baber/WOPTO huggingface dataset:
Patent GB-861950-A (GB)
Title: Improvements in electric bells
IPC: G10K1/064
Filed: 1957-02-14
Abstract: 861,950. Electric bells. ASSOCIATED FIRE ALARMS Ltd., and TAYLOR, W. F. Feb. 13, 1958 [Feb. 14, 1957], No. 5137/57. Class 13. The interrupter mechanism of an electric bell intended for use as a fire alarm and having a slow beat comprises contact arms 21, 22 arranged for actuation by slanting contact plates 18, 19, the plates being carried by a supporting bracket 17 on an armature 11 which is pivoted at 12. Fig. 1 shows the contact arms in the attracted position of the armature and Fig. 3 the various contact positions relative to the bracket 17 during an operating and release cycle. Initially, at position A, the coil circuit is completed through the contact arms by way of an auxiliary arm 30 and contact 31. As the armature responds, this electrical connection is broken as the different angles of the slanting contact plates move the contact arms 21, 22 apart, and the circuit is taken over by engagement of contacts 24, 26 with their respective slanting contact plates. After position B, and before the armature reaches the end of its attraction stroke, the coil circuit is interrupted by contact 26 disengaging from the slanting contact plate 18 and taking up position C. This circuit interruption is maintained during the period of armature release since a rubbing surface 27 of contact spring 21 moves over an insulated upper surface 18a of the slanting contact plate 18 as shown at position D.
Patent GB-1367660-A (GB)
Title: Circuit for generating a difference current value between a pair of current mode input signals
IPC: H03K3/023
Filed: 1971-11-23
Abstract: 1367660 Transistor amplifying circuits MOTOROLA Inc 23 Nov 1971 [10 Dec 1970] 05196/74 Divided out of 1367659 Heading H3T In a circuit for generating the difference between two input currents, the one current is applied directly to the base of a transistor 53 and the other to the base of a second transistor 70, the collector of which is connected to the base of transistor 53: a diode 71 is connected by its anode to the base of transistor 70, its cathode being connected to the emitter. The arrangement forms the input to an amplifier, the collector of transistor 53 being connected to the base of emitter-follower 57 which drives output emitter-follower 59; a further transistor 60 comprises emitter load for transistor 59 and collector load for transistor 57. A transistor 45 forms the emitter load of emitter-follower 57, being biased via transistors 40, 42, 43. The transistor 60 is biased from diode 48 which derives current from the emitter circuit of transistor 40 via resistor 47. The arrangement is a modification of an amplifier with only a single input (Fig. 1, not shown) in which transistor 70 and diode 71 are omitted; in addition, transistor 53 may be replaced by a pair of transistors (53, 54) in cascode connection.
Patent GB-665545-A (GB)
Title: Improvements in or relating to extrusion machines
IPC: B29C48/07
Filed: 1948-02-23
Abstract: 665.545. Extruding tvre treads. FIRESTONE TIRE & RUBBER CO. Feb. 23, 1948 [March 26, 1947], No. 5274/48. Class 87(ii) The extrusion head 40 of a machine for extruding tyre treads has recesses 44 with undercut ribs 45 to secure one or two removable baffles 46 which extend through the entire axial length of the extrusion head. Each baffle is changed when a major change in the die plate 25 is made. The baffles may have holes to facilitate their removal. Escape holes 53, Fig. 4, for excess material, may be provided in the die plate, when the extrusion orifice is small, and the excess material may be returned to the machine. The head is fixed to the machine by bolts 42. The die plate 25 may be held in position by bolts 26, screws 126 and a pivoted bar 28. The weight of the bar 28 may be supported on an adjustable lug 36. Conduits 52 may be provided for cooling fluid.
