baber/WOPTO huggingface dataset:
Patent GB-877350-A (GB)
Title: Improvements in and relating to corner reflectors
Inventor: LOWERY PETER ALBERT
IPC: H01Q15/20
Filed: 1959-02-06
Abstract: 877,350. Aerials. CHEMRING Ltd. April 13, 1960 [Feb. 6, 1959], No. 4240/59. Class 40(7) A collapsible octahedral corner reflector comprises a single square panel 4 of reflecting material on each surface of which are mounted four triangular panels 5, 6 of reflecting material, disposed at 90 degrees to one another and supported by a centre post 1 and by four arms pivotally mounted on the centre post. Support on the third sides of the triangular panels is provided by tensioning wires which pass through hems. An adjustable catch, Fig. 3 (not shown), at the lower end of post 1 secures a slidable collar to which the lower panels 6 are attached. To collapse the reflector the catch is released and moved towards the centre of the post. The four arms fold upwards substantially parallel to the post. The position of the pivotal mounting of the arms may be varied over a small range by means of a catch, Fig. 2 (not shown). The slidable collar may be attached to a spring fixed to the post 1 so that the reflector is self-erecting. Specification 666,335 is referred to.
Patent GB-747130-A (GB)
Title: Improvements in ophthalmic mountings
Inventor: SPLAINE EDWARD MICHAEL
IPC: G02C11/02
Filed: 1954-02-12
Abstract: 747,130. Spectacle frames. BRITISH AMERICAN OPTICAL CO., Ltd. Feb. 12, 1954, No. 4253/54. Class 97 (1). A spectacle frame has a pair of lens-supporting rim members each having a section shaped to follow the upper contour shape of a lens from adjacent its nasal side to adjacent its temporal side and joined by a central bridge and a pair of separate readily replaceable snap-on ornamental or decorative trims each having a channel in the under surface to receive the said section of the rim and latch means adjacent their opposed ends to interlock with portions of the frame to hold the trims in position. As shown, the frame comprises a metallic bridge 16 connecting metallic lens rims 15 split at the temporal sides and carrying lugs 17, 18 to which the temples 22 are hinged. A trim 28 of non- metallic or metallic material or partly of both is detachably secured to each rim by engagement of a recess 32 with the bridge 16 and of a recess 35 with the lugs 17, 18, the rim being held in a groove in the member by the resilience of the material or by a spring clip attached to the temporal end and engaging the lugs 17, 18. A second detachable member 29 has inturned edges 44, 45 forming an internal groove in which the temple 22 may be located by sliding the member 29 over the temple. By this means the colour of the spectacles may be changed at will.
Patent GB-588470-A (GB)
Title: Improvements in or relating to electric protective relays
IPC: H01H47/16
Filed: 1945-02-20
Abstract: 588,470. Electromagnetic switches. REYROLLE & CO., Ltd., A., GRAY, W., and HOWEY, E. Feb. 20, 1945, No. 4286. [Class 38 (v)] A relay responsive to the rates of two quantities such as current and voltage which act on opposite ends of a pivoted beam D and which has means such as a weight D' and spring D' biassing the beam to one position when the relay is de-energised, has means for counterbalancing the bias D<5>, D', when current flows throughout the operative range of the relay. The relay thus responds accurately to the given rates, even when the actual currents flowing are small and when therefore the effect of the bias is relatively great. In the arrangement of Fig. 4 in which a "voltage" magnet B<1> acts in opposition to a "current" magnet C<1>, the counterbalancing means consist of an extra coil E which acts on an additional armature D<2> and which is fed through resistance R from the secondary G<2> of a saturable transformer, the primary G' of which is in series with the coil C. The transformer is saturated throughout the operating range of the relay so that the force exerted by the coil E is substantially constant and is adjusted by varying the resistance R or bodily moving the magnet E' so as to counterbalance the bias D', D'. In a modification, Fig. 6 (not shown) the coil E is mounted on the magnet C' to assist the coil C. In another modification, Fig. 5 (not shown), the coil C has extra turns but the current to it is shunted by a saturable choke.
