baber/WOPTO huggingface dataset:
Patent GB-131239-A (GB)
IPC: H01H19/02
Abstract: 131,239. Callegaris, M. E. Feb. 17, 1919. Snap-action switches; contacts. - The fixed and movable contacts and the snap-action mechanism of turn-button switches are mounted in the underneath of a hollow casing and held in place by a spindle-equivalent formed from a plate doubled on itself and having its ends bent at right-angles to form arms which, with the intervention of a spring, hold the movable contacts up to the fixed contacts and the fixed contacts up to the ledges in the recessed base. The base has three annular recesses as shown, and a central passage to admit the spindle-equivalent 2, on which are threaded and held by the arms 4, an insulating-disk 4<1>, a spring 15, the movable contact-member b, an insulating-disk 12, round which is bent one end a of the fixed contact plate, the middle portion of which is held in a recess 19 in the base, and the other end 9 doubled on itself to form a clip to hold the leads. There is also threaded on the spindle an insulating-disk 8 and a flat plate 5 bent to a U-shape, its sides engaging with the two fixed blade springs 6. The spindle is attached to a turn-button 3, and when the spindle is rotated it carries with it the member 5 which conveys a snap-action movement to the contact-member b, with which it is in engagement. The contact 5 passes freely through the plate 12 carrying the fixed contacts.
Patent GB-886048-A (GB)
Title: Nitroaryl silanes and nitroaryl-polysiloxanes and processes for the production thereof
IPC: C07F7/18
Filed: 1958-04-25
Abstract: The invention comprises nitroarylsilanes of the formula <FORM:0886048/IV (a)/1> where Ar is an arylene radical, Y is a C1-4 alkyl radical, X is halogen or an alkoxy or aryloxy radical, d is 1 to 3, and a is 0 to 8, and also comprises their corresponding polysiloxanes. The halosilanes are prepared by nitrating an arylhalosilane in an anhydrous organic solvent, e.g. chloroform, acetic acid and carbon tetrachloride.  Suitable nitrating agents are nitric acid, and mixtures of nitric acid with sulphuric acid or of potassium nitrate and sulphuric acid.  The alkoxy or aryloxy derivatives are obtained by esterification of the halosilanes with an alcohol or phenol, if desired in the presence of an acid acceptor. The polysiloxanes are prepared by hydrolysis of the silanes, with or without other silanes, or by nitration of arylpolysiloxanes.  The silanes and siloxanes may be reduced to amino derivatives, which may be diazotized as described in Specification 870,467.  The examples describe the preparation of: (1) and (2) beta-(nitrophenyl)-ethyl trichlorosilane (mixture of isomers); (3) a mixture of isomers of beta-(nitrophenyl) ethyl methyl dichlorosilane; (4) nitrophenyltrichlorosilane (o, m or p-isomers); (5) nitrophenyl-methyldichlorosilanes; (6) beta-(nitrophenyl)-ethylpolysiloxane; (7) nitro octa phenyl cyclotetrasiloxane; (8) beta-(nitrophenyl)-ethyl-triethoxysilane; (9) nitrophenyl triethoxysilane.  Other alkoxy and phenoxy derivatives are mentioned.
Patent GB-131383-A (GB)
IPC: F41A23/34
Abstract: 131,383. Compagnie des Forges et Acieries de la Marine et d'Homecourt. June 5, 1917, [Convention date]. Field carriages, endless-track type. Hand-gear is provided for operating one or both of the endless tracks, so that the gun may be manoeuvred in the firing position. In the construction shown, a hand-wheel or crank applied to a shaft 16 drives the sprocket wheel 23 of the endless track 25 through a train of toothed gearing. Worm-gearing may, however, be used.
Patent GB-396013-A (GB)
Title: Improvements in rotary pumps of the fixed abutment type
IPC: F01C21/08
Filed: 1933-05-08
Abstract: 396,013. Rotary pumps. HALL, S. Z., 76, Victoria Street, London. May 8, 1933, No. 13346. [Class 110 (ii).] The pump has blades c which operate in pairs, each pair having four lugs e, extending axially, which may be fitted with shoes m, and rub on rotating rings k located in the casing walls. The edges n of the abutment l are sharp. A knife blade u may cooperate with the blades c which are arranged with cutting edges. The casing a opposite to the abutment l is first machined from a centre p for about 90‹ in a pump with two blades, and 60‹ for pumps with three blades. The surface is then re-machined so that blades c will be a close fit in all pumping positions. Specifications 302,555, [Class 110 (ii), Rotary engines &c.], and 341,337 are referred to.
Patent GB-1083840-A (GB)
Title: Photographic shutter
IPC: G03B7/08
Filed: 1966-03-25
Abstract: 1,083,840. Camera shutter control. AGFAGEVAERT A.G. March 25, 1966 [March 25, 1965], No. 13353/66. Heading G2A. A camera has means for automatically controlling the exposure time which includes a photoresistor exposed to the prevailing illumination: if a sharp pulse of more intense illumination is received, as by ignition of a flash tube, the shutter is then closed immediately to terminate the exposure. As shown, when shutter release 15 is depressed, a detent 5 thereof engages a pin 4 on shutter opening ring 1, and rotates it clockwise against spring 3, until the pin moves clear of detent 5, whereupon ring 1 is pulled back to its original position. Mounted on ring 1 is the closing ring 2, which is carried round by ring 1 on its initial clockwise movement. When ring 1 is pulled back, however, ring 2 remains locked by a lever 12, which has been pushed (against spring 13) into latching engagement with a recess 14 on ring 2 by a lug 6 on release 15. This relative movement of ring 2 with respect to ring 1 opens the shutter blades. Lever 12 is held in this locking position, against spring 13, by an electromagnet 23, and when it is released, ring 2 is pulled anticlockwise by spring 10 to close the shutter again. The time control circuit 21 is set out in more detail in Fig. 2 (not shown). The load capacitor (31) is in series with the photo-resistor (32) by way of the primary (34) of a transformer (33). The secondary (35) is connected between the capacitor (31) and a switching device comprising two transistors (36, 40). When release 15 is pressed and the shutter opens, switch 20 is closed and switch 27 is open. The electromagnet 23 is energized by the transistor switching device, and consequently latches the shutter open by means of lever 12. For exposures with normal light, the capacitor (31) is charged by way of photo-resistor 32 until the trigger potential is reached. Electromagnet 23 is now de-energized, and lever 12 (and hence ring 2) is released to close the shutter. If a flash reaches the photo-resistor (32) before the capacitor has reached the triggering potential, the steepsided current impulse resulting is passed on by transformer (33) direct to the transistor switching device, and causes electromagnet 23 to become de-energized. Thus the shutter closes immediately after the flash.
Patent GB-819555-A (GB)
Title: Multiswitch of the telecommunication co-ordinate type
IPC: H01H67/26
Filed: 1957-04-26
Abstract: 819,555. Cross-bar switches. STANDARD TELEPHONES & CABLES Ltd. April 26, 1957 [April 28, 1956], No. 13370/57. Class 40 (4). A multi-switch of the cross-bar type comprises an array of parallel insulating plates on which are arranged predetermined multiples crossing each other, the multiples being associated respectively with input and output leads. The insulating cards 11 and end plates 14, 15 are secured in spaced relationship by engaging slots in bars 18, the turned-over ends of which engage slots in locking bars 20, Fig. 3. The assembly is secured by screws 4 passing through distance pieces 5 into a frame 1, Fig. 1, carrying the actuating mechanism, a slot 7, Fig. 2, allowing slight adjustment relative to the frame 1. Plugs 3, 3<SP>1</SP> provide connection with the input and output leads. The vertical multiples comprise printed lines 13 provided at the crossing points with coatings 24 of precious metal. The horizontal multiples comprise spring tapes 12 secured to the insulating plates by tubular rivets 23, bends in the tapes carrying them over the vertical conductors and permitting expansion due to temperature changes. The contacts are normally held open by projections on bars 19 and are closed when the appropriate bar is moved downwardly as seen in Fig. 8b against spring action. The actuating mechanism for each individual level, Fig. 9, is secured by screws to holes 10 in the frame, Fig. 2. Rotation in one or other direction of a vertical rod 34 deflects the horizontal part of a spring 27 or 27<SP>1</SP> downwards to lie in a slot of a bar 30. The bar 30 of the selected level is then driven by a magnet in the direction of the arrow to carry along the horizontal part of the operated spring 27 and its associated cranked end 32 of the selected bar 19, whereby the selected crosspoint is closed. The rod 34 may then resume normal position, the connection being held until bar 30 is restored.
