baber/WOPTO huggingface dataset:
Patent GB-1415843-A (GB)
Title: Electric immersion heater assemblies
IPC: A47J27/21
Filed: 1972-01-14
Abstract: 1415843 Mounting immersion heaters OTTER CONTROLS Ltd and J C TAYLOR 1 Jan 1973 [14 Jan 1972] 1924/72 Addition to 1316436 Heading H5H [Also in Division H1] The immersion heater of the parent Specification 1,316,436 is modified to enable it to be fitted into the opening in the container wall from the inside without the need to dis-assemble electrically interconnected components thereof. This is achieved by arranging that the imaginary envelope enclosing the components mounted externally of the container lies within the projected area of the radially projecting mounting flange 8 of the mounting head 2 of the unit. The head is secured in the opening by a screw threaded collar which is screwed on to the threaded extension 7 of the head. The immersion heater comprises a "boil-dry" termal switch 3, serially connected to a steam sensitive switch 4 and a steam tube 5 passing through the head 2 and switch 3 to the switch 4, the steam tube 5 having a steam trap 6 surrounding its inlet and as in copending application 4067/71. The boildry switch 3, is mounted in the head 2 so that a conductive sleeve in an aperture 12 makes contact with a cold lead of element 1. A cantilever contact blade 19 is connected to the sleeve and co-operates with a fixed contact on the underside of a projection 21 which electrically connected to a fixed contact 17 (Fig. 1) projecting from the boil-dray switch 3. A brass plate 23 riveted to the moulding of the boil-dry switch: so as to be in thermal contact with mounting head 2 carries a trifurcated retractive snapacting bimetallic spring blade 25 which actuates cantilever blade 19 via a push rod 22. The backwall of the mounting head 2 is curved to conform with the bimetal 25 so that normally the bimetal 25 makes good thermal contact with the head. A screw threaded terminal pin 16 (Fig. 1) projecting from boil-dry switch -is electrically connected to the other heating element cold lead. The steam switch 4 comprises a complex moulding which has a horizontal shelf 32 (Fig. 4D) which separates the contacts 17, 64 of the switch from the steam sensitive trifurcated bimetallic element 71 and the end of the steam pipe 5. The fixed contact 17 of the steam switch 4 is provided on the moulding of boil-dry switch 3. The moving contact 64 is provided on a cantiliver blade secured to a U-shaped metal contact carrier, and is biased by a snap acting bow spring 65. Movement of bimetal 71 is transmitted through shelf 32 by a push rod 36 to blade contact 64 and to a pivotal operating button via a push rod 69. Button 40 projects when the switch is opened to give a visual indication and has to be depressed to reset the switch 4. A cable may be connected to the immersion heater directly or by a plug connector. The steam sensitive switch 4 may be automatically reset and may be in the form of a solid state switching circuit.
Patent GB-1455042-A (GB)
Title: Delta modulator having increased dynamic range
IPC: H03M3/02
Filed: 1975-01-16
Abstract: 1455042 Delta modulation MOTOROLA Inc 16 Jan 1975 [29 April 1974] 1928/75 Heading H3H In a delta modulator a circuit 24 having the non-linear (characteristic A, Fig. 4, is included in the feedback loop between the averaging filter 22 and the comparator 15. Preferably, knees B are at the limits of the modulator dead band so that feedback of the idle pattern is reduced relative to feedback of modulation signal, with consequent increase in the dynamic range of the modulator.
Patent GB-251022-A (GB)
Title: Improvements in or relating to twistlace machines
IPC: D04C5/00
Filed: 1925-01-23
Abstract: 251,022. Noyer, F., and Pilard, P. Jan. 23, 1925. Lace machines.-Relates to weft-inserting mechanism. A vertically-sliding weft carrier 7 is mounted on a reciprocating bar 1 running on rollers 6 and is operated by linkwork 11<c>, 11<d> from a cam 19. The weft is drawn off by a wheel 25 suspended by links 26, 28 from the bar 1 and from a slide 29. The friction of the slide 29 on the bar 3 on which it slides causes the wheel to press on one or other of the bars 3 according to the way the bar 1 is travelling, the wheel being thus always turned in the same direction. The wheel 25 may be held by a spring against the top bar 3 and the spring may be pulled away by a cam acting through linkwork when the bar 1 is travelling in the opposite direction, so that the wheel drops on to the lower bar 3. The bar 1 may be reciprocated by rack- and-pinion gear 38, 39a driven by a cam 36. The apparatus may be duplicated. Mechanism for gripping and retaining the weft below the carriages is described.
Patent GB-365327-A (GB)
Title: Improvements in or relating to sliding windows, shutters and the like
IPC: E06B3/44
Filed: 1931-01-21
Abstract: 365,327. Window-holders. BECKETT, J. E:, WATKINSON, A., and BECKETT, LAYCOCK, & WATKINSON, Ltd., Acton Lane, Willesden, London. Jan. 21, 1931, No. 2105. [Class 44.] A windowholder comprises double channelled members 22 and spring - pressed locking members 35 mounted in channels 10 to engage rigid friction strips 42 which are held by channel arms 41. The window is released by depressing a finger lever 31 which rotates a cam shaft 26 and depresses m e m - bers 35 by end cams 30. As the members 35 are pressed downwards guide pegs 34 engaging inclined slots 40 move them away from the friction strips 42 and leave the window free to slide. A felt or. fibre strip 44 held in a reentrant groove 43 forms the window guide.
Patent GB-973707-A (GB)
Title: Hydraulic reciprocating pumps or motors
Inventor: IFIELD RICHARD JOSEPH
IPC: F01B3/00
Filed: 1962-01-22
Abstract: 973,707. Reciprocating motors and pumps. JOSEPH LUCAS (INDUSTRIES) Ltd. April 19, 1963 [Jan. 22, 1962], No. 2189/62. Heading F1A. In a pump or motor comprising a revolving cylinder block 11, Fig. 1, engaging a non- rotatable, ported block 5 and angularly adjustable with the block relative to a drive member 3 to vary the displacement, block 5 is angularly adjusted and prevented from lifting away from the housing face 8 by spring-loaded pistons 28, Fig. 2, one of which is connected directly to the high pressure port and the other to this port via a control valve. Pistons 28 act between block 5 and members 30, Fig. 1, in the housing. Check valves are provided in the piston circuit so that the appropriate piston-28 is connected directly to the high pressure port when change-over from pump to motor operation is effected. Port block 5 is also biased against the housing by springs 9.
Patent GB-797355-A (GB)
Title: Improvements in or relating to mine roof or like supporting structures
IPC: E21D11/22
Filed: 1955-01-26
Abstract: 797,355. Mine arches. LINSINGEN, M. VON, [trading as BOCHUMER ETSENHUTTE HEINTZMANN & CO.]. Jan. 26, 1955 [Feb. 5, 1954], No. 2329/55. Addition to 709,627. Class 20(2)  The mine arch of the parent Specification comprising curved girders 1, 2 clamped together by a U-shaped clip 4 and a transverse wedge 6a is modified by providing another wedge 16 extending in the longitudinal direction of the girders and arranged between the girder 1 and the wedge 6a and adapted to be moved by frictional contact with the girder 1. Two transverse wedges 6a, 6b may be used driven in opposite directions. The girders 1, 2 are of U-section. The clip 4 is carried along with the girder 2 by an abutment 10 on the clip. Specification 732,233 also is referred to.
Patent GB-538626-A (GB)
Title: Improvements in indicating or recording devices
IPC: G01D15/34
Filed: 1940-02-08
Abstract: 538,626. Temporary recorders. COSTA, H. DA., ROBERTSON, R., and PLESSEY CO., Ltd. Feb. 8, 1940, No. 2469. [Class 106 (iv)] A trace, for instance a fine filament or thread 14, is fed from a short guide tube 15 moved transversely across an endless travelling band 10 in accordance with the quantity to be recorded, between the upper run and a stationary transparent platen 13. The belt is made of baize &c. to make the thread cling and the platen may be curved on the under side to ensure a uniform pressure on the belt. The thread forms an endless loop of greater length than the belt.
Patent GB-773197-A (GB)
Title: Improvements in or relating to driving apparatus for the fare indicating mechanism of taximeters
Inventor: HAUPT WILHELM
IPC: G07B13/00
Filed: 1954-01-27
Abstract: 773,197. Counting-apparatus; taxi meters. KIENZLE APPARATE GES. Jan. 18, 1955 [Jan. 27, 1954], No. 2481/54. Classes 106 (1) and 106 (3). A driving apparatus for the fare indicating mechanism of a taximeter includes an electromagnet and switch means which are closed to register an impulse and opened automatically before reception by the electromagnet of the next impulse. The rotating shaft 20, Fig. 1, carries a snail cam 21 which is connected by a lost motion spring coupling (not shown) to a second snail cam 22. A pin 18 at one end of a pivoted lever 11 rides on the cams 21, 22, the other end of the lever carrying a weight 13. The lever 11 passes through a slot 5 in the armature 3 of an electromagnet 1 and carries a pawl 17 which actuates a ratchet 27 in the train of gears of a counting mechanism. The circuit of the electromagnet 1 includes a contact 15 carried by the lever 11 and a contact 8 carried by the armature 3. Once per revolution of the shaft 20 the lever 11 is rocked counterclockwise by a spring 14, the pin 18 being pulled to the foot of the snail cam 21. The contacts 15, 8.engage, whereupon the electromagnet pulls up its armature 3 and the lever 11 so that the pawl 17 steps on the ratchet 27. The impetus given to the lever 11 is such that when the armature 3 meets a stop 4 the lever continues its clockwise movement separating the contacts 15, 8. The snail cam 22 is rotated ahead of the snail cam 21 by the spring coupling to engage the pin 18 and latch the lever 11 in its switch open position until the end of the succeeding revolution of the shaft 20. The stroke of the pawl 17 is limited by a stop 32<SP>1</SP>. In the second example, Fig. 3, the electromagnet 32 has an oscillating armature 33 coaxial with a ratchet 41 actuated by a pawl 36 fixed to the armature. An extension 35 of the armature carries a contact 38 which cooperates with a contact 47 on a pivoted, weighted lever 44 controlled by two snail cams 21, 22 as in the previous example.
Patent GB-856062-A (GB)
Title: Improvements in clamps for fixing brackets and other attachments to structural sections for use in mines and other places
IPC: E21F17/02
Filed: 1958-01-25
Abstract: 856,062. Brackets. HILL PORTER (NEWCASTLE) Ltd., and TALBOTT, A. C. Jan. 13, 1959 [Jan. 25, 1958], No. 2559/58. Class 52(5) [Also in Groups XXV and XXXVI] A clamp secured to a girder flange by a hook end a and a bent end b which is hammered over to the dotted line position, has a bridge d receiving a cable hanger f &c. In modifications the bridge is welded to or adjustable on the clamp and has plain or tapped holes for securing a supported article.
Patent GB-305627-A (GB)
Title: Heating systems for vehicles
IPC: B60H1/18
Filed: 1929-01-25
Abstract: 305,627. Chanard, A. Feb. 8, 1928, [Convention date]. Heating vehicles.-A suction device b is combined with the engine exhaust pipe a for producing a partial vacuum in a duct c which draws in air heated by contact with the exhaust manifold e, and such air duct c is arranged to pass through an air-heating chamber f into which air is admitted to be heated by contact with the duct and discharged into the vehicle. The inlet end of the air duct c may be enlarged so as to surround the exhaust manifold e as shown in Fig. 1, or the air inlet may pass through the exhaust manifold e as shown in Fig. 4. External air enters the chamber f through a device g and leaves it through apertures h. If desired, the pipe c and casing f may be disposed on or beneath the floor of the vehicle, the device g communicating by means of a tube with the casing f. The modification shown in Fig. 6 comprises an inlet k for the exhaust gases, a grating l, truncated conical tubes m leading into the mouths n of tubes o, and an inlet for the air duct c.
Patent GB-1090616-A (GB)
Title: Shoring equipment
IPC: E21D11/12
Filed: 1965-01-20
Abstract: 1,090,616. Shoring for trenches. ALLIED STEEL & TRACTOR PRODUCTS, Inc. Jan. 20, 1965 [Jan. 20, 1964], No. 2598/65. Heading E1E. Shoring equipment comprises opposed rails 12 having hydraulic jacks 32 pivoted thereto as by pins 20 whereby the equipment may be folded for transportation. The jacks are connected in parallel and may incorporate a pistonrod extension adaptor, see Fig. 5 (not shown). The device is provided with lifting bails 46 and the hydraulic jacks may be replaced by pneumatic, screw-type, or ratchet-type jacks.
Patent GB-1276729-A (GB)
Title: Solid state phase controlled voltage regulator
IPC: G05F1/455
Filed: 1969-05-30
Abstract: 1276729 Automatic voltage and current regulation MINNESOTA MINING & MFG CO 30 May 1969 [31 May 1968] 27607/69 Headings G3R and G3X The voltage across a lamp 20 is maintained at a predetermined value by automatic variation of the firing angle of a bi-directional triode thyristor 22 in response to variations of the A. C. supply voltage 24, these variations being sensed by a series-connected lamp 26 and resistor 28 across the lamp 20 and used to vary the resistance of a photo-cell 30 controlled by the lamp 26, so that the photo-cell variation alters the voltage across a capacitor 36 to advance or retard the firing angle according to whether the supply voltage falls below or rises above its normal value. Additional control is provided by a lamp 37 and resistor 38 responsive to the supply voltage, the lamp 37 controlling a photo-cell 40 to vary the voltage across the capacitor 36 and hence the firing angle of the thyristor 22. Typical design values are given for the basic circuit excluding members 37, 38, 40, 42. Thyristor 22 may be replaced by a triode thyristor with a bi-directional diode thyristor in series with its gate. Instead of lamp voltage, the lamp current may be sensed and used as the control signal. Alternatively the photocell may directly sense the light output of the lamp 20. The invention may be applied to control a heating coil load whose temperature is sensed by a thermistor.
Patent GB-1062721-A (GB)
Title: Ciphering and deciphering apparatus
IPC: H04L9/00
Filed: 1965-01-21
Abstract: 1,062,721. Telegraphy. ANSTALT EUROPAISCHE HANDELSGESELLSCHAFT. Jan. 21, 1965 [Jan. 21, 19641, No. 2799/65. Heading H4P. In a ciphering system, when certain predetermined characters are generated by the ciphering, the corresponding input character is sent in clear and the ciphered output inhibited. The generation of other predetermined characters results in the output of the ciphering unit being fed back to the input for reciphering. In an embodiment 5-bit serial characters are converted to parallel form and feed a code converter which produces an output on a different line for each character. Normally a signal on any one input is switched in the ciphering unit, controlled by punched tape or by permutating wheels, to one of a corresponding number of outputs. These outputs feed a code converter which generates 5-bit signals. When any one of certain output lines is energized, however, a switching unit disconnects the output line and instead the energized input line is connected direct to the code converter, whereby the character is not ciphered. Certain other output lines from the ciphering unit are connected back to the input of the ciphering unit for reciphering so that, for example, the character " carriage return " cannot be transmitted. At the receiver, which is similar to the transmitter, an unciphered character is recognized by noticing which output line is energized when the character passes through the deciphering unit. When recognized, the deciphering unit is disconnected and the character passes direct to the output unit.
Patent GB-739365-A (GB)
Title: Improvements in or relating to work-suspending hooks for overhead conveyors
IPC: B61B12/02
Filed: 1954-01-29
Abstract: 739,365. Hooks. UDYLITE RESEARCH CORPORATION. Jan. 29, 1954 [Feb. 16, 1953], No. 2811/54. Class 89(2). A hook for suspending work from a conveyer rail 1 comprises a part 20 to overlie the rail, the under surface 10 of the part making contact across the rail only over a relatively small area 11, and an anti-friction device 8 to run along the rail, the line of application x of the force due to a load suspended from the hook passing between the area 11 and the device 8. When the loaded hook is moved in the direction of the arrow a, a force due to the inertia of the load acts in the direction of the arrow b and reduces the pressure applying the hook to the rail in the region 11 and hence the frictional resistance to starting. The reversal of the forces a and b increases the pressure and so produces a braking action when the hook is brought to rest. In a modification, the line x is arranged so that 75 per cent of the load is supported by the device 8. The rail 1 may be the cathode rail of a plating machine.
Patent GB-657416-A (GB)
Title: Improvements in and relating to catalyst vessels
IPC: B01J8/44
Filed: 1948-01-30
Abstract: <PICT:0657416/III/1> A catalyst chamber has a grid formed of beams 16 extending across the chamber and supported near their ends on means attached to the chamber wall the beams being spaced to give spaces which are small compared with the beam width.  The beams are hollow and terminate in a sloping edge 15 adjacent the chamber wall and are closed by plates 17.  Angle brackets 20 support the beams which are attached thereto by bolts 24 which have a higher expansion coefficient than the beams.  Baffle plates 32, 34 on the beams define overflow <PICT:0657416/III/2> spaces 30, 31 which have outlets therefrom.  Strips bridge adjacent beams and so provide a series of slots.  A sealing plate extends around the inside wall of the chamber between the baffles 32.  Openings 49 in the beam provide access to the bolts 24 so that individual beams may be replaced whilst openings 51 and associated filter 52 permit the escape of gas from the beam.
Patent GB-384123-A (GB)
Title: Improvements in and relating to sockets for vacuum tubes
IPC: H01R33/76
Filed: 1932-02-01
Abstract: 384,123. Thermionic valve-holders. BRITISH THOMSON-HOUSTON CO Ltd., Crown House, Aldwych, London.-(Assignees of Tar, D. R. de; 111, White Horse Pike, Audubon, New Jersey, U.S.A.) Feb. 1, 1932, No. 2999. Convention date, Jan. 30, 1931. [Class 39 (i).] A holder has contacts 15 mounted in openings in an insulating member 10 with their free ends directed away from the entrance for the valve pins 12, and with parts 16 extending radially between the wall of the member 10 and an insulating 'plate 24 so as to form terminals. A single rivet 26 secures the member 10 and the plate 24. The openings are of semicylindrical shape at one side 20, and the opposite walls are rounded at 19 to form seats for the radial extensions 16. A tongue 21, bearing against the valve pin, may be pressed out of each contact.
Patent GB-908725-A (GB)
Title: Improvements relating to electric heaters
Inventor: WATERHOUSE FRANK
IPC: F24C7/06
Filed: 1960-01-28
Abstract: 908,725. Radiant electric heaters; reflectors. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 16, 1961 [Jan. 28, 1960], No. 3140/60. Classes 39 (3) and 126. An electric infra-red space or industrial heater of the type comprising a sheathed resistance element 8, Fig. 3, mounted in front of a parabolic reflector 4 has an elongated main frame 1 of aluminium alloy or similar lightweight metal which is provided with parallel longitudinal channels 3 into which the reflector 4 may slide from either end. The reflector is preferably of anodized aluminium. The heating element is supported by spacedapart support clips 7 having a re-entrant portion defining a stirrup 10 through which the heating element passes, the ends of the clip 7 are bent at right angles to produce portions 6<SP>1</SP>, Fig. 2, which lie in the channels 3 of the frame. Further V-clips 11 are provided which are located as shown so as to restrict movement of the heating element. The device is earthed by a wire extending from near one of the end clips 7 to an appropriate terminal, the wire having a tubular portion crimped to its free end which is soldered to the sheath of the heating element. Slotted cover plates are provided at the ends of the device to cover the terminals. A number of such heaters may be provided in side-by-side relation, and the reflector 4 may be in two parts mounted end-to-end in the channels 3.
Patent GB-413393-A (GB)
Title: Improvements in hinges
IPC: E05D3/06
Filed: 1933-02-02
Abstract: 413,393. Hinges. GIBBS, Ltd., J., and GIBBS, J., 25, Grange Road, King's Heath, Birmingham. Feb. 2, 1933, No. 3174. [Class 65 (ii).] In a casement or like hinge of the kind comprising a link pivoted to the casement, at a point distant from the edge thereof, and to the fixed frame, releasable means being provided normally to prevent relative movement between the link and the casement, this means comprises a rib or projection on one of the latter members adapted to engage releasably between spaced projections or sides on the other. In the form shown, the window frame 11 is provided near the top and bottom with hinge plates 12 having knuckles 15 in which is mounted a rod or tube 18 forming a common hinge pin to carry links 16 respectively above and below the knuckles 15. Each link is of channel section, open on the side towards the window and having a strengthening rib 29, and the outer end of the link is pivoted at 20 to a lug formed on a plate 21 fixed to the window 10 ; stops 27, 28 are provided to limit motion at the respective pivots. The plate 21 has a rib 23 which normally enters between the flanges of the channel link 16, being held in this position by projections 25 on the rib 23 entering slots 24 in the flanges of the link 16 ; these flanges are, however, sufficiently flexible to allow the projections 25 to pass between them under pressure, to release the window from the link.
Patent GB-755238-A (GB)
Title: Improvements in or relating to rotary positive displacement machines and shaft sealing means therefor
Inventor: LINDHAGEN TEODOR IMMANUEL
IPC: F16J15/34
Filed: 1954-02-03
Abstract: 755,238. Stuffing-box substitutes. SVENSKA ROTOR MASKINER AKTIEBOