baber/WOPTO huggingface dataset:
Patent GB-1155576-A (GB)
Title: Circuit Arrangement for Signifying the Upper and Lower Limits of a Voltage
IPC: H03K3/2893
Filed: 1966-09-15
Abstract: 1,155,576. Transistor circuits for indicating different voltage levels. FELTEN & GUILLEAUME FERNMELDEANLAGEN G.m.b.H. 15 Sept., 1966 [15 Sept., 1965], No. 41199/66. Heading H3T. In an electronic circuit, including triggering circuitry providing an output signal signifying the excursion of an input signal through prearranged upper and lower limits, the circuit includes a phase inverter formed by a complementary pair of transistors T1, T2 having a reference voltage U v  connected to the base of T2 and resistors R1, R2 and R3, the output from the inverter is connected to the triggering circuitry, such as Ti2, for triggering it when the input signal crosses the lower limit and a connection is provided from the input circuit of the transistor T1 to the triggering circuitry, such as Ti1 for triggering it when the input signal crosses the upper limit. The high level trigger circuit Til may be fed from the base circuit T1 as shown or alternatively may be fed from the emitter of transistor T1 (Figs. 2-6, not shown) so as to reduce the non-linear load on this circuit. In order to reduce the effects of the base-emitter voltages UBE2, UBE1 diodes (D1) and (D2) can be connected in the base and emitter circuits of the transistors T1 and T2 (Figs. 3 and 4, not shown). Also a resistor (R v ) may be included between the diode (D2) and the input to the high level trigger circuit Til so as to make the internal resistances of the voltage sources (U2 and U3) which feed the trigger circuits Ti2, Til equal. The two trigger circuits Ti1 Ti2 may be identical and the relative hystereses at the input of the circuit for the two limits may be equal. The trigger circuits Til and Ti2 may be replaced by a single trigger circuit (Figs. 5 and 6, not shown), which is fed via diodes (D3, D4). Diodes (D1a, D1b) compensate for the influence of the base-emitter voltage of the transistor T2 and of the effect of temperature on a Zener diode (D5) which provides the auxiliary voltage source U v . Resistors (R6 and R7) are included to set the levels.
Patent GB-847349-A (GB)
Title: Integrating motor control circuit
Inventor: CORBIN ALFRED
IPC: H02P25/18
Filed: 1958-12-22
Abstract: 847,349. Control of motors. ACF INDUSTRIES Inc. Dec. 22, 1958, No. 41351/58. Class 38 (3). [Also in Group XXXVI] An input signal controls a servo-system 15 (Fig. 1) to correspondingly adjust a potentiometer 18 to energize contact 6 of a relay 11 over resistance 20; the opposite contact 4 being connected to D.C. motor 1 and the relay being operated by a signal 12 of cyclically variable amplitude to alternately charge capacitance 9 over resistance 20 and to discharge it into the motor, which rotates in successive steps (Fig. 2, not shown) through an angle 0 representing the time integral of the input. The signal 12 may comprise a train of random pulses, and a further relay-capacitance-resistor may be provided to make the circuit system bi-directional.