Patent GB-619134-A (GB)
Title: Process for obtaining chromium salts and chromic acid
IPC: C01G37/08
Filed: 1946-02-12
Abstract: Chromium sulphate is obtained by crushing chromium ore, or washed, filtered and dried chromium oxide, until it will pass a 60 mesh sieve, then treating it with sulphuric acid of specific gravity 1.73 to 1.83 at a temperature sufficient to initiate the reaction, e.g. approximately 120 DEG  C., and allowing the dissolution to proceed by the heat of the reaction.  The solution may be completed by adding the washing liquors from a previous reaction.  The mass is dissolved in water to a concentration of 45 DEG  B<\>ae, the major part of the iron and other insoluble sulphates are removed by filtration, and most of the excess sulphuric acid is precipitated by adding lime. The remaining solution is electrolysed at 3-5 volts to convert the chromic sulphate to chromic acid.  The remaining sulphates are removed from the solution by precipitation with ammonia.  The resulting ammonium chromate is treated with lime to produce calcium chromate which is treated with sulphuric acid to release chromic acid.
Patent GB-368032-A (GB)
Title: Improved electrical contact device for making a temporary connection with railway or like rails
IPC: H01R4/64
Filed: 1931-02-11
Abstract: 368,032. Couplings. MINETT, C. F. and RAILWAY SUPPLIES CO., Ltd., 8, The Sanctuary, Westminster. Feb. 11, 1931, No. 4313. [Class 38 (i).] A device for connecting a testing instrument to a track or conductor rail, comprises a resilient plate 2 that fits between the head and foot of the rail 1 and is connected through an insulating handle 5 to a terminal 7 for the instrument lead 8. The connection may be made by a conducting core 4 in the handle, or the lead 8 may pass through a hollow handle and be directly connected to the plate 2. A stiffening spring may be mounted near the plate 2 to limit its deformation.
Patent GB-159406-A (GB)
Title: Improvements in fastenings for casement windows, doors, and the like
IPC: E05C19/00
Filed: 1920-02-12
Abstract: 159,406. Weber, R. Feb. 12, 1920. Catches, automatic. - Relates to a fastening for casement windows, doors, ventilating flaps, and the like, in which a roller or ball is so arranged in an inclined guide as to allow closure of the casement but prevent opening of same until said roller is retracted by means of a pivoted lever, and consists in suspending the roller or ball over the edge of the casement or the like, the lever being trunnioned between brackets on the casement, so that its upper end retracts the roller when its lower end is pulled to open the casement. In the construction shown in Fig. 1, the roller a is held by trunnions b in oblique slots d in brackets c on the window frame, the lever e being trunnioned between brackets f on the casement. In a further construction, the roller a is replaced by a ball guided in a casing on the window frame, and a plate may be connected to the casement for cooperating with the ball.
Patent GB-694000-A (GB)
Title: Improvements in sound absorbing panel
IPC: E04B1/86
Filed: 1951-02-23
Abstract: 694,000. Building panels. LEMMERMAN, Inc., C. W. Feb. 23, 1951 [Oct. 6, 1950], No. 4486/51. Class 87(i) [Also in Groups XIII and XXVII] In a sound-absorbing panel, a layer of sound-dissipating packing is disposed between each pair of a number of perforated plates 18, 24, 28 while the main portion of a cover 32 is spaced from one plate 28 to define a resonating chamber 30. The edges of the panel are formed by channelsectioned members 12 and the frame thus formed is reinforced by similar, smaller members 14, Fig. 3, riveted or welded to the middle plate 24. A reinforcing rib 34 is secured in the chamber 30. One layer 22 of packing is of densely packed tinsel of copper, stainless steel or " Monel " metal (Registered Trade Mark) and the other layer 26 is of less densely packed mineral wool. The perforated plate 18 at the face of the panel is of stainless steel and the plates 24, 28 and cover plate 32 of galvanised steel, the panel components being secured by welding. To allow for thermal expansion, the frame members 12 are severed at 36, Fig 3 and a plate 38, welded to an upper flange 12a on one half of the member, supports the corresponding flange on the other half. Specification 684,510 [Group XIII], is referred to.
