have in succession lengthways a zone N of non-patterned rib fabric, a zone P of patterned rib fabric and courses W of stitches to form welts. Separating courses S may be formed at intervals in the length of the fabric. Specifications 247,339, [Class 74 (ii)], 437,992, and 473,181 are referred to.
Patent GB-287588-A (GB)
Title: Process and apparatus for forming pin points and cutting edges
IPC: C25F3/02
Filed: 1926-09-27
Abstract: 287,588. Coles, S. O. Cowper-. Sept. 27, 1926. Metals, removing.-Points or edges are formed on metal blanks by electrolytic removal of metal, the blanks being connected as anodes, and held with their points or edges directed towards the cathode. In the apparatus shown the blanks are held with the ends to be pointed directed downwards between pairs of bars extending across a frame, situated above a tank E<1>, Fig. 2, mounted on a trolley E. The cathode consists of a large number of bars of triangular section extending transversely along the bottom of the tank and resting on longitudinal conducting bars. The frame is provided with rollers b seated on inclined tracks C and is connected by a connecting-rod to a crank disc G geared to a power-driven disc h, thereby being given a vertical and a lateral reciprocating motion. The reciprocating gear is mounted on a frame K which is mounted on a screw J actuated by the reciprocating motion through a ratchet h<2> and ratchet wheel j and a worm and wormwheel, not shown, so as to superimpose a reduced continuous motion up or down upon the reciprocating motion of the frame. The frame may be restored to its initial mean position by a handwheel or automatically. Alternatively the level of the electrolyte may be lowered during the operation. The blank-holders may consist of main bars D, Fig. 5, and gripping layers done of which is of brass and is grooved to receive the blanks, the other being of lead or rubber. The bars are secured together by hand-wheels d' and are secured to the frame B by hand-wheels d<2>. The blanks may be staggered after being placed in position in the holder by means of a comb, the blank-holders being reversed in the frame after formation of one set of points. The current may be reversed to clean the surfaces at the end of each pointing operation. The edges may be formed with a step or shoulder instead of a gradual taper by appropriate regulation of the vertical motion or level of the electrolyte. Specification 13980/07 is referred to.
Patent GB-277359-A (GB)
Title: Improvements in back-pedalling brake mechanism for bicycles, motor-cycles and the like
IPC: B62L5/00
Filed: 1927-09-09
Abstract: 277,359. Fillettaz, L., E. L. Sept. 11, 1926, [Convention date]. Back-pedalling brake and free-wheel arrangements.-The brake-operating element is connected to a band encircling a drum which is mounted eccentrically on the pedal-crank spindle and is rotated through a small angle by back pedalling. In the construction shown in Figs. 1 and 3, the brake-operating member 8 is connected to a band 6 encircling the drum 5 which is mounted on a fixed part 4 of the cycle eccentrically to the pedal-crank spindle 1. During back-pedalling, the ratchet-wheel 2 fixed to the spindle 1 engages the pawl 9 pivoted in the drum 5, the pawl being engaged with and disengaged from the ratchet-wheel by a pin-and-slot connection with a plate 11 having frictional engagement with the boss 16 of the pedal crank or with some other part rotatable with the spindle 1. In a modification, the pawl is replaced by a roller which is wedged between the ratchet-wheel and the drum and the operating member is led directly round the drum and the end anchored to the cycle frame.
Patent GB-442745-A (GB)
Title: Improvements relating to apparatus for recording sound
IPC: B23Q11/00
Filed: 1934-08-18
Abstract: 442,745. Sound-recording machines. SCHULER, H. A. H., 1, Gartenstrasse, St. Georgen i. Schwarzwald, Germany. Aug. 18, 1934, No. 23883. [Class 40 (ii)] Relates to sound-recording apparatus of the kind in which a groove is cut in a blank by a stylus or cutter vibrated in accordance with the sounds to be recorded and is more particularly applicable to apparatus intended for use in home recording such as described in Specification 419,520. According to the invention, a roller is provided, driven from the motor which drives the turntable or other support for the blank, for winding up the thread resulting from cutting the groove. As shown, a vertical spindle 1 is rotatably carried in the arms of a U-shaped bearing member 2, the arm 5 of which is pivoted at 7 to a plate 6 fixed to the motor board 3 so that a friction disc 9 carried by the spindle can be moved into or out of contact with the edge of the turntable 4. The member 2 is pulled towards the turntable by a spring 19 but can be retained in a position away from the turntable by moving it past a dead-centre position. The spindle may alternatively be driven by a small belt, flexible shaft or gear-wheels. The roller on which the thread 13 is adapted to be wound is formed as a metal sleeve 11 provided with an exterior sleeve 15 of rubber, the sleeves whilst being driven by the spindle 1 being arranged to slip thereon to avoid breaking the thread. A friction pad 14 may be provided in the end of sleeve 11 and a flat or cambered disc is provided at one or each end of the sleeve, e.g. as shown at 12, to prevent the thread passing off the sleeve. A shield 16 supported from the base plate 6 by legs 18 is provided between the lower disc 12 and the member 2 in order to protect the driving mechanism or alternatively this mechanism may be wholly enclosed.