Patent GB-1195285-A (GB)
Title: Apparatus for Shifting Laser Output Frequency
IPC: G02F1/01
Filed: 1967-09-11
Abstract: 1,195,285. Light modulators. WESTING- HOUSE ELECTRIC CORP. 11 Sept., 1967 [17 Oct., 1966], No. 41379/67. Heading H4F. The invention relates to apparatus including electronic Doppler effect means for shifting a given laser frequency by continuously tunable amounts, for heterodyning from a given laser frequency any desired frequency (frequency multiplication), and for dynamically frequency modulating a laser beam. In operation a monochromatic coherent (laser) beam is transmitted by means of a single or multiple traversal through a medium the refractive index of which is arranged to vary linearly with time so that the optical path length varies as a function of time, resulting in a shift in beam frequency by an electronic Doppler effect. In a first embodiment, Fig. 2, the electronic Doppler effect device 26 comprises a ferroelectric material 28 between plates 30 to which a periodic radio-frequency voltage of given frequency is applied. A gate such as a Kerr cell 34 is arranged to allow passage of laser beam 22 when the periodic voltage causes the R.F. field between plates 30 to experience a linear change with time i.e. as the R.F. field passes through zero, Fig. 3 (not shown). Material 28 may comprise BaTiO 3 , LiNbO 3 , SbSI or potassium tantalum niobate. By coating the ends of dielectric 28 with reflective dielectric films so that beam 22 passes repeatedly therethrough by multiple reflections the effective optical path length is increased, Fig. 4 (not shown), and by using a few laser lines tuned by such an electronic Doppler effect device the entire electromagnetic continuum from microwaves to ultraviolet may be covered. By varying the angular driving frequency of the R.F. voltage a laser beam may be tuned over 4000 gigacycles. The duty cycle of operation may be enhanced by driving the dielectric R.F. voltage E in a sawtooth pattern. The device of Fig. 2 may be used as a frequency multiplier. In a further embodiment, Fig. 5, a laser beam 50 is split into two beams which are directed through electronic Doppler effect devices 56 and recombined in mixer 58. The two devices 56 may be driven by radio frequencies which are not equal and the two beams with resulting frequencies v 1  and v 2  are mixed in non-linear medium 58 so that the parametric frequencies of the sums and differences of the averaging beam frequencies are generated. By utilizing the same driving voltage for varying the two electronic Doppler shift devices 56 in phase opposition the parametric frequency of interest generated equals 2#v, the undesired frequencies being filtered out possibly by medium 58. This embodiment may be used as a tunable monochromator. The driving voltage may be linearly varied with a superimposed non-linear modulation over the linear part of the driving voltage for variance of the refraction index to impose additional information on the emitted beam. Instead of using ferro-electric material device 26 may comprise a crystal of suitable orientation or a semi-conductor responsive to electronic beams, free carriers or light injection.
Patent GB-901767-A (GB)
Title: Boring bars
Inventor: COLEY SAMUEL ERNEST
IPC: B23B29/02
Filed: 1959-12-08
Abstract: 901,767. Boring - bars. COLEY BROS. (TOOLS) Ltd. Jan. 3, 1961 [Dec. 8, 1959], No. 41615/59, Class 83 (3). [Also in Group XXXIV] A boring bar comprises a shank 10, a cutting tool 16, and an intermediate sleeve-like ball cage, the balls 28 projecting inwardly and outwardly of the sleeve. The recesses in the sleeve prevent outward escape of the balls which are arranged helically. A felt wiper 25 prevents dirt reaching the balls when the tool is passed into a guide bush which slightly compresses the balls. The toolholding part 15 may be detachable and the shank 10 may be cylindrical. The tool may be of carbide with a micrometer adjustment.
