baber/WOPTO huggingface dataset:
Patent GB-772768-A (GB)
Title: New organo-silicon compounds
IPC: C07F7/18
Filed: 1955-03-07
Abstract: The invention comprises tert.-butylphenylchlorosilanes having the formula <FORM:0772768/IV(a)/1> where R is methyl or phenyl, and derivatives, including hydrolysation products, thereof.  In Example I, p-bromo-tert.-butyl benzene in diethyl ether is added to magnesium in ether and the resulting mixture is added to methyltrichlorosilane in ether to give para-tert.-butyl-phenylmethyldichlorosilane. Refluxing of this with acetic anhydride yields para-tert.-butyl-phenylmethyldiacetoxysilane which is hydrolysed in water to 1,3-di-(p-tert.-butylphenyl)-1,3-dimethyl-disiloxanediol-1,3.  In Example 2, phenyl para-tert.-butylphenyldichlorosilane is prepared in a similar manner to Example 1, and is hydrolysed to 1,3-di-(p-tert.-butylphenyl)-1,3-diphenyl-disiloxanediol-1,3.  10 parts of this are copolymerized with 190 parts of octamethyl-cyclotetrasiloxane in the presence of 0.064 part decamethyltrisiloxane and 0.08 part potassium hydroxide.  The resulting polymer is compounded with silica aerogel and cured by the action of benzoyl peroxide under heat to give a rubber. Octaphenylcyclotetrasiloxane may be substituted for all or part of the octamethyltetrasiloxane.  The rubbers may be used in the manufacture of gaskets which are to be subjected to high and low temperatures.  The chloro-silanes may also be reacted with Grignard reagents to substitute hydrocarbon groups for halogen atoms.
Patent GB-1526269-A (GB)
Title: Isoindole derivatives
IPC: C07D209/44
Filed: 1975-11-27
Abstract: 1526269 Amides and esters of 3-phenylisoindole-1-carboxylic acid F HOFFMANN-LA ROCHE & CO AG 27 Nov 1975 [28 Nov 1974 23 Sept 1975] 6707/77 Divided out of 1526267 Heading C2C The invention provides the title compounds in which the fused and unfused benzene rings, and the ring N-atom, may be substituted. Starting materials containing the same basic structure, as well as 1,3-dihydro-2H-1,4-benzodiazepin-2-ones, are also prepared.
Patent GB-647804-A (GB)
Title: Improvements in or relating to radio direction finders
Inventor: BRAILSFORD JOSEPH DOUGLAS
IPC: G01S1/02
Filed: 1948-03-03
Abstract: 647,804. Radio direction finding and receiving systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. March 3, 1948, No. 6711. [Classes 40 (v) and 40 (vii)] A radio direction finder of the switched cardioid type includes means, operated at the cardioid switching frequency, for rendering the indicating device effective for alternate halfwaves of the switching frequency and unresponsive at other times. The output from a loop aerial L and an omnidirectional aerial A are combined alternately in one phase and in the opposite phase to provide a switched cardioid reception pattern and the input therefrom fed to a receiver 1. The lowfrequency output of the receiver comprises, where the direction-finder is not aligned with the direction of the incoming signals, an A.C. voltage of switching frequency, Fig. 4 (a), surimposed on a D.C. output. The D.C. output is removed by feeding the composite signal through transformer 9, thus shifting the datum level to that indicated. The secondary circuit of the transformer includes a switch 3b which is operated in synchronism with the cardioid switching so that the circuit through centre zero meter 4 is completed during one half-cycle of the switching frequency output only. The signal applied to the meter is thus that shown at 4 (b) and a corresponding deflection is produced. At the correct alignment position there is no A.C. output from the receiver 1 and no indicator deflection while if the misalignment is to the opposite side of the wall to that first considered the signal applied to the indicator will be as at Fig. 4 (c) and produce a deflection in the opposite direction. The circuit of Fig. 3 is stated to be most suitable for a low resistance meter and a circuit in which the output of receiver 1 is fed to a valve whose anode circuit contains a condenser, resistance, and high resistance meter in series and wherein the switch shorts out the meter and resistance is described with respect to Fig. 5 (not shown). An arrangement whereby noise and interference are reduced due only to voltages in phase with the vibration of the switch producing a sustained output to the meter is described with reference to Fig. 6 (not shown). In this arrangement a noise reducing stage including a synchronous rectifying switch follows the receiver and the resultant output is then broken up by an interrupter before being passed through an amplifier stage to a meter circuit similar to that shown in Fig. 3.