Patent GB-608346-A (GB)
Title: Improvements in or relating to torsion spring systems
IPC: F16F1/14
Filed: 1946-02-20
Abstract: 608,346. Torsion-bar springs. MENSFORTH, T., and FIRTH & J. BROWN, Ltd., T. Feb. 20, 1946, No. 5339. [Class 108 (iii)] Means are provided in a torsion spring system whereby the stiffness of the spring is automatically and continuously varied throughout a part or whole of its deflection. In the construction shown, the torsion rod 12 is rotatable at the outer end 16 in a bearing carried by a concentric casing 10, the inner end of the rod 12 being anchored to the casing. The casing which may be in two parts, bolted together as shown by bolts 11 or alternatively may be broached from a solid tube, has two abutments 21, Fig. 3; diametrically spaced and extending axially along the bore of the casing 10. Faces 18 are machined on opposite sides of the bar 12 in such a way that the angle formed between the faces and a reference plane containing the longitudinal axis of the bar varies progressively along the bar. Each face is arranged to engage the extreme inner end portion of the respective abutment 21 as shown in Fig. 3. On deflection of the bar 12 by an operating arm 15, the point of contact of the faces 18 with their respective abutments 21 progress from the inner to the outer end of the bar. The space 23 between the rod 12 and casing 10 may be sealed by a bush 22 and filled with oil or grease. In an alternative arrangement, not shown, the torsion rod may be of circular section and provided with one or more longitudinally disposed ribs or splines adapted to engage one or more similar ribs or splines arranged on the bore of the casing, the point of engagement being caused to vary progressively on deflection of the bar by disposing the casing ribs and/or the torsion bar ribs helically in relation to the longitudinal arms of the assembly. The pitch of the helically arranged ribs may be made to vary along the length of the casing or bar. In both constructions, the casing may be anchored at both ends to the respective member of the parts between which the spring assembly is mounted. Alternatively, the casing may be anchored at one end or at an intermediate position, in which case it will be stressed in torsion and will contribute to the resilience of the assembly. In the latter case, the cross-sectional area of the casing may be varied to influence the deflection characteristic. The cross-sectional area of the torsion bar may also be varied in relation to its length. The variation in angular disposition between the faces or ribs on the bar and the abutments on the sleeve may be made zero for part of the length at the outer end of the bar so that the assembly has a constant rate over a given range of operation.
Patent GB-961880-A (GB)
Title: Improvements in spring structures and articles incorporating such structures
IPC: A61F6/08
Filed: 1962-02-12
Abstract: 961,880. Pessaries. ORTHO PHARMACEUTICAL CORPORATION. Feb. 12, 1962 [March 1, 1961], No. 5346/62. Heading A5R. [Also in Division F2S] A spring assembly for a spring ring pessary comprises a helical spring 12, Fig. 1, wound around a flat spring 10 the width of the section of this spring being in the plane of the ring. The inner spring may be made by bending a strip to form an annulus and securing its overlapped ends by a clip 11, Fig. 2, but it may also be formed with more than one convolution, to provide increased rigidity, when required. This assembly is enclosed within the beaded rim of a diaphragm pessary. Specification 891,732 is referred to.
Patent GB-1044413-A (GB)
Title: Egg trays
IPC: B65D85/32
Filed: 1965-02-08
Abstract: 1,044,413. Egg trays and boxes. KEYES FIBRE CO. Feb. 8, 1965 [March 9, 1964], No. 5454/65. Heading B8P. A moulded pulp sheet egg tray has a plurality of egg-receiving pockets 30 (Fig. 2, not shown), with four upstanding posts 34, 46 (Fig. 3, not shown), surrounding each pocket and generally occupying the four corners of an imaginary square. The pockets 30 are formed by a plurality of hollow posts 36 extending downwardly and arranged in rows. Ribs 38 connect upwardly extending adjacent posts and encompass each pocket 30. The posts 46 extend to a height at least as great as the maximum anticipated height of eggs which the pockets are to receive while the posts 34 extend only to a height which is up to one half or twothirds the height of the posts 46 (Fig. 5, not shown). Posts are arranged such that each pocket 30 is provided with one higher post 46 and three lower posts 34 (except pockets around the outer edge 32 of the tray which have half width posts 40 of the same height as the posts 34) and are interconnected by edge ribs 42 being higher than the ribs 38, at the outer edges. Flattened flanges 40<SP>1</SP> and lugs 44 are provided as aids for de-stacking and stacking. The provision of lower posts 34 facilitates gripping and removal of eggs without interference from the higher posts 46. A box 10 (Fig. 1, not shown), of cardboard, chip-board or plastics accommodates a tray filled with eggs and comprises end walls 20 with a tuck-in flap 22 and a window 24 with a flexible transparent pane 26 in an upper wall 14. The height of side walls 18 corresponds to the height of the posts 46 which thus support the upper wall 14 and allow cartons 12 to be stacked without danger of crushing the eggs.
Patent GB-363901-A (GB)
Title: Improvements in or relating to railway vehicles
IPC: B61F7/00
Filed: 1931-02-23
Abstract: 363,901. Railway vehicle undercarriages. KARRIER MOTORS, Ltd., CLAYTON, R. F., AVERNS, R. DEAN-, and MEEK, P., St. Thomas' Road, Huddersfield. Feb. 23, 1931, Nos. 5574 and 6391. [Class 103 (vi).] Each axle a of a railway vehicle is provided with inner and outer pairs of wheels b, d respectively, adapted to suit tracks of different gauges, either or both sets of wheels being so mounted on the axle as to be capable of being raised to and held in an inoperative position above the rail level. In the arrangement shown two inner and smaller wheels b are secured to the axle a, while two outer and larger wheels d are designed to be swung about an axis f<1> eccentric to the axle a either to a raised inoperative position, or alternatively to a lower operative position where they are secured to and rotate with the axle a. The axis f<1> is constituted by a tube adapted to be inserted into a sleeve f mounted loosely on the axle a, the latter and the sleeve f, during the swinging movement of the wheel, moving within a semicircular slot d<1 >in the wheel. Attached to the axle a is a disc or plate h having at diametrically opposite points two holes h<1> into which removable pins may be inserted so as to engage two holes d<2> in the wheel and to secure the wheel in its lower position to the axle. In addition, the plate h has a series of circularly disposed holes h<2>, into one of which and into the tube f<1> one of the pins, now removed from the holes h<1>, d2, may be inserted so as to permit the wheel to be swung upwards to the inoperative position, where it is fixed by pins engaging holes in the vehicle hornplates or similar fixtures. These wheel changes are effected at points e<1> where the outer rails e are depressed below the level of inner rails c, inclines e<2> leading to the normal level. According to modifications the wheels may be arranged to rotate on eccentrics secured to the axle, or, if desired, all the wheels may be adjustable and of the same diameter, and they may also be adjustable along the axle.
Patent GB-114626-A (GB)
Title: Apparatus for Drying and similarly Treating Materials.
Inventor: BROWNELL WILLIAM MASON
IPC: F26B11/04
Filed: 1918-04-02
Abstract: 114,626. Brownell, W. M. April 6, 1917, [Convention date]. Continuous-discharge apparatus, rotary.-Relates to rotary apparatus for drying grain, sugar, vegetables, fruits, &c. The material is carried through volute-spiral passages from the exterior to the centre of a rotating cylinder and is then returned outwards through similar passages and after traversing the whole series of passages is discharged intermittently. The cylinder is built up of a series of sections a, b separated by transverse gauze, &c., diaphragms g. Each section is provided with a strip l bent into a spiral so as to form a continuous passage from the periphery to the centre of the cylinder The strips are supported by spokes p provided with distancepieces w and carry buckets u, v, for distributing the material. The spirals are arranged alternately in opposite directions and each section communicates with the adjacent section so that the material is carried through one section after another. The last section is fitted with a discharge-door o which is opened intermittently by a cam 6 as the cylinder revolves. Hot air &c. is forced into the cylinder through the end 2, the material being fed in at the opposite end at h.
Patent GB-555682-A (GB)
Title: Means for driving plaster composition mixers and the like
IPC: B01F7/00
Filed: 1942-04-27
Abstract: 555,682. Mixing-apparatus. GYPROC PRODUCTS, Ltd., BROWNE, N. W., and STRABLE, K. F. April, 27, 1942, No. 5646. [Class 86] In a mixing-machine, for example for mixing a slurry of calcined gypsum and water, the driving mechanism is arranged to prevent the mixture from creeping to the lower parts of the driving shaft of the stirrer and scraper. These devices are carried respectively by co-axial shafts 6, 7, the latter being in two parts connected by spiders 15, 16 the arms 17, 18 of which are overlapped at 19, 20 and bolted together, while the inner shaft 6 has mounted upon it a boss 21 carrying a disc 22. The lower ends of the shafts are housed in a casing 3 containing oil, the shaft 6 being driven by gearing 8, 10 from a shaft 11 driven through a change speed gear by a motor, while the shaft 7 is driven in the opposite direction by gearing 12, 13 from a shaft 14 driven by a separate motor. Specification 555,683 is referred to.
Patent GB-438483-A (GB)
Title: Improvements in photographic contact printing apparatus
IPC: G03B27/02
Filed: 1935-02-21
Abstract: 438,483. Illuminating transparencies. NIGON, G. L., 91<bis>, Rue Truffaut, Paris. Feb. 21, 1935, No. 5658. Convention date, Feb. 21, 1934. [Class 3 (ii)] [See also Group XX] A glass plate 11 of which the underside 12 is frosted is illuminated by four electric lamps or neon tubes 8 provided with cylindrical casings 6 having flanges 7 engaging the edges of the plate. In each casing 6 is a reflector 9 and a colour filter 10 transmitting light of wavelengths of the order of À561 microns. In a modification, light is directed on to the bevelled edges of the plate by mirrors from a lamp disposed centrally below the plate, shields being interposed to prevent direct illumination.