Patent GB-923595-A (GB)
Title: Improvements in and relating to the production of acrylic esters
Inventor: BROWN CHRISTOPHER JOHN
IPC: C07C69/54
Filed: 1960-12-03
Abstract: A high-boiling base product containing polymeric material which is obtained in the production of an alkyl ester of acrylic acid by reaction between an alkanol and acrylic acid is depolymerized by heating to a temperature of about 200 DEG  to about 350 DEG C. in the substantial absence of molecular oxygen, and a fraction containing the reformed monomers is taken off overhead. The base product may previously be treated to remove any volatile monomers present therein, for example by treatment in a film evaporator as disclosed in Specification 923,594. Atmospheric pressure is preferred for the cracking reaction but higher or lower pressures may be used and a stream of inert gas such as nitrogen may be passed through the liquid material being cracked. A cracking catalyst may be present and may be the esterification catalyst present in the base product as withdrawn from the esterification reactor.  Examples are given of the treatment of a base product obtained according to Specification 923,594, the products being principally ethyl acrylate and acrylic acid.ALSO:A high-boiling base product containing polymeric material which is obtained in the production of an alkyl ester of acrylic acid by reaction between an alkanol and acrylic acid is depolymerized by heating to a temperature of about 200 DEG  to about 350 DEG C. in the substantial absence of molecular oxygen, and a fraction containing the reformed monomers is taken off overhead.  The base product may previously be treated to remove any volatile monomers present therein, for example by treatment in a film evaporator as disclosed in Specification 923,594.  Atmospheric pressure is preferred for the cracking reaction but higher or lower pressures may be used and a stream of inert gas such as nitrogen may be passed through the liquid material being cracked.  A cracking catalyst may be present and may be the esterification catalyst present in the base product as withdrawn from the esterification reactor.  Recovered acrylic acid may be recycled to the esterification.  Examples are given of the treatment of a base product obtained according to Specification 923,594 and specific products obtained by the cracking reaction are acetaldehyde, diethyl ether, ethanol, ethyl acetate, ethyl acrylate, acetic acid, acrylic acid, ethyl b -ethoxypropionate and ethyl b -acetoxypropionate.
Patent GB-690808-A (GB)
Title: Improvements in water analysis apparatus incorporating improvements in colorimeters and turbidimeters
IPC: G01N21/79
Filed: 1949-08-22
Abstract: 690,808. Reciprocating motors. ELLIS, R. A. E., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 27. 1950 [Aug. 22, 1949], No. 21736/49. Class 35. [Also in Groups XVIII, XXIV, XXIX and XL (b)] A reversible step-by-step motor comprises a ratchet-wheel 401 which can be stepped in either direction by electromagnetically-operated pawls 410, 409 playing between stops 416, 417 which are adjustable together and individually adjustable stops 414, 415. A spring-pressed pin 423 holds the wheel in any set position.
Patent GB-1303747-A (GB)
IPC: B23K7/00
Filed: 1970-09-02
Abstract: 1303747 Flame cutting MESSER GRIESHEIM GmbH 2 Sept 1970 [2 Sept 1969] 41939/70 Heading B3V In a carriage for a co-ordinate flame cutting machine, the horizontal and/or vertical position of a track 4 fixed to a crossbeam 3 for guiding the torch 15 is adjustable. The tubular track 4 is provided with guide rails 11, 12 for a transverse torch carriage 13 and is connected to tubular brackets 10, attached to the crossbeam 3, by means of threaded bolts 25, 26 and washers 41, 42. With the bolts 25, 26 slackened, the track 4 is adjustable horizontally by moving rows of threaded pins 23, 24 and vertically by moving a row of pins 22.
Patent GB-1459388-A (GB)
Title: Buildings
IPC: E04D13/15
Filed: 1972-09-11
Abstract: 1459388 Prefabricated room units MEDWAY BUILDINGS Ltd 11 Dec 1973 [11 Sept 1972] 42098/72 Heading E1A A modular room unit comprises a rigid self supporting space frame having four vertical columns arranged at the corners of a rectangle and horizontal members connecting the columns. A rectangular roof or ceiling panel and a floor panel close the top and bottom faces of the frame respectively and at least two wall panels are releasably secured to the adjacent perpendicular frame sides. All the panels lie within the envelope bounded by the exterior surfaces of the columns in plan view. Each of the columns has a sliding leg extendable downwardly and means for resisting upward movement of the leg. The panels may be of hardboard, metal, chipboard or glass fibre reinforced plastics sheets 22, 23 separated by foam plastics 24, the sheets on each side may be of different materials and the panels may have timber frames 25 secured to the framing members by nuts 31 on threaded studs welded to the framing members. The prebored panels may serve as templates for the fixing of the studs.
Patent GB-973323-A (GB)
Title: Improvements in or relating to a float-operated valve
IPC: F16K31/26
Filed: 1962-11-07
Abstract: 973,323. Valves. A. E. ANTUNEZ. Nov. 7, 1962, No. 42157/62. Heading F2V. In a float-operated valve, e.g. for toilet flush tanks, a quick closing action is obtained by utilizing the inlet pressure to apply a substantially constant force in opposition to that of the ball valve. The action of float-operated arm 24, via roller 21, upon vertically slidable stem 26, carrying valve washer 32 to engage seating 8 of inlet 7, is resisted by the inlet pressure upon retarding disc 31 which, in fully open position, lies across the mouth of cylinder 11, adjustable by screw 22. The rubber disc 31, though relatively stiff, possesses limited flexibility to deflect and compensate for increased line pressure. The upper valve housing 2 is provided with a ring of antisyphon openings 25, closable by the upper of antisyphon washers 28 and 29. U.S.A. Specification 2,635,622 is referred to.
Patent GB-1074558-A (GB)
Title: A bottle assembly
IPC: B65D21/02
Filed: 1965-10-05
Abstract: 1,074,558. Bottles. FERRANIA S.p.A. Oct. 5, 1965 [Oct. 7, 1964], No. 42286/65. Heading B8D. A bottle assembly comprises a main bottle (2), Fig. 3, round the neck of which is seated an auxiliary bottle (1) of annular form. The bottle (1) of plastics or glass, may have a square, rectangular or circular outer peripheral outline in plan view.
Patent GB-1101579-A (GB)
Title: Process for the separation of isopropylphenols
Inventor: BERTHOLM GUY FRANCOIS MARIE
IPC: C07C37/68
Filed: 1966-09-22
Abstract: The separation of p-isopropylphenol from the m-isomer is effected by sulphonating the mixture with conc. H2SO4, extracting with benzene, and recovering the p-isomer from the organic phase by distilling off the benzene, allowing the residue to stand and separating the precipitate of pure p-isomer.  The aqueous phase deposits crystals of sulphonated m-isopropylphenol, which are separated and hydrolysed with steam/H2SO4 to the phenol.  Where the initial mixture contains also diisopropylphenol, its solution in aq. alkali is benzene-extracted to remove the latter, and the alkaline phase treated with strong acid to give the mixture to be sulphonated.
Patent GB-944690-A (GB)
Title: Improvements in or relating to vehicle stretcher-stand assembly
IPC: A61G3/00
Filed: 1962-11-09
Abstract: 944,690. Ambulances. N. ASPEHAUG. Nov. 9, 1962, No. 42374/62. Heading B7B. An inverted-U-shaped frame 1, 2 secured to a vehicle floor supports pairs of runners 7, 7<SP>1</SP> which carry trolleys 11 provided with wheels 12, 13 engaging the runners. To the trolleys 11 are pivoted at 13 horizontal arms 15 which carry supports 18, 19 and 24 for the forward handles 17<SP>1</SP> of a stretcher so that by pushing the trolleys along the runners 7, 7<SP>1</SP> the stretcher may easily be loaded into position. The rear end of the upper stretchers are supported by chains 26, 30 whilst the lower stretchers rest on supports 31 secured to the cross member 3 of the frame 1, 2.