Patent GB-1008037-A (GB)
Title: Partition construction
IPC: E04B2/78
Filed: 1961-09-22
Abstract: 1,008,037. Partition constructions. E. F. HAUSERMAN CO. Sept. 22, 1961 [May 25, 1961], No. 6786/64. Divided out of 1,008,036. Heading E1V. A partition construction comprises a framework of channel-shaped members 25 supporting one or more panels 62, 114 which are held to the frame members on each side by resilient strip 63, 64, of generally V-shaped cross-section and disposed with the open part of the V directed into the channel. In particular, the panels are of clear, translucent, or opaque glass and are provided on their horizontal edges with trim strips 101. The panels are inserted into the frame member 25 by a described method using temporary wedges and wooden blocks. The partition may be similar to that of Specification 1,008,036, the frame members being shaped and slotted and joined to each other with covering strips 73, 74 and key members 52.
Patent GB-1493517-A (GB)
Title: Acetoxysiloxane adhesion promoter and primer composition
IPC: C08J5/12
Filed: 1975-02-18
Abstract: 1493517 Acetoxy-terminated polysiloxanes DOW CORNING CORP 18 Feb 1975 [16 Dec 1974] 6791/75 Headings C3S and C3T A primer, particularly for bonding silicone rubber to metal, is obtained by mixing (1) an organosiloxane HO(Me 2 SiO) u (MeViSiO) v H, wherein the average value of u is 0-15, of v is 0-7, and of u+v is 2-15 with (2) an acetoxysilicon compound AcO(AcOSiR<SP>1</SP>O) n Ac, wherein R<SP>1</SP> is Me, Et or Vi and n is 1-6 on average, the ratio of AcO to OH groups being 3-10 : 1, and the product containing at least 1 Vi group. A primer composition contains 50-99À9 wt. per cent of an organic solvent of b.p. at most 150 C., the rest consisting of the primer, 50-100 wt. per cent, formed in situ or prevviously, an alkyl polysilicate, 0-50 wt. per cent, and an organic titanate, 0-50 wt. per cent, optionally also with dyes and a Pt catalyst. In examples the siloxanes or HO(MeViSiO) 4 H are mixed with ViSi(OAC) 3 , AcO(AcOSiMeO) 1À7 Ac or an mixture, or HO(Me 2 SiO) 4 H is mixed with ViSi(OAc) 3 , and the product dissolved in CCl 3 CH 3  or MEK, with 2/3 to 5/4 of its weight of each of polyethylsilicate and diisopropyl diacetylacetonyl titanate, and in one case a Pt catalyst. The solutions are used to prime Al surfaces before applying a Pt-catalysed silicone rubber composition containing a methyl hydrogen polysiloxane and a methyl vinyl or methyl vinyl trifluoropropyl polysiloxane.
