baber/WOPTO huggingface dataset:
Patent GB-1184705-A (GB)
Title: Improvements in or relating to Television Camera Head Amplifiers
Inventor: MARCH ROY COLLINS
IPC: H03F5/00
Filed: 1967-06-01
Abstract: 1,184,705. Transistor amplifying circuits. MARCONI CO. Ltd. 14 March, 1968 [1 June, 1967], No. 25390/67. Heading H3T. A television camera head amplifier comprises a cascade circuit in which a field effect transistor VT3 or thermionic valve (Fig. 1, not shown) comprises the first amplifying element, and a junction transistor VT1 forms the second, feeding into an emitter-follower stage VT2, from the emitter of which negative feedback is applied to the input of the arrangement. As shown, the feedback network comprises a potentiometric arrangement of resistors R8, R9, and adjustable capacitor C8 and the resistor R1. The collector circuit load of transistor VT1 includes a variable inductor L1 for adjusting the high frequency response.
Patent GB-934081-A (GB)
Title: Improvements in or relating to the automatic adjustment of disc brakes
IPC: F16D55/2255
Filed: 1961-07-13
Abstract: 934,081. Automatic adjuster for disc brakes. H. TEVES, E. A. TEVES, and M. TAUSEND, [trading as ALFRED TEVES MASCHINENUND ARMATURENFABRIK KOMM.-GES.]. July 13, 1961 [July 19, 1960], No. 25395/61. Class 103 (1). [Also in Group XXXII] An automatic adjusting device for disc brakes having restoring springs 5 for pressure plate 4 wherein a disc 20 having spur toothing 21 is connected by a spring catch disc 23 to spur toothing 22 of part 7 of the brake housing 1, by a longitudinal guide groove to a screwed-in bushing 10 in the brake housing 1 and by a bolt 17 to pressure plate 4, the bolt 17 and bushing 10 being mutually contrarily threaded. Disc 20 is secured to a spline guided member 14 by e.g. a circlip 19. Similar brake systems may be mounted on both sides of the axially fixed, single disc 3. Pivoting of hand brake lever 2 against member 14 clamps pressure plate 4 and friction pad against the disc 3, the rotation of which causes the pressure plate 4 to increase its pressure acting against the disc by roller 13 and inclined recess 12. The spring catch disc 23 comprises a series of opposed spring teeth 24, 25 which, when the brake is released are engaged by and compressed between spur toothed disc 20 and spur toothed member 7. This compression effectively lengthens teeth 24, 25 and effect the rotation of disc 20 and hence the longitudinal movement of screw 17 and its associated members. The automatic adjusting device may be incorporated in a floating hand brake, the fulcrum of the double-armed lever acting against member 14, the other arm of the lever acting through a connecting rod on the caliper arm on the other side of the disc 3.
Patent GB-1243416-A (GB)
Title: Apparatus for filling moulds with powdered or granular plastics
Inventor: KORNER JOACHIM
IPC: B30B15/30
Filed: 1969-05-19
Abstract: 1,243,416. Injection moulding. ERICH LENDLE & CO. KG. 19 May, 1969 [28 May, 1968], No. 25473/69. Heading B5A. Apparatus for filling a mould with powdered or granular plastics comprises an injector having a casing and a nozzle orifice 10, an axially movable plunger 3 for opening and closing the nozzle orifice and the mould, a connection 2 for introducing plastics material from a storage container, channels 6 and 8 for compressed air for moving the plunger 3, a channel 18 leading into a guideway 24 for the plunger and providing a passage for air from the casing 1 and past a reduced diameter portion 25 of the plunger when in its uppermost position. When the plunger is in its bottom position it closes the channel 18 so that full pressure is available for raising the plunger. An injector passage 19 is adjustable by means of a valve stem 21 and screw spindle 22.
Patent GB-895744-A (GB)
Title: Improvements in or relating to variable speed gears
Inventor: COOPER ROY
IPC: F16H9/12
Filed: 1958-08-09
Abstract: 895,744. Expanding-wheel gear. COOPER BROS. (STOCKPORT) Ltd. Aug. 6, 1959 [Aug. 9, 1958], No. 25651/58. Class 80 (2).  Expanding-pulley gearing, described as applied to a drilling-machine, comprises a driving pulley 14 on a motor shaft 12 connected by a V-belt 21 to a countershaft double pulley 19 in turn connected by a V-belt 20 to a pulley 13 on a drill spindle 11, operation of a handle 18 and a ratio selecting lever 16 moving the countershaft pulley 19 in the plane of the driving and driven pulleys to vary the ratio, the ratio-selecting lever pivoting on a stud 15 and having an inclined cam slot 15b coacting with a fixed pin 15a so that as the lever turns, it slides axially along its pivot stud, an adjustable stop 31 on a pointer 24 coacting with an abutment 30 on the hub 16a of the selecting lever and being turned by the axial movement of the latter so that a frame 26 on the pointer is moved over a scale 28 outside a casing 22 surrounding the gear to indicate the selected ratio. Specification 893,815 is referred to.
Patent GB-806856-A (GB)
Title: Improved slicing device
IPC: B26D1/25
Filed: 1956-08-22
Abstract: 806,856. Slicing and chipping potatoes. WILCE, G. R. and SHEPPARD, D. Aug. 21, 1957 [Aug. 22, 1956], No. 25673/56. Class 5(1). [Also in Group VI]  Potatoes are sliced and/or chipped by a blade 28 secured on the rotated spindle 9 of a domestic food mixer, the blade rotating in a chamber formed by spaced plates 10 and 22 secured on the casting 4. The potatoes are pressed through a feed tube 26 or 22 to contact the spiral blade 28, the cut away of which allows the potato to be pressed against an adjustable slice thickness gauge plate just before the blade edge swings round to cut the slice. The blade may have upstanding knives at various radial distances to cut grooves in the potato end, so that on the next rotation they are cut off by the blade edge to form chips. The blade also has claws or lugs 26 to sweep each slice (or chips) down to a shoot. The feed tube 26 may be inclined and may be divided into smaller tubes to receive bean pods for slicing.
Patent GB-773941-A (GB)
Title: Improvements in and relating to instrument casings
IPC: G01D11/30
Filed: 1955-09-07
Abstract: 773,941. Indicating-apparatus. ROCH SOC. A R.L., P. Sept. 7, 1955 [Jan. 31, 1955], No. 25690/55. Class 106 (4). Indicating-apparatus in a casing comprises a fixing lug 3 which can be adjusted in relation to the bottom 2 of the casing and locked in any desired position about an axis which is perpendicular to the bottom 2. The lug 3 is mounted on a pin 8 whose head 8<SP>1</SP> is countersunk inside the bottom 2 or on a pin in one with the bottom 2. Headless or headed set screws 5 in the thickness of lug 3 have conical ends offset above the centre line of a cylindrical hole in the pin 8 or above the bottom of a V-shaped groove round the pin so that tightening the screws 5 draws the lug 3 against the outer face of the bottom 2.
Patent GB-872046-A (GB)
Title: Improvements in or relating to the manufacture of mouthpiece cigarettes
IPC: A24C5/47
Filed: 1956-08-23
Abstract: 872,046. Mouthpiece cigarettes. MOLINS, D. W., and MOLINS MACHINE CO. Ltd. Aug. 21, 1957 [Aug. 23, 1956], No. 25788/56. Class 130. To give smoothed outer edges to the cut ends of mouthpieces formed by the sub-division of a mouthpiece portion T, Fig. 2, a knife 7 has an edge 10 chamfered on both sides and coacts with the portion whilst it is rotated about its longitudinal axis at least once. Groups G, Fig. 1, each comprising cigarette lengths flanking a paper or cardboard mouthpiece closed at each end by a stub, are pushed by an element 2 as in Specification 871,514 to be rolled between a fixed member 6 and a rotary suction drum 3 carrying cork uniting bands B which are wrapped around the groups before the knife 7 subdivides them into mouthpiece cigarettes. Specification 737,329 also is referred to.
Patent GB-303431-A (GB)
Title: Large aperture photographic apparatus
IPC: G03B17/17
Filed: 1927-09-30
Abstract: 303,431. Luboshez, B. E. Sept. 3u, 1927. Kinematograph apparatus; lenses ; reflector systems.-Arrangements are described in connection with photographic and kinematograph apparatus using an image forming reflector, such means being particularly adaptable for difficult light conditions, e.g. instantaneous exposures of X-ray images on a fluorescent screen. A very small area of sensitive material 3, Fig. 1 is exposed at the focus of a large mirror 1 and is shielded from the radiation through an X-ray image 2 by a screen 4. In a modification a small reflecting mirror is used at or near the focus, the small area of plate or film being arranged parallel to the axis of the mirror 1. The small mirror mav be curved to correct for aberrations of the mirror 1. For kinematography a narrow film strip 3<a>, Fig. 3, may be fed across the focal plane within a channel 6, an exposure gate 7 being arranged at the focal plane; or to further minimise obstruction the film may be turned over and emerge adjacent to its position of entry. Focussing or visual inspection of the film as it is taken, may be effected through a small opening 8 in the mirror 1. With a parabolic mirror 1, Fig. 7, double coincident images at the focal plane 7 may be produced. These may be on separate films or on a double coated film. The shutter used consists either of a narrow opaque sector of an annulus rotating on an axis outside the mirror, and mounted by spokes on a narrow support, or alternatively a sliding form of shutter may be reciprocated within the film guide 6. To correct for aberrations and especially for taking photographs at short range, a lens 21, Fig. 12 may be used between the object and the mirror 1 to obtain a parallel beam; or, alternatively, a small bi-concave mirror may be used near the focal plane. A reflecting objective described consists of a biconvex lens having one surface 1<a>, Fig. 14, coated with a reflector, and of a curvature to form an image at infinity; the other surface 24, being of a curvature in an annular part to convert a diverging beam from an object into a parallel beam within the lens, and concave in its central portion 25 where the reflected image forming rays emerge. In the Provsional Specification the use of a hinged and a cylindrical shutter are mentioned; and' focusing may be effected by a reflecting mirror behind the exposed film.
Patent GB-857730-A (GB)
Title: Improvements in spark-erosion machines
IPC: B23H11/00
Filed: 1958-08-12
Abstract: 857,730. Removing metal by spark erosion. NASSOVIA MASCHINENFABRIK H. FRICKET G.m.b.H. Aug. 12, 1958, No. 25877/58. Class 83 (4). A spark erosion apparatus has a worktable 2 rigidly secured by one or more columns 3 to a horizontally adjustable tank 1 and surrounded by a working fluid container 7 movable vertically within the tank. The container 7 is moved by a screw 10 protected from the dielectric fluid, which may be lubricating oil or gasoline, by bellows 11, 12. Tank 1 has a flange 4 mounted for horizontal adjustment on the flange 5 of a main frame 6. The fluid discharges from container 7 through port 13 into tank 1, is withdrawn therefrom through pipe 16 by pump 17, and recirculated to the container through filter 18, valve 21 and pipe 19. A three-way valve 20 enables the pump to draw directly from a main reservoir 15. Overflow ducts 14, 14<11> are provided. In another embodiment the worktable makes a fluid seal within the container 7 and the fluid is discharged through a duct in the worktable support column. A number of vertical screws are used for moving the container.
Patent GB-730715-A (GB)
Title: Improvements in or relating to domestic fire grates
IPC: F24B1/18
Filed: 1951-11-06
Abstract: 730,715. Stoves. ELLIOTT, H. Feb. 6, 1953 [Nov. 6, 1951; Aug. 22, 1952], Nos. 25898/51 and 21074/52. Class 126. [Also in Group XIII] A fitting for a domestic fireplace fits into or in front of the fireplace to cover the chimney opening and has one or more panels movably arranged to convert the fire from an open to a closed fire, one of the panels having a breakdraught opening controlled by a pivotally mounted device which also serves as a damper. A frame 1 of sufficient size to cover the chimney opening of a fireplace is secured to casing 2 forming the firebox and supporting firebars 3. A bracket 7 slidably mounted on a projecting member 6 at the rear of the frame 1 engages the internal wall of the chimney space to hold the structure in place. The lower part of the fireplace is covered by a panel 9 with a hinged air admission door 10. Panels 13, 14 sliding in tracks 15, 16 engage steps 19, 20 formed in tracks 15, 16 to hold the panels in a raised position behind the upper part of the frame 1, or permit them to be lowered to completely or partially close the front of the fire. The lower panel 13 has a large aperture closed by a hinged damper 22 which is secured by a bar 24 passing through a hole in the panel and held by a catch 27 on the front of the damper. The damper 22 may be pushed inwards by the bar 24 to rest on projections 28 formed at the back of the firebox 2 or to rest on the fuel. The back and sides of the firebox 2 comprise two shells enclosing an air space 29, communicating with side passages 31 open at their upper ends. The inner shell is spaced from the outer shell by vertical ribs 34 and a horizontal rib 35 near the base of the fire. The rib 35 is apertured so that air entering the well of the fire through inlets 30 passes up into the spaces between the ribs 34 and into the side outlets 31 so as to warm the room. The space between the shell may contain a water tank, which may be arranged in the upper part of the space 29, auxiliary gas burners being provided in the lower part of the space. In a modification, the ends of the main frame project upwardly into the space behind the lintel of the fireplace, the top of the front of the frame being flush with the upper edge of the chimney opening. The first Provisional Specification describes an arrangement in which the lower panel carries a hood which projects over the front of the fire and engages the top edges of the grate, and a damper plate or plates pivoted under the grate. The dampers may be raised against the firebars to reduce the draught, and are provided with pivots of uneven size to prevent their being wrongly mounted.
Patent GB-518755-A (GB)
Title: Improvements in or relating to negative carriers for photographic projection printing apparatus and enlarging apparatus
IPC: G03B27/62
Filed: 1938-09-05
Abstract: 518,755. Photographic projection - printing apparatus. OPTIKOTECHNA SPOLECNOST S. R. O. PREROV. Sept. 5, 1938, No. 25904. Convention date; Sept. 6, 1937. [Class 98 (i)] A holder for negatives in the form of the cut film, strip film or on a glass plate for use in projection-printing apparatus comprises two jaws 13; 14, Fig. 2, and two frames 1, 2 hinged together to allow also of small movement at right angles to the plane of one frame, one of the frames being provided with a recess to receive the holder of a glass plate negative; the negative itself or a mask for which guiding means are provided. The lower frame 1 has a recess 20, Fig. 4, in which a .glass'plate 4 or a mask 3 'having guiding projections 17 for a film strip is held by turnbuttons 15, and is connected to the frame 2 by a hinge 7, 8 the part 7 having a slotted form to allow of movement apart of the frames under the influence of the springs 6. The upper frame 2 has a recess to receive a second glass plate 5. The jaws 13, 14 are pressed together by a handwheel 18 acting through a spring.
Patent GB-1189676-A (GB)
Title: System of Hologram Reproduction
IPC: G03H1/20
Filed: 1967-06-05
Abstract: 1,189,676. Copying holograms. THOMSON CSF. June 5, 1967 [ June 10, 1966], No.25929/67. Heading G2C. A hologram on a photographic plate 1-2 is copied on to a second photographic plate 3-4 positioned adjacent the plate 1-2 by illuminating the first plate with coherent monochromatic light, e.g. from a laser 5, so as to expose the second plate to the light transmitted by the first, and processing the exposed plate 3-4 to obtain a secondary hologram. A mechanical device 17 brings successive plates 3-4 into the path of the transmitted light, movement of the plates being synchronized with a shutter system 13 by means of a timer 15. The optical path length between emulsions 1, 3 must be shorter than the coherence length of the laser beam.
Patent GB-1141529-A (GB)
Title: Clamping device
IPC: B23B31/40
Filed: 1966-06-10
Abstract: 1,141,529. Work-holders. R. GLIMPEL. 10 June, 1966 [9 April, 1966], No. 25941/66. Heading B3B. A work-holder comprises a body 1, Fig. 1, a sleeve 2 slit at 6, 7 screwed on to the body at 3/3<SP>1</SP> and secured against rotation by a screw 8, and a washer 4 fixed on to a nut 5. The workholder comprises a mandrel, in Fig. 1, which holds the work by expansion of sleeve 2, due to the wedge shape of the screw threads 3/3<SP>1</SP>, when nut 5 is tightened, a removable shoulder 9 being provided. In a modification, the sleeve is formed in two parts separated by a spacer, and having different diameters, the body has an integral shoulder, and the clamping member is formed by a push rod and nut. In a further modification, the work-holder is a chuck, Fig. 3, having a split collet 2. In a further modification, Fig. 4, the clamping member is formed by a rod 5a having a flange 4. The mandrel of Fig. 5 (not shown) has an intermediate member (15) between body (1) and sleeve (2). The mandrel of Fig. 6 (not shown) has a sleeve formed in two parts 2a, 2b separated by a flexible member 17. The work-holding faces of the sleeve 2 may be of non-circular cross-section, and the screw thread 3/3<SP>1</SP> may be of conical form. Nut 5 may be replaced by a pneumatic, hydraulic, electrical or electrohydraulically operated device.
Patent GB-532769-A (GB)
Title: Device for regulating the delivery quantity of multi-cylinder rotary pumps
IPC: F04B1/20
Filed: 1939-09-15
Abstract: 532,769. Swash-plate mechanism. ANSALDO SOC. ANON. Sept. 15, 1939, No. 25944. Convention date, Sept. 22, 1938. [Class 80 (iii)] [Also in Group XXVIII] A rotor 16 formed with cylinder bores 17 parallel to the axis, turns on a fixed pivot 5 having inlet and outlet passages, and carries a pivot 19 driven through a clutch. The pistons are driven by a ring 33, 34 rotating in sliding shoes 49 in a fixed cup 42 the inclination of which can be varied by a handle. The pivot 19 and the ring are connected by a spherical bearing 22 keyed to slide on the pivot and cut away to receive the pivots of two curved keys 31 of rectangular section slidably engaging grooves in the ring.
Patent GB-998891-A (GB)
Title: Improvements in and relating to magnetic core storage devices
IPC: G11C7/02
Filed: 1963-07-01
Abstract: 998,891. Circuits employing bi-stable magnetic elements. INTERNATIONAL BUSINESS MACHINES CORPORATION. July 1, 1963 [June 29, 1962 (2)], No. 25965/63. Heading H3B- [Also in Division H1] A storage device comprises a tubular core 10, Fig. la, formed of magnetic material having a rectangular hysteresis characteristic, a first conductor W being threaded through the bore 12 of the tube while a second conductor B is passed through two holes 14, 16 in the tube wall. The core is cleared by applying a negative pulse to conductor W from a read pulse generator 18 which establishes a unidirectional circumferential flux in the tube, Fig. 2a. Writing pulses are applied selectively to the B and W conductors intermediate the read pulses. If either conductor alone is positively pulsed by a word pulse generator 20 or a bit pulse generator 26, the core flux is virtually undisturbed and only a small spurious pulse is induced in conductor B when a read pulse is subsequently applied; switches 22, 24 being changed over so as to connect conductor B to a load 28. If both conductors are pulsed simultaneously a portion of the core flux is reversed in a distorted circumferential path which passes on opposite sides of the holes 14, 16 as shown in the developed view of the tube W in Fig. 2b. Subsequent application of a negative read pulse and appropriate positioning of switches 22, 24 restores the core flux to its initial state and applies s substantial output pulse to the load. In an application to a matrix store, Fig. 4, tubes 10.1-10.3 each having a plurality of pairs of holes 14, 16, are threaded by bit conductors B1-B3 and word conductors W1-W3 connected respectively to a bit selection and drive unit 46 and a word address and drive unit 46. Discrete portions of each tube provide the various storage locations. Operation is on a word-organized basis, and switches 22.1-22.3, 24.1-24.3 are provided for selectively connecting the bit conductors either to the unit 46 or to respective loads 28.1-28.3. The spurious output pulses may be reduced by biasing the tubes along their length. Permanent magnet bias is used in Figs. 6 and 8, using either a U-shaped magnet 48 or a permanent magnet sleeve 54. Current-carrying bias coils are used in Fig. 7.
Patent GB-1135323-A (GB)
Title: Ventilation systems for gas-fired appliances
Inventor: WHITE TERENCE TOBIAS
IPC: F23N1/06
Filed: 1966-06-10
Abstract: 1,135,323. Induced draught systems. GAS COUNCIL. 8 Aug., 1967 [10 June, 1966], No. 25983/66. Headings F4J and F4W. Combustion products from a gas-fired appliance 1 having a burner unit 3 leave via a ventilating system comprising a primary flue section 4, a break-draught in the form of a draught diverter 5, and secondary flue sections 6, 8 to finally exit through an outlet 9, the flow of combustion products being induced through the sections 6, 8 by a centrifugal fan 7. The draught diverter 5 consists of a baffle plate (29, Fig. 2) positioned within a funnel-shaped member 11. To prevent spillage of combustion products into the room through the top of the funnel 11, e.g. due to blockage of the outlet 9, a temperature sensitive probe 13 actuates a solenoid gas valve (19, Fig. 2) to shut-off gas supply to the burner 3. A further probe (24, Fig. 3) sensitive to residual heat is provided to actuate restarting the fan to cool the first probe 13. Alternatively a flow-sensing device in the form of a vane 35 mounted on an arm 33 and counterbalanced by weight 36 is situated within the duct 6 and acts to cut-off gas supply to the burner when the rate of flow of combustion products falls below a predetermined level.
Patent GB-811589-A (GB)
Title: Improvements in or relating to coaxial cable connectors
Inventor: CLEWES ANTONY BRASHER
IPC: H01R9/05
Filed: 1956-08-24
Abstract: 811,589. Two-part couplings. CARR FASTENER CO. Ltd. Aug. 2, 1957 [Aug. 24, 1956], No. 26030/56. Class 38 (1). In a coaxial cable connector comprising a tubular metal body 1 containing an insulated central pin contact 6 and externally screwthreaded at one end 4 for engagement by an internally screw-threaded sleeve 11, the sleeve 11 has a tapered bore 16 at its outer end which co-operates with the conical surface 28 of a collet 20 which, in the assembled condition of the connector, exerts radial clamping pressure on the insulation 33 of the coaxial cable 32 and also forces the outer conductor 34 into engagement with a metal contact 18 inserted beneath it, said contact 18 having a flange 19 at its inner end which is pressed against the body 1 on tightening the sleeve 11. Both the collet 20 and sleeve 11 are preferably formed of insulating material. Fig. 1 (Complete) shows another construction wherein the central pin is replaced by a socket 40 and the flange 19 of the metal contact 18 has two tongues 46 pressed out therefrom which engage and hold firmly in position the central contact assembly.