Patent GB-973145-A (GB)
Title: New 18,20-lactones of 20-hydroxy-pregnane-18-acids
IPC: C07J75/00
Filed: 1960-12-09
Abstract: The invention comprises the 18,20-lactones of 20b -hydroxy-pregnane-18-acids which are unsubstituted in the 11-position or which contain a free or esterified 11a -hydroxyl group, an 11-oxo group, a 9, 11-double bond or a 9, 11b -oxido group, and which are substituted in the 3-position by a free or esterified hydroxyl group or a free or ketalized oxo group.  They may be of the 5a - or 5b -series and may be 19- nor compounds, and they may contain double bonds and further substituents in one or more of positions 1, 2, 4, 5, 6, 7, 8, 9, 12, 14, 15, 16, 17 and 21.  Substituents referred to are oxido groups, free or functionally converted hydroxyl or oxo groups, alkyl groups and halogen atoms.  The lactones may be prepared by the process described in Specifications 973,143 and 973,144.  In the products, esterified 11a -hydroxyl groups may be hydrolyzed and the free 11a -ols oxidized to 11-ketones; D 5-3-ketals may be hydrolyzed to D 4-3-ketones or these ketalized; 3-acylates may be hydrolyzed and oxidized to 3-ketones; D 4-double bonds (and possibly D 1-double bonds) may be introduced by bromination and dehydrobromination; D 5-3-acylates may be converted to D 4-3-ketones; oxygen functions may be introduced into the 11-position by microbiological oxidation, especially with fungi of the order Mucorales, Rhizopus or with Aspergillus ochraceus and 11a -hydroxyl groups may be eliminated by conversion to sulphonic acid esters and subsequent treatment with an anhydrous base, to form a 9, 11-double bond.  Examples are given, and the conversion of products of the invention to aldosterone and its derivatives is described.  A by-product in one example is 3b -acetoxy-20b -hydroxy-18, 20-oxido-5a -pregnane which on hydrolysis gives the 3b -ol.  In another example, -reduction of the lactone of 3b , 20b -dihydroxy 5a -pregnane-18-acid gives 3b , 18,20b -trihydroxy-5a -pregnane. Specification 973,146 also is referred to.  Reference has been directed by the Comptroller to Specification 946,659.
Patent GB-1177047-A (GB)
Title: Improvements in and relating to Containers
IPC: B65D25/20
Filed: 1968-09-09
Abstract: 1,177,047. Portable container. SOBREFINA S.A. 9 Sept., 1968 [25 Sept., 1967], No. 42728/68. Heading B8D. A container for pressurized contents, e.g. beer, has the body formed wholly or partly of plastics material of such resilience that it will return to its original shape at a sufficiently slow rate after having been deformed to safeguard against ejection of liquid from the container. The material may be polyvinyl chloride containing an elastomer such as acrylbutadiene-styrene and coated with a gasimpermeable layer. An outer sleeve 1, e.g. of cardboard or metal, prevents expansion of the container in the transverse direction due to rise of pressure inside, but allows longitudinal expansion to position 3. Dissolved gas is liberated by the liquid 4 and forms a gas cushion 6 which prevents spillage when the cap 5 is removed. Spillage is also prevented by the slow rate of return to shape from deformation.
Patent GB-1489596-A (GB)
Title: Composite metal structure
IPC: A47B96/14
Filed: 1974-10-02
Abstract: 1489596 Metal frameworks M LAVOILLOTTE 2 Oct 1974 [3 Oct 1973] 42799/74 Heading A4H [Also in Divisions E1-2] A composite metal structure, e.g. for single or double fronted shelving, comprises at least three U-sectional uprights 1', 1', 1", Fig. 1, each arm of the U having two vertical rows of identical aper tures 2, 3, 2', 3', 2", 3", at least two support members 4, 4' connecting respective pairs of uprights, and fastening means engaging in apertures of the rows and co-operating with or provided on the support members, the inner ends of members 4, 4' defining a space 7 for receiving a cross-member. In Fig. 1 each row comprises one vertical column of slots, and in Fig. 2 each row comprises two vertical columns of circular apertures 9, 10 or 10A, 9A. The support members 4 4' may be of angle section and be apertured in one limb, e.g. at 5, 6 5', 6', for the reception of screws, or may include lugs for insertion in the apertures 3, 2' 3', 2". They may also have apertures in their other limbs for supporting shelves.
Patent GB-1449041-A (GB)
Title: Applicator for pressure-sensitive adhesive fasteners
IPC: B31B1/90
Filed: 1973-09-12
Abstract: 1449041 Garment fasteners MINNESOTA MINING & MFG CO 12 Sept 1973 [13 Sept 1972] 42912/73 Heading A3V [Also in Division B8]  A fastener 81 which comprises a folded tape 84 having pressure sensitive adhesive on one of its surfaces, is adhered to a diaper, towel, apron or bib 80 and has the adhesive on a free portion protected by a liner 82. For Figure see next column
Patent GB-1287587-A (GB)
Title: One-piece bundling tie
IPC: B65D63/10
Filed: 1969-08-28
Abstract: 1287587 Band-straps PANDUIT CORP 28 Aug 1969 [7 April 1969] 43002/69 Heading E2B A one piece tie for encircling a bundle of wires or the like comprises a flexible strap 101, a row of transverse teeth 115 on the undersurface of the strap being engageable with transverse teeth 155 on a pawl 150 pivoting on a wall of a frame 120 at one end of the strap the crest to crest distance of the pawl teeth being slightly less than the crest to crest distance of the strap teeth. The tie is made of synthetic resin. The hinge of the pawl 150 is flexible so that in the clamping position of the pawl, the pawl is displaced downwardly, to lie within the frame as shown in Fig. 7. The strap has a section 118 of reduced thickness adjacent the frame to allow the frame to pivot with respect to the strap. The strap has a detent 109 on the top surface and spaced gripping projections 108 on the undersurface. In one modification the hinge 251, Figs. 9 to 11 (not shown) has a cylindrical cross section and the teeth of the pawl are convex and stop short of the sides of the pawl, the planar sides of the pawl diverge and the side walls of the frame are shaped complementarily and have inclined side guiding rails for the strap. In another modification an abutment wall of the frame has a flexible tab 370 Figs. 12 to 14 (not shown) to urge the end portion of the strap towards the pawl. In a further modification the hinge pivots on the abutment wall which provides .a stop surface 534 Fig. 21 (not shown) for the hinge. The strap teeth are then on the upper surface.
Patent GB-1182529-A (GB)
Title: A Flexible Electric Heating Mat for Electric Area Heating
Inventor: ZIEMEK GERHARD
IPC: H05B3/20
Filed: 1968-09-11
Abstract: 1,182,529. Mounting flexible heating elements. KABEL UND METALLWERKE GUTEHOFFNUNGSHUTTE. 11 Sept., 1968 [19 Sept., 1967], No. 43138/68. Heading H5H. A continuously manufacturable flexible, electric heating mat comprises a flexible heating element 1 secured in meander fashion to a plurality of flexible metal bands 4, the heating element 1 comprising a flexible heating conductor surrounded by heat-resistant electrical insulation disposed in a flexible, corrugated, longitudinally seam welded, metal sheath as disclosed in Specification 1,134,723. The heating element 1 may be secured to the bands by tying, riveting, soldering, welding or adhesive bonding. The bands may have transverse grooves to hold successive runs of heating element which may be secured therein by welding, deforming the mouth of the grooves or by a flat band secured to the grooved band to close the mouths of the grooves. Metal straps struck up from the bands or secured thereto may secure the heating element. A mat may be made by laying a metal-sheathed heating element in meander fashion in travelling grooved flexible metal bands. The mat may be laid in walls or floors.
Patent GB-1267757-A (GB)
Title: Hair brushes
Inventor: TO LEE WAI
IPC: A46B11/00
Filed: 1970-09-09
Abstract: 1,267,757. Pressurized dispensing containers. MARIGOLD ENTERPRISES Ltd. Sept. 9, 1970, No.43173/70. Heading F1R. [Also in Division A4] A housing 6 which removably holds an aerosol dispensing container 7 for perfume, lacquer or colouring matter is attached to the body 1 of a hair brush and has an L-shaped lever 17 pivotally connected to its rearward end with the face 20 of the lever resting against the base of the aerosol. When arm 21 of the lever is depressed, the operating button 12 of the aerosol is pushed against the end 11 of the housing causing the button to be depressed and the contents of the aerosol to be sprayed on to the hair while the brush is in use.