Patent GB-750867-A (GB)
Title: Electrical device for storing information
IPC: G11C11/22
Filed: 1954-05-07
Abstract: 750,867. Non-contact-making relays. STANDARD TELEPHONES & CABLES, Ltd. May 7, 1954 [May 13, 1953], No. 13373/54. Class 40 (4). [Also in Groups XIX and XXXVI] An information storage device comprises a condenser with a ferro-electric dielectric 3 bounded by an electrode 1 and a semi-conductor electrode 2 the resistance of which varies with the electric field applied to its surface. Pulses applied to electrode 1 thus effect quasi-permanent changes in the resistance along electrode 2 and so control the potential of point 6 which controls the conduction state of diode rectifiers 12 and 13. Input pulses applied at terminal 14 are thus gated according to the control exercised by the last pulse applied to terminal 7, before reaching the output terminal 15. The dielectric may consist of barium titanate, or a ceramic with barium and strontium titanates, and the electrode 2 of P-type tellurium with some impurity such as antimony.
Patent GB-912603-A (GB)
Title: An improved rotary internal combustion engine
IPC: F02B53/02
Filed: 1960-04-14
Abstract: 912,603. Rotary I.C. engines. NSU. MOTORENWERKE A.G., and WANKEL G.m.b.H. April 14, 1960 [April 17, 1959], No. 13411/60. Class 110 (2). A rotary I.C. engine of the n and n+1 lobe type, Fig. 4, comprises three lobes and four apex portions and is provided with a fuel/air inlet port 26, fuel injection means 50, 32, an air inlet port 44 and an exhaust port 28. Two such units, Fig. 9, may be mounted in phasebalanced relationship on a common output shaft 52 having 'counterweights 80, 82. A cooling circuit 122, 222, 124, 224, 125, 100 is provided as shown together with a lubricating circuit 90, 94 for the bearings.
Patent GB-437889-A (GB)
Title: Improvements in metal vapour electric discharge vessels
IPC: H01J13/20
Filed: 1934-05-03
Abstract: 437,889. Metallic-vapour apparatus. ELECTRICAL EQUIPMENT & CARBON CO., Ltd., 107, New Oxford Street, London.- (Elin Akt.-Ges. F³r Elektrische Industrie; 1, Volksgartenstrasse, Vienna) May 3, 1934, No. 13434. [Class 39 (i)] The inner wall of each anode arm A of a metal-vapour discharge device is provided over the greater part of its area with a conducting coating, and each coating is connected to a leading-in wire and is insulated from the coatings in the other arms by uncoated parts of the device. Coatings may also be provided on tubular members r which are joined to the arms by members t and subdivide the arc. The coating may consist of mercury which is adapted to condense on etched or roughened surfaces. Alternatively, a metal layer, obtained by means of a carbonyl compound, may combine with condensed mercury to form the coating, or a metal or carbon coating may be formed by cathodic sputtering, or the coating may be translucent or transparent and consist of platinum or iron. The leading-in wire e may be connected to the coating through the wire z and a spring ring f, or alternatively, through a pool of mercury. The coatings may be used as controlling grids and to avoid the formation of wall charges.
Patent GB-639056-A (GB)
Title: Load handling apparatus
IPC: A01C3/04
Filed: 1947-05-20
Abstract: 639,056. Load-handling machines ; load engaging and depositing. SEDORE, E. C. May 20, 1947, No. 13485. [Classes 78 (iii) and 78 (iv)] A manure loader or like loadhandling machine comprises a fork 25 on a frame 22, 23 pivoted at 24 to a frame 18 pivoted in turn at 20 to a frame 11 supported vertically from an extension 9 of the draft links C of a tractor provided with means for raising and lowering the draft links. The frame 22, 23 is normally held against the frame 18 by latches 28 and the frame 18 is prevented from swinging forwardly relatively to the frame 11 so that the fork 25 may be driven into a pile of material by reversing the tractor. When the fork is withdrawn by forward movement of the tractor, the resistance to motion afforded by the material causes the frame 22 to tilt about the axis 20 to a position in which the fork 25 is suitably disposed to carry material which is retained on the fork by arms 27 : the frame 22 is retained in this position by catches 35 which operate automatically. The frame 11 comprises side bars 14 rigidly connected by crossbars 15 and struts 16, and mounted on a pintle 12 extending between the ends of tubes 9 forming extensions of the draft links C. The frame 11 is held vertical by stays 151 connected to a yoke 16<SP>1</SP> secured to the tractor and carries the frame 18 comprising side bars 19 joined by bars 20, 21, the former constituting the hinge between frames 11 and 18. Forward swinging movement of the frame 18 is prevented by engagement of the lower ends of the bars 19 with extensions 13 of the pintle 12. The fork 25 comprises tines secured to a crossbar rigid with side bars 22 but fitting loosely in holes in the side bars 19 to form a hinge. A crossbar 23 joining the side bars 22 is normally held behind a shoulder 31 on latches 28 which are pivoted at 29 to the frame 18 and normally held in locking position by springs 33 but may be released by pulling on a lanyard 34 to permit the fork 25 to swing about its hinge 24 and dump its load: the catches 28 are re-engaged when the fork is raised by pulling a rope 39. The catcvhes 35 comprise levers pivoted at 36 to the side bars 22 and adapted to abut on the pintle 13 when the frame 18 is tilted The catches are automatically disengaged by the relative movement of the fork and the frame 11 when the load is dumped as described above, and a strap 38 limits their downward movement. A spring 40 tends to hold the fork in its horizontal position. The fork 25 may be replaced by a scoop.