Patent GB-576695-A (GB)
Title: A new or improved portable mechanical fire alarm device
IPC: G08B17/02
Filed: 1944-08-31
Abstract: 576,695. Fire alarms. MANN, W. W. Aug. 31, 1944, No. 5853. [Class 47 (i)] A mechanical fire alarm is provided with a spring motor adapted to operate a gongstriking member and having a brake drum normally kept stationary by a brake held in pressure contact with the drum by a temperature-sensitive member. As shown, two strips of metal 10 are bent into a U-shaped formation connected together at the top by a frame 13 to form a four-legged support. A spring in a casing 15 is geared to a spindle 17 having a pair of collars 18 connected by spring strips to which balls 20 are attached. When the spindle 17 rotates, one of the collars 18 slides along the shaft so that the balls 20 strike a cup-shaped gong 21 which is secured to the support 10 by hook members 24. A brake drum 27 on a spindle 26 of the gearing is normally held from movement by the weighted arm 29 of a lever pivoted at 28. The other arm 30 of the lever and a spring strip 33 are retained in the position shown by means of a piece of paper 41 to which they are secured by clips 31 and 38 respectively. The paper may have downwardly extending integral strips, and it burns in the event of fire, releasing the lever arm 30. In a modification, the paper 41 is replaced by a member fastened by an element sensitive to a relatively small increase in temperature such as a rivet of fusible metal or a bi-metallic strip.
Patent GB-1299961-A (GB)
Title: An adding, subtracting and totaling calculator
Inventor: OBA HARUTARO
IPC: G06C7/10
Filed: 1970-02-06
Abstract: 1299961 Controlling pin carriage shift TOKYO ELECTRIC CO Ltd 6 Feb 1970 [6 Feb 1969 20 Feb 1969 (3) 21 Feb 1969] 5885/70 Heading G4B The Specification describes some "of the features of the calculating machine described in 1,299,744. The claims relate to the shifting of the pin carriage during the order-by-ordor setting up of a number. Each shift is effected in two parts, which together amount to a shifted distance corresponding to one order. As shown, depression of any digit key 19 results not only in depression of the corresponding pin, but also in the pivoting of a lever 20, the head 21 of which depresses the carriage escapement pin 4 of the appropriate order. This pin is now clear of a stop 12 and the carriage moves leftwards under a spring-loading until the next lower order escapement pin 4 abuts head 21. On releasing the digit key 19, lever 20 pivots clockwise allowing this next lower order escapement pin 4 to move past the head 21 into engagement with stop 12. The escapement pins 4 serve also as digit nine pins.
Patent GB-851007-A (GB)
Title: Scanning device for a circular antenna array system
IPC: G01S3/54
Filed: 1959-02-20
Abstract: 851,007. Radio direction-finding. STANDARD TELEPHONES & CABLES Ltd. Feb. 20, 1959 [Feb. 22, 1958], No. 5936/59. Class 40(7). [Also in Group XXXVI] The invention relates to a cyclic switching arrangement for a circular array of individual aerials arranged to couple the aerials to a transmitter or receiver in a given order so as to simulate the effect produced by a moving aerial for beacon or direction-finding purposes. It is particularly concerned with arrangements in which an apparent oscillatory motion is superposed on a rotational movement. In a directionfinder embodiment utilizing twelve aerials 1 arranged regularly round a circle each aerial is connected to a corresponding segment 3 on a stator shown schematically at 2. Aligned with each segment 3 and spaced therefrom on the stator are further segments 4 all of which are coupled together and connected to receiver 17 by line 5. Coupling between segments 3 and associated segments 4 is achieved capacitively by segments 7 arranged on a rotor 6. A generator 8, 9 and ring-type goniometer 12, 13 fed therefrom over slip rings 11 provide reference outputs over lines 15 and 16 to the direction indicator 19. In this embodiment a simple switching oscillation consisting of three single steps forward alternating with two single steps backwards is used and the regular spacing and width of the stator segments 3 and 4 is as indicated in Fig. 3a. Fig. 3b shows the spacings and arrangement of the five double segments 7 on the rotor. Each pair of rotor segments is coupled by a small inductor 22 which forms a series resonant circuit at the midfrequency of the operating band with the rotorstator segment capacitances. Wide band matching is obtained in known manner by providing also a parallel resonant circuit consisting of the inductor 24 resonating with the earth capacitance of the switch elements. Instead of capacitive coupling inductive coupling may be used and a way in which this can be done utilizing ferro-magnetic elements on a rotor coupling pairs of coils on a stator is described with reference to Fig. 2 (not shown). It is also stated to be possible to use variable reactances in each aerial feed and to control these by voltages generated photo-electrically by light directed to a slotted stator and rotor co-operating in a way analagous to that described above. The Specification describes how the width and spacings of the segments are related to the number of aerials and the switching sequence required.