Patent GB-1503947-A (GB)
Title: Length measuring apparatus
IPC: G01B11/02
Filed: 1975-02-03
Abstract: 1503947 Photo-electric measurement using scanners SETIM SOC D'ETUDES TECHNIQUES DES INDUSTRIES METALLURGIQUES 3 Feb 1975 [1 Feb 1974 4 Nov 1974] 4507/75 Heading G1A [Also in Division G2] To measure a dimension of a body it is placed between a light source and detector, and the source emission or the detector field of view is scanned along a linear path by rotating an apertured cylinder which surrounds the source or detector so as to determine the position of one edge of the body; means, e.g. a stop, are also provided to determine the position of the opposite edge, so as to permit the dimension between the edges to be found. In Fig. 1, the source is a rod 6 surrounded by a rotatable cylinder 4 having a helical slit 5; a fixed cylinder 2 having a linear slit 3 is provided, so that as cylinder 4 rotates a diamond shaped spot of light scans along the slit 3. The detector has a cylinder 7, Fig. 2, with a linear slit 9 opposite slit 3, and has a photo-sensor 8 at one or both ends. The inner surface of cylinder 7 is reflecting or fluorescent. The arrangement may be reversed by putting the sensors on the end of rod 6 and using a linear light source as at (11) in Fig. 6 (not shown) In this case baffles (16) are provided between the fixed and rotating cylinders, or inside the rotating cylinder, to ensure that all the light transmitted to the sensors (26) by the rod has struck the rod normally. Instead of a helical slit, triangular or trapezoidal sections may be cut from the rotating cylinder, Figs. 4 and 5 (not shown). When this is done the diamond shaped spot of Figs. 1 and 6 becomes a line 30, Fig. 3, whose length increases or decreases with cylinder rotation. Alternatively a set of helical slits may be used, Fig. 8 (not shown), or a narrow opaque helix or set of rings on a transparent cylinder, Fig. 12 (not shown). The rod 6 may be replaced by optical fibres (34), Fig. 11 (not shown) whose ends receive the light and pass it to sensors (26). In this case the number of fibre ends (37) in shadow is counted to give the dimension. The rod may also be replaced by an inclined mirror which directs light to the sensors.
Patent GB-676680-A (GB)
Title: Device for producing pulsating braking pressures in hydraulic brakes
IPC: B60T8/32
Filed: 1951-02-23
Abstract: 676,680. Hydraulic brakes. SODERLUND, S. Feb. 23, 1951 [Feb. 24, 1950], No. 4510/51. Class 103 (i). In order to eliminate wheel locking by providing a pulsating pressure action at the wheel cylinders, a rotary valve plate 8, having ports 9 and 10 therein, is arranged to reciprocate so as to interrupt in alternating sequence the passages between the pipes 11 and 12 leading from the master cylinder 1 to the wheel cylinders and the pipes 13 and 14 providing a return flow to the reservoir 15.
Patent GB-975103-A (GB)
Title: Improvements in or relating to garment cutting
Inventor: WARDLE HERBERT
IPC: B26F1/00
Filed: 1960-02-09
Abstract: 975,103. Cutting garment parts. COHEN & WILKS Ltd. Feb. 9, 1961 [Feb. 9, 1960], No. 4569/60. Heading B4B. A method of forming a part of a garment, e.g. an under-collar for a top coat, comprising a cloth part and a backing part is characterized in that a locating portion or portions are cut in the backing material when it is cut to shape, the locating portion or portions being used, after the backing part is attached to the cloth part, to position a cutting tool for cutting the cloth part to its final shape in relation to the backing part. Preferably, the cloth and backing parts are attached to each other by thermosetting, or thermoplastic, adhesive. The backing press-knife 2, Fig. 1, has two circular cutters or punches 10 fixed thereto for cutting the locating portions and a cloth press-knife 12, Fig. 3, is provided with two spring-pressed plungers 20 adapted to enter the locating portions.
Patent GB-1455842-A (GB)
Title: Fibre-reactive watersoluble azo dyes
IPC: C09B62/008
Filed: 1973-01-30
Abstract: 1455842 Fibre-reactive water-soluble azo dyes IMPERIAL CHEMICAL INDUSTRIES Ltd 23 Jan 1974 [30 Jan 1973] 4579/73 Heading C4P Novel azo dyestuffs of the formula wherein A is the residue of a diazo component of the benzene or naphthalene series; E is the residue of a coupling component of the arylamine, naphthol, phenol, 5-pyrazolone, 5- amino-pyrazole, or acylacetarylamide series; X is = N-, Y is Cl or Br; Q<SP>1</SP> is -O-, -S- or -NR<SP>4</SP>- in which R<SP>4</SP> is H or C 1-6  alkyl; Q<SP>2</SP> is a direct link, -O-, -S-, -CO-, -SO 2 -, -SO 2  NH-, -NHSO 2 -, -CONH- -NHCO- -COO- -OCO-, -OSO 2 - or -NR<SP>5</SP> in which R<SP>5</SP> is H or C 1-6  alkyl; R<SP>1</SP> is arylene and R<SP>2</SP> is optionally substituted alkyl, cycloalkyl, aralkyl or aryl and R<SP>1</SP> and R<SP>2</SP> together contain 14-18 carbon atoms; R 3  is H or C 1-6  alkyl; and n is 1, 2 or 3; are prepared by reacting a compound of the formula with, in either order, equimolecular proportions of an azo compound of the formula and a compound of the formula or by reacting the last-mentioned compound directly with a dye of the formula which is prepared by conventional diazotization and coupling. The novel dyestuffs may be used for dyeing cellulosic textile materials and, particularly, for dyeing textile materials based on natural or synthetic nitrogenous fibres e.g. wool silk and nylon.
Patent GB-545236-A (GB)
Title: Improvements in friction controlled joints or couplings
IPC: F21V21/26
Filed: 1941-04-08
Abstract: 545,236. Friction joints. BREEDEN, F. J. April 8, 1941, No. 4651. [Class 65 (ii)] A friction joint for the swivel head of an electric lamp &c. comprises a spigot D in a socket C, and a spring ring G arranged between them and fixed relatively to C, while movable relatively to D. The ring may be mounted in a channel E in D, and be fixed by flanges H engaging a recess in C. A screw L passes through C and G to prevent lateral movement of G.
Patent GB-800415-A (GB)
Title: Improvements in high speed printing machines
Filed: 1956-02-15
Abstract: 800,415. Typewriters &c. HANDLEY, J. Feb. 8, 1957 [Feb. 15, 1956], No. 4681/56. Class 100(4) A 'keyboard controlled printing apparatus has keys which can be depressed in at least two different directions in each of which the keys engage and operate devices controlling the printing of either a character or characters. The bearing in the base of guide 2, Fig. 1, is such that rod 20 may be tilted out of the vertical in any of four directions mutually at right angles in addition to being moved up and down. Four spring-controlled plungers 6 hold each key in vertical position, lower end 21 of rod 20 depresses one of the five plungers 9, depending on which way the key is tilted, to close an electrical contact which effects printing. Plungers 9 may operate pivoted levers 14-18, Fig. 3, through end portions 24 which lie beneath plungers 9. The operation of a lever may, for example, release a cam on a camshaft to cause a character or characters to be printed. Specification 789,742 is referred to.
Patent GB-787743-A (GB)
Title: Method and apparatus for recording signal voltages, particularly of physiological origin
IPC: A61B5/024
Filed: 1953-02-20
Abstract: 787,743. Recording cardiac vibrations. SCHWARZER, F. Feb. 20, 1953 [Feb. 22, 1952; April 19, 1952], No. 4809/53. Class 40 (4). The envelope of the complex electrical output of a stethoscope is used to modulate a carrier of less than 150 c/s. and the modulated carrier is recorded by a mechanical writing recorder. The output from a stethoscope 1, after amplification by triodes 4, 5, is rectified and fed through a smoothing circuit 9 to an oscillator 11, the oscillations being amplitude modulated. After amplification by triode 13, the oscillations are recorded, by an instrument 14, the frequency limits of which are not wide enough to accommodate the high frequencies of the original heart beats.
Patent GB-370116-A (GB)
Title: Improved construction of support for wires, and the like
IPC: F16L3/02
Filed: 1931-02-16
Abstract: 370,116. Cleats. REID, L. H., 32, Victoria Street, London. Feb. 16, 1931, No. 4839. [Class 109.] A support for an indoor aerial or other wire comprises a member 1 of insulating material formed with two curled hooks 2 in the same plane and opening in the same direction. The member is secured to a wall or like by one or more screws or nails passing through a hole or holes in the member. A spacing member 7 may be provided at the rear of the member 1. In one form, Fig. 11, a back piece 8 is formed integrally with the member 1 and insulates the aerial or wire from the wall or like.
Patent GB-726225-A (GB)
Title: Facsimile framing system
Inventor: NYMAN ALEXANDER
IPC: H04N1/36
Filed: 1953-02-23
Abstract: 726,225. Electric synchronous movements. ALDEN PRODUCTS CO. Feb. 23, 1953, No. 5001/53. Class 40 (3). A circuit arrangement, for operating apparatus for the phase control of a moving member, such as the framing device for the moving electrode of a facsimile recorder, in response to phasing or framing pulses in an input signal, comprises a generator of auxiliary pulses in synchronism with the framing pulses and switching means operated in synchronism with the movement of the moving member which apply the auxiliary pulses to operate actuating means to render a phase control device inactive when the successive operations of the switching means coincide with the auxiliary pulses from the generator. The received signals including the framing pulses are applied via diode V2 which cuts off the negative portions and produces a peaked waveform II which is applied over capacitor C2 to the grid of a valve V4, normally conducting, and forming with the valve V3 a one-shot multivibrator. The negative overshoot renders V4 non-conducting and causes a rise in potential at anode a4 for a period determined by the discharge time of capacitor ct and resistor r3 so that the output at the anode a4 of valve V4 is a series of negative pulses, as indicated at IV. These pulses are applied by a capacitor c4 to a diode V5, and the relatively long time-constant of capacitor c6 and resistor r10 produces substantially constant negative pulses which hold V6 non- conducting. Relay L1 is not actuated, contacts s1 are open and contacts s2 are closed to operate the motor of the receiver. When the negative pulses from the anode a4 of the valve V4, modified by a capacitor c7 to the form VI, coincide with the closing of contact s3 by a cam m on the shaft of the receiver, a substantially constant negative voltage holds V7 non- conducting. A positive voltage derived from the valve V7 via diode V8 holds valve V9 conducting and relay L2 is energized so that contacts s4 are held open, and when contacts s5 are closed by a cam n on the recording apparatus, the circuit of the phase-adjusting solenoid Ls is open, and adjustment is not effected. If, for any reason, signals fail to arrive, the non- existence of the framing pulses allows V7 to conduct. The valve V9 becomes non-conducting and over closed contact s4 the phaseadjusting device L2 could be operated when contacts s5 are closed. This is prevented since relay L becomes energized, and the closure of contacts s1 applies a positive voltage to the grid of valve V9 which conducts and operates relay L2 to open contacts s4 in the circuit of the solenoid Ls.
Patent GB-635073-A (GB)
Title: Improvements in or relating to radar systems
IPC: G01S19/24
Filed: 1947-02-20
Abstract: 635,073. Cathode-ray oscillographs. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 20, 1947, No. 5044. Convention date, June 25, 1941. [Class 37] [Also in Group XL (c)] An existing circular trace on the screen of a cathode-ray tube 25 (see Group XL (c)) which is produced by conventional phase splitting means 29 connected to co-ordinate deflecting plates is transformed into a spiral trace by means including a sawtooth voltage wave produced in a network R2, C2 and connected to the radial deflecting electrode 23.
Patent GB-922563-A (GB)
Title: Improvements in shearing mechanism
IPC: B23D31/04
Filed: 1960-02-12
Abstract: 922,563. Shearing. MOELLER & NEUMANN G.m.b.H. Feb. 12, 1960 [Feb. 14, 1959], No. 5058/60. Class 83 (4). Shears 3, 4 for trimming the opposite edges of a plate 5 on the shearing line of a platerolling train each have a fixed bottom blade and a movable top blade, the return path of which after a cutting stroke differs from the cutting path. Shears 2 crop the end of the plate, which is fed along a roller-table 1 by driven rolls 12, 14 and guided by edge-rolls or rails 13 and rolls 8 carried by the shears 3, 4. The trailing end of the plate is guided by a carriage 10 on rails 11 and fixed to the plate by a clamp or magnet. Instead of the driven rolls 12, 14, the carriage 10 may feed the plate, assisted by driven rolls (not shown) on the shears. Lateral sections on the trimming cutters sever the trimmed margins into short lengths discharged by a band conveyer 6. The shears 3, 4 may be moved apart between adjustable stops during return strokes of the cutters. If these are on pivoted beams, the beams or the beams and their pivots may be withdrawn during return strokes. The movable blade or blades on each side of the table may rotate (Fig. 2, not shown), being driven by an intermittently or continuously rotating shaft. The plate is clamped and advanced between trimming cuts. If the blade is reciprocated hydraulically or by a crank mechanism 39, Fig. 3, both guides 35, 36 may be moved for return strokes of the blade 38 or, as shown, the guide 36 may be turned about its pivot 40 by an eccentric 42. In a modification, Fig. 4, the guide 45 for the cutter-beam 37 is withdrawn by hydraulic cylinders 49 on rods 47 in screw threads in the tapered guide 45. Stop-nuts 53, 54 limit movement of the guides, which may be arranged to pivot on the rods 47. Movements of the guides are controlled automatically, and it may be necessary only to loosen them so that during return strokes of the cutters the bearing pressure of the cutters on the work is reduced. The movable cutter may pivot on its beam into the release position.