Patent GB-134912-A (GB)
IPC: E05D5/02
Abstract: 134,912. Bellow, E. A. Nov. 12, 1918. Wire hinges.-Relates to hinges of the type comprising a T- member made of wire and pivoted on a plate member. The T-member is made from a length of wire bent at the middle to form an attachment eye a and diverging arms b, which, at the axis of the hinge, are bent into alinement to form pivot portions c. The wire may be extended beyond the pivot portions to form attachment eyes d. The other member e of the hinge is of the butt type formed from sheet metal with bent-up sockets f.
Patent GB-675299-A (GB)
Title: Improvements in and relating to the production of artificial fibres of polymeric compounds
IPC: C07K1/02
Filed: 1949-05-20
Abstract: A solution of a synthetic polypeptide, obtained by the process of Specification 675,298, in a solvent consisting of or comprising a lower aliphatic carboxylic acid (1-5 carbon atoms), a halogen-substituted lower aliphatic carboxylic acid, or a monohydric phenol, is extruded into a setting medium to form artificial fibres. The polypeptides used are derived from anhydrocarboxy amino acids. The solvent may be phenol, meta-cresol, formic acid, or di- or tri-chloracetic acid.  A mixture of 3 parts by weight of trichloracetic acid and 1 part of dichloracetic acid may be used. Diluents such as water, benzene, and chloroform may be present.  The solutions may be dry or wet spun.  For wet-spinning the preferred coagulants are water, methyl or ethyl alcohol or aqueous solutions of these alcohols, or diethyl ether or petroleum ether.  In an example, anhydrocarboxy - d,l - b  - phenylalanine and the gamma-methyl ester of anhydrocarboxy-l-glutamic acid are dissolved in nitrobenzene containing N - (aminoacetyl)-dimethylamine as polymerization initiator.  After standing for 15 days at 50 DEG  C., the resultant gel is washed with petroleum ether to remove the nitrobenzene and is then dried.  The synthetic polypeptide obtained is dissolved in m-cresol to form a 15 per cent solution.  The solution is extruded into ethyl alcohol to form fibres.  In another example anhydrocarboxy-d,l-b -phenylalanine is polymerized while dissolved in nitrobenzene containing N-(a -amino-b  - phenyl - propionyl) - dimethylamine.  A solution of the synthetic polypeptide in m-cresol is extruded at 70 DEG  C. into ethyl alcohol to form fibres.  In another example, anhydrocarboxy - d,l - b - phenylalanine and anhydrocarboxy-a -aminoisobutyric acid are copolymerized and the synthetic polypeptide obtained is dissolved in a mixture of trichloracetic acid and water.  The solution is extruded into water, ethyl alcohol, or aqueous alcohol.  In other examples, solutions of the copolymer of d,l-b -phenyl-alanine and glycine, of the copolymer of d,l-valine and a -amino-isobutyric acid, and of a polymer of d,l-valine, in m-cresol, formic acid, and dichloracetic acid are extruded into ethyl alcohol and ether mixture, and water.  The second Provisional Specification refers also to the use of cupriethylene diamine as a solvent for the synthetic polypeptide.
Patent GB-271488-A (GB)
Title: Improvements in parachutes
IPC: B64D17/00
Filed: 1927-05-19
Abstract: 271,488. Albihn, H. F. May 20, 1926, [Convention date]. Parachutes sre provided with circular or, as shown, elliptical holes arranged in two or more rows 1, 2, preferably along circles concentric with the edge, the holes in one row being displaced in the peripheral direction relatively to the holes of adjacent rows. The total area of the holes is from 0.2 per cent to 2 per cent of the area of the parachute, and the perforated area is preferably bounded by two circles arranged at distances from the apex and the edge equal respectively to 5 per cent and 10 per cent of a meridian line joining the apex to the edge.