Patent GB-955289-A (GB)
Title: Carrier roller bearing for rotary drums, for instance rotary cylindrical furnaces, tube mills or the like
IPC: F16C13/04
Filed: 1963-02-14
Abstract: 955,289. Bearings. WESTFALIA DINNENDAHL GROPPEL A.G. Feb. 14, 1963 [Feb. 16, 1962], No. 5987/63. Heading F2A. The bearing block 3 of a roller 2 supporting a rotary drum 1, e.g. a rotary cylindrical furnace, tube mill &c., is adjustable by a screw 5 threaded in an abutment 6 and bearing against an intermediate member 4 which has a passage 11 through which fluid under pressure can be admitted to an annular chamber 8 to press apart the member 4 and an annular plunger 9 so that the plunger 9 engages shims 10 to relieve the load on the screw whereby adjustment of the latter is facilitated. After such adjustment the fluid pressure may be released.
Patent GB-1347834-A (GB)
Title: Automobile hoist
IPC: B66F7/00
Filed: 1972-02-09
Abstract: 1347834 Garage lifts J F HERNICK 9 Feb 1972 [22 Feb 1971] 6111/72 Heading B8H The vehicle supporting tracks 10 of a garage lift are provided with props 8 and may be disconnected from the lift ram 4 whereby the tracks may be supported in a raised position and the ram may be retracted to provide access to the underside of the raised vehicle. In one embodiment, the tracks 10 are provided with bars which are projectable laterally therefrom by hydraulic rams to engage in recesses in a crosshead on the lift ram 4, Figs. 2, 3 (not shown). Alternatively, the crosshead may be provided with tongues which are projectable to engage under ledges on the tracks, Figs. 4 and 9 (not shown). In a further embodiment, Fig. 1, the ram 4 may be provided with a vehicle support 30 provided with pivoted arms 32 which may support the vehicle directly or which may be engaged with the tracks 10, Each prop 8 consists of a tubular member 40 slidably supported in a guide sleeve 42 and adapted to be supported at an adjusted position by a pin 48 passing through one of a series of holes 46.
Patent GB-115263-A (GB)
Title: Improvements in and relating to Electric Cut-out or Protective Arrangements for Electrical Systems.
Inventor: JOHN WILLIAM JAMES
IPC: H02H3/16
Filed: 1917-05-01
Abstract: 115,263. John, W. J., and John, J. May 1, 1917. Protective arrangements.-To protect electric systems in the event of leakage, a resistance R is connected across the two poles A, B of the supply and the central parts of the resistance connected up to contact studs K constituting a variable rheostat the movable contact arm L of which is connected through a galvanometer or ammeter G, and through a shunt-connected main cut-out C as described in Specification 17901/15, to an earth conductor E laid alongside the supply cables. The earth conductor may be the metallic sheathing of the supply cables. If a leakage occurs on one of the mains, the leakage current returns through the meter G and this current can be reduced by moving the rheostat arm L. When the limit position of the arm is reached, further increase in the leakage current causes the operation of the cut-out C. Alarm bells may be used in connexion with the meter.
Patent GB-608718-A (GB)
Title: Improvements in or relating to storage devices for a record mechanism, and the record mechanism including the improved storage device
IPC: G11B15/18
Filed: 1946-02-28
Abstract: 608,718. Wire recording and reproducing apparatus. BARRETT, E. L. Feb. 28, 1946, No. 6230. [Class 40 (ii)] In a sound - recording and reproducing apparatus for steel wire, the wire 20 is freely coiled in storage-chambers 35 and is drawn out of one chamber over the transducer 23 and pushed into the other chamber by means of wheels 21, 22 between which the wire is gripped. The lower wheel 21 is driven by a motor 43, and stopping or starting may be effected by clutch-surfaces 45, 46 which are engaged or disengaged by means of a plunger 49. The upper wheel 22 may be integral with the detachable storage-unit as shown in Fig. 3. In a further embodiment, Figs. 10 to 14 inclusive (not shown), the driving-wheel 21, the transducer and erasing head also are made integral with the storage-unit.