Patent GB-198768-A (GB)
Title: Improvements in or relating to apparatus for softening toe portions of or for shoe uppers
IPC: A43D11/14
Filed: 1922-03-08
Abstract: 198,768. British United Shoe Machinery Co., Ltd., (Baynard, W. H.). March 8,1922. Softening.-In apparatus of the type described in Specifications 5946/13, 161,163 and 166,924, for softening toe portions of uppers, steam to be directed on the toe is generated from a widely distributed small bulk of water in a chamber nearly filled by heating means and provided with automatic means for maintaining the water level. Fig. 2 shows an apparatus wherein water in a trough 3 nearly filled by an electric heater 5 boils over into a trough 4 and is there further vaporized. A water bottle with a spring operated valve at its neck is inverted on a support 9, the valve being opened by engagement with a screw 119 and water passing by a pipe 11 to the trough 3. The last may rest on a support 35 and the toe portion of the upper be spread on canvas 15 supported by wire netting 20. Fig. 8 shows a modified apparatus wherein a dry heater 350 is added and the trough 4 dispensed with. Steam passes by openings 122, 131 to the outer leather portion. Hot dry air is constrained by a baffle 165 'impinge on the stiffener. A lamp is included in the electric circuit, to show when the heater is in action. A washer may be threaded on a rod beneath the toe receiving apparatus, to show which upper has been longest under treatment. Specification 18174/13, [Class 17 (ii), Boots and shoes, Construction of], also is referred to.
Patent GB-1412179-A (GB)
Title: X-ray densitometer
IPC: G01N23/04
Filed: 1973-02-12
Abstract: 1412179 Densitometers PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 12 Feb 1973 [15 Feb 1972] 6806/73 Heading G1A An image intensifier densitometer comprises an X-ray source 2, an X-ray image intensifier 3, a basic objective 6, one or more measuring devices 7,8, and a collimator arranged between the objective 6 and the measuring device(s) and which comprises laminations, the length-to-distance relation of those laminations, i.e. the ratio of their thickness to their length, determining, in conjunction with the focal distance of the objective 6 and the electron-optical enlargement of the image intensifier, the measuring field of the densitometer. As described, the collimator is of cube or cylindrical shape in which the laminations are blackened and made of a thin metal. In an alternative arrangement, Fig. 3 (not shown), two adjacent collimators are provided, the collimators having different thickness laminations and each provided with a respective photo-cell 7 to provide two measuring fields. As shown in Fig. 4, three collimators 13, 14, 15 and three photo-cells 7 are provided, two being connected to the measuring device 8 and the other being connected to a control amplifier 17, one output of which controls the X-ray source via an X-ray generator 20, and the other output of which is connected to control the sensitivity of an amplifying system of the measuring device 16. In another arrangement, Fig. 5 (not shown), two identical, relatively rotatable collimators are provided one after the other on the optical axis to provide different measuring fields depending on their relative positions. In yet another arrangement, Fig. 6 (not shown), three different collimators are provided, a movable screen having an aperture being provided between the collimators and a photo-cell 7 to enable selection of one of the collimators.  As shown in Fig. 7, a light source 35 is provided to enable checking of the measuring field produced by the collimator 34 and to enable calibration of the densitometer. The photo-cell(s) may be secondary-emissive electron multiplier tube(s).
Patent GB-600668-A (GB)
Title: Improvements in bore gauge
IPC: G01B3/34
Filed: 1945-03-19
Abstract: 600,668. Plug gauges. STANDARD GAGE CO., Inc. March 19, 1945, No. 6858. Convention date, Nov. 3, 1944. [Class 106 (ii)] The body portion of a plug gauge comprises the equatorial zone of a sphere, with diametrically opposed gauging elements characterised by a relieved non-gauging surface adjacent a portion of the spherical surface and extending from said portion to the edge of the gauging head, said non- gauging surface permitting ready entry of the body portion into a bore to be gauged. In Fig. 1, the go portion of a plug gauge is relieved at 15, 16 on opposite sides of the body portion up to the equator so that with the gauge swung counter-clockwise from the position shown, it can be inserted into the bore easily. By swinging the gauge clockwise until the gauging surfaces 11 become operative, it can be seen whether the bore is under or over minimum size. The sides of the plug are further relieved at 13, as shown in Fig. 6, so that the bore can be tested for roundness. The " not-go end 17 of the gauge is made in a similar manner, but with a narrow equatorial zone for distinguishing purposes. Specification 291,286, [Class 106 (ii)], is referred to. The Specification as open to inspection under. Sect. 91 comprises also a modification, Fig. 7 (Cancelled), in which the relieving surface is cylindrical and straddles the equator of the body portion, the diameter d<1> of the cylinder being less than the gauging diameter d. This subject-matter does not appear in the Specification as accepted.
Patent GB-743207-A (GB)
Title: Improvements relating to warning horns
Inventor: VICKERSON GEORGE ERNEST
IPC: G10K9/04
Filed: 1953-03-12
Abstract: 743.207. Horns. TRICO-FOLBERTH, Ltd. May 28, 1954 [March 12, 1953]. No. 6878/53. Class-13 A horn consists of a diaphragm 4 clamped at its periphery in a sound, box and: having an aperture 10 closed by a vibratory assembly 9 which is held against the diaphragm by the spring 14 whose tension is adjustable by means of the screw 15. Air is blown into the sound chamber through the hose 18. A centering spider 11 is separated from the assembly 9 by a spacer 12. The casing consists or two parts. 5 and 1 which when screwed together clamp the diaphragm. A trumpet 7 is screwed into the part 5. The diaphragm 4 and the member 9 may be laminated. In a modification, Fig. 3 (not shown), the spring exerts a compressional force and is located on the opposite side of the member 9, its degree of compression being adjusted by the screwing in of the trumpet.
Patent GB-1096313-A (GB)
Title: Ammonia converters
Inventor: DAVIES PETER
IPC: C01C1/04
Filed: 1964-02-19
Abstract: <PICT:1096313/C1/1> In reacting a mixture of nitrogen and hydrogen in the presence of a catalyst to form ammonia, by utilizing an ammonia converter which comprises a pressure vessel containing a catalyst bed and a heat exchanger, and has a gas flow system equipped with a by-pass line so that gases may be introduced directly into the catalyst bed without passing through the heat exchanger, the by-pass line is fitted with a heater external to the pressure vessel so that on start up, gas heated in the external heater may be passed directly to the catalyst bed to bring it to reaction temperature, and subsequently the heater may be switched off or disconnected from the by-pass circuit when cool gas mixture may be passed through the same by-pass inlet directly to the catalyst bed so as to control its temperature.  Preferably the external heater is heated by means of combustion products from a burner or by electrical means.  In the Figure, pressure vessel 12 has lid 13 sealed with high-pressure seal 14.  Catalyst basket 15 supported in vessel 12 by tube plate 16 resting on projection 17 has a domed cover 18 secured to the basket forming a chamber 20 and cooling tubes 21 extend through the catalyst bed and open at their upper end into the chamber 20.  Bore 22 in the centre of cover 13 has sealed into it a pipe 23 carrying via branch 25 the main supply of nitrogen and hydrogen; a by-pass inlet 26 which extends through 23, 22 and the dome 18 into the chamber 20 connected at its upper end to branch 32; and a pyrometer sheath 33 containing several thermocouples. On start up, gas compressed by piston 41 is passed through valve 44, heated by heater 45 and passed directly to above the catalyst bed, to emerge from the bed via one side of heat exchanger 34 by-pass condensing system 35 by means of valve 52 and be recycled to valve 44 and heater 45; the cycle being continued until the operating temperature of 300-500 DEG  C. is reached.  The heater 45 is shut off and the main gas stream is passed via valve 49, branch 25 and pipe 23 to above the basket 15 when it circulates round the basket and enters heat exchanger 34 from the bottom.  The gas is preheated in passing through 34 and through tubes 21.  It then passes through the catalyst bed where it reacts, the reaction products leaving via the other side of exchanger 34 to condenser 35 where ammonia is condensed and removed via 38, the unreacted gases being recycled via line 40. The temperature of the catalyst bed is controlled by passing part of the main gas stream through valve 44 and pipe 26 directly to chamber 20 above the catalyst, and it may also be controlled by passing part of the main gas stream via valve 48 and line 46 directly to the ends of cooling tubes 21.
Patent GB-549713-A (GB)
Title: Improvements in or relating to machines for covering electric cables with rubber by extrusion
IPC: B29C48/06
Filed: 1941-05-31
Abstract: 549,713. Coating electric conductors with rubber by extrusion. STANDARD TELEPHONES & CABLES, Ltd., BROUGHTON, J. DELVES-, and BROUGHTON, P. N. DELVES-. May 31, 1941, No. 6974. [Class 87 (ii)] Over the point nose 2 fits a spider 3 held in place by a locating ring 5 which supports also the die 4, a nut 7 holding the ring in place.
Patent GB-579300-A (GB)
Title: Improvements relating to portable radio sets for mounting on vehicles, aircraft, or the like
IPC: H05K11/02
Filed: 1944-04-17
Abstract: 579,300. Wireless receiving apparatus. LAUGHTON, G. A., and COX, H. N. April 17, 1944, No. 7031. [Class 40 (v)] [Also in Group XIV] A mounting means for a number of radio units such as those described in Specification 558,266, [Group XVII], comprises an L-shaped bracket, the units being secured between one wall of the bracket and a low parallel wall by means of anchorage plates. Projecting pins on one end of the radio unit 31, Fig. 1, engage holes 20 punched in indented bosses -in the back flange 12 of the bracket, while pins C on the other end of the unit 31 engage in holes 28 in an anchor plate 25, Fig. 6. The edges 13, 15, 16 of the bracket are flanged, and plates 19 are spot-welded to the corners, the edges 18 of holes 17 formed in the bracket being similary flanged.The anchor plate 25, Fig. 6, is diecast and formed with a base portion 26 provided with slots 29 which engage with bolts 22, Fig. 1, mounted in the low wall 10 formed on the front of the bracket. The bolts are held from rotation by hexagonal cups welded to the inside of the wall 10, and the anchor-plate is held in position by wing-nuts 30. Resilient mountings 35 as described in Specification 558,266 are fixed in holes in the bracket and utilised to provide a resilient support for it from the bars 32 which are formed with mounting slots 33. In an alternative construction, Fig. 8 (not shown), the anchor-plate 25 may be formed as a metal pressing.
Patent GB-1495883-A (GB)
Title: Materials separating apparatus
IPC: B29C55/30
Filed: 1976-02-23
Abstract: 1495883 Magnetic separation RAYTHEON CO 23 Feb 1976 [17 March 1975] 07057/76 Heading B2J Apparatus for separating conductive metals from mixed non-ferromagnetic materials, e.g. derived from municiple waste, comprises a first sorting stage 20 in which the materials are fed past a first magnetic means which act inductively on conductive metals to displace them transversely, thereby separating the materials into a first, undeflected portion 94 of non - conductive materials, a second deflected portion 92, 92a of conductive metals, and a third, intermediately deflected portion 96, 96a of intermediate conductivity materials, and a second sorting stage 22 in which the separated third portion 96, 96a is fed past a second magnetic means similar to the first, thereby to separate from the third portion any deflected conductive metals which may have been retained in the third portion. As shown, the mixed non-ferromagnetic materials are fed from a distributor 64 to two inclined divergent stacks 60, 62 each comprising five spaced, superimposed ramps 61, 63. Each ramp comprises a herring bone pattern of alternating oppositely polarized magnets, Fig. 4 (not shown) the ramps being at such an inclination that the materials slide down them under the force of gravity and separate into the five streams shown that are discharged into respective compartments 102, 104 and 106 of collectors 98, 100. The third portion 96, 96a of the separated materials collected in compartments 106, 106a are then fed by chutes 126, 128, 136 and 138 onto respective ramps 114, 114a, 112 and 112a of the second sorting stacks 108, 110 which separate the conductive metals into outer compartments 120, 124 of collector 118, 116. The collected conductive metals from compartments 120, 124 are removed by conveyors 144, 148 together with the conductive metals from the compartments 104, 104a which are fed to the conveyors by chutes 132, 134 and 140. The undeflected material from compartment 102 in the first sorting stage is fed by chutes 130, 142 onto the centre conveyor 146, together with that from compartment 122 in the second stage. Before entering the first sorting stage ferromagnetic material is removed from the material supplied from vibratory feeder 28 by a magnetic drum separator 28. Provision may be made for manually or automatically djusting the inclination of the ramps of each sorting stage, Figs. 3 and 11 (not shown).
Patent GB-140592-A (GB)
Title: Improvements in hand-tools for facilitating the burling of fabrics
IPC: D06C29/00
Filed: 1919-03-21
Abstract: 140,592. Blakey, J. W. March 21, 1919. Burling. - A hand-tool, designed to facilitate burling and to ensure that the ends of thread left standing on the fabric are of a uniform length, comprises a self-opening device having a part B adapted to be placed under the tweezers holding a knot and a cutter c at a suitable height above the surface of the fabric and adapted to co-operate with a part D. Stamped-out lugs K are provided to facilitate pressing the flat edges A on the fabric under treatment. According to the Provisional Specification, an adjusting-device may be provided for regulating the height of the cutter.
Patent GB-199090-A (GB)
Title: Improvements in or relating to ejector apparatus for the removal of liquid and other refuse in ships
IPC: F04F5/24
Filed: 1922-03-10
Abstract: 199,090. Thompson, H. A. March 10. 1922. Hulls, cleaning.-An ejector suction apparatus for removing liquid refuse from tanks or ships consists of a rigid tubular member within which a suction is set up by means of a central conical or annular steam or air nozzle; it is adapted to form a handle, or is fitted with a handgrip, and the lower end tube has preferably a squeegee or scraper such as those described in Specification 199,338. The tubular member a, Fig. 1, with suction mouthpiece b below and handle c above associated with the inducing-fluid supply connection d and the thumb operated control valve parts f, e, has a lateral socket h carrying the central upwardly directed inducing-nuid nozzle i. In a modification, Fig. 6, the mouth piece b is fitted with a steel scraper o whereby material adhering to the walls, the tank &c. to be emptied may be removed.
Patent GB-680368-A (GB)
Title: Improvements connected with clasps for bracelets
Inventor: FISHER REGINALD WILLIAM
IPC: A44C5/22
Filed: 1950-03-22
Abstract: 680,368. Bracelets. BUSHELL & SON, Ltd., H. March 21, 1951 [March 22, 1950], No. 7120/50. Class 43. A clasp for a bracelet of the type wherein two hollow, semi - circular members 6, 7 are hinged together at 8 and automatically interconnected by a clasp when pressed together comprises a resilient strip of metal 10 which is slidable in a slot 9 in the end face of one member 6, one end of the strip being shaped e.g. rolled over at 11 to prevent escape from the slot and the other end being engaged with the other member 7 and being provided with shoulders 12 which engage behind the edges of the slot 9 when the members 6, 7 are pressed together. The strip 10 slides in the wide part of an inverted T shaped slot 9. The shoulders 12 are produced by reducing the width of the strip at one end, the tongue so formed being bent into a finger piece. 13 and a lug 14 which engages a slot 15 formed in the top surface of the member. When the bracelet is closed the shoulders 12 spring behind the edges of the stem of the T shaped slot 9, but can be re-aligned with the cross-member of the T by depressing the finger piece 13. The clasp 10 may comprise two interconnected strips, Fig. 5, one strip 10a having the rolled over end 11 and the other 10b having the shaped end 12, 13, 14, the straight end of the strip 10a being received in a slot in the end face of the member 7 of the bracelet.