Patent GB-612839-A (GB)
Title: Improvements in, or relating to, steam-operated heaters for water and other liquids
IPC: F28C3/08
Filed: 1946-05-04
Abstract: 612,839. Thermally-actuated valves; venturi casings. SPIRAX MANUFACTURING CO., Ltd., and SMITH, H. A. May 4, 1946, No. 13555. [Class 135] [Also in Group XIII] A steam heater for liquids circulated therethrough from a storage tank &c. comprises a hollow elongated body 1 having bosses 2, 4 for connection to the tank, a steam supply nozzle 8 at one end and at the other end a ball valve 12 mounted on a casing 14 slidable relevant to the nozzle 8 and containing a thermostat, the steam passing through the nozzle causing, by injector action, circulation of the liquid through the hollow body while the thermostat, according to the temperature of the circulated liquid, moves the ball valve to and from the nozzle 8 to control the supply of steam. The casing 14 is guided in an opening 15 in the upper part of the body 1 and by radial fins 7 and may be preadjusted manually by a cap 21 compressing a spring 20.
Patent GB-220710-A (GB)
Title: Improvements in or relating to alloys
IPC: C22C19/05
Filed: 1923-05-22
Abstract: 220,710. Etchells, H., Popplewell, A., and Cameron & Son, Ltd., L. May 22, 1923. Alloys.-Iron alloys contain 26-50 per cent of nickel, 5-30 per cent of chromium, and not more than 0.25 per cent of carbon, with or without not more than a total of 2 per cent of one or more of the following elements : manganese, silicon, aluminium, magnesium, sulphur, phosphorus, molybdenum, tungsten, vanadium, uranium, copper, and titanium. Cobalt may be substituted for part or all of the nickel. The alloys may be made by the reduction of oxides of one or more of the metals by means of a reducing-agent such as silicon, magnesium, or aluminium. The alloys are resistant to the action of acids and may be used for making bright metal decorations, table ware, cooking and other utensils for food, and valves. According to the Provisional Specifications, the nickel may be 20-50 per cent, and the carbon up to 0.3 per cent.
Patent GB-580659-A (GB)
Title: An improved roll holder
IPC: A47K10/40
Filed: 1944-07-17
Abstract: 580,659. Holders for rolls of paper or fabric. DANIELS, A. July 17, 1944, No. 13579. [Class 42 (ii] [Also in Group XVII] An automatic locking means for holders for rolls of paper or woven fabric, e.g. toilet rolls comprises a base B and two perpendicular arms p and a multi-part spindle of which the parts a, b are spigoted together by a pin c having a head c' slidably located in a hole d containing a spring e, the parts a, b being also connected by a pin h and socket i. When pin h and socket i are engaged the roll may be placed on the spindle. The two parts may then be drawn apart and rotated so that when the spindle is pressed down between the arms p to engage with their ends in recesses at the base the spindle cannot be telescoped to permit removal of the roll owing to the pin h functioning as a stop.
Patent GB-493157-A (GB)
Title: Improvements in or relating to hydraulic shock-absorbers, more particularly for automobile vehicles
IPC: B60G15/06
Filed: 1937-05-13
Abstract: 493,157. Hydraulic shock absorbers. FICHTEL & SACHS AKT.-GES. May 13, 1937, No. 13585. Convention date, May 16, 1936. [Class 108 (iii)] In a vehicle hydraulic shock-absorber of the piston-and-cylinder ype, the piston 18, Fig. 1, is provided with a passage controlled by a non- return valve 17 and always forces the liquid in one direction only from the cylinder 10 through a chamber 12, excess liquid passes from the chamber 12 to a compensating chamber 14 through an adjustable non-return valve 15, the ch mbers 12, 14 which are concentric with the cylinder 10 open at one end of the cylinder into a common valve-chamber, and the liquid returns to the cylinder through a further non-return valve 16. On compression of the shock-absorber, the valve 16 closes an opening in the lower end of the cylinder and liquid is forced past the spring-pressed valve 17 and through apertures 20 in the piston 18 and then, due to the entry into the cylinder of the piston-rod 19, from the upper end of the cylinder, through the chamber 12, past the valve 15 into the valve-chamber 13 and compensating chamber 14. On extension the valve 17 closes and the liquid above the piston follows the same path, liquid also being sucked in beneath the piston past the valve 16. Fig. 2 shows a construction applicable to an independent wheel suspension incorporating a supporting spring 25, the chamber 12 being constituted by the bore of the hollow pistonrod 19 and the chamber 14 by the spring casing 24, while the valve 15 is arranged at the upper end of the piston-rod 19. In this construction on compression of the shockabsorber, liquid is forced from the lower end of the cylinder 10 past the valve 17, through the piston-rod, past the valve 15, and into the casing 24, while on extension of the device, the liquid flows only from the annular space between the piston-rod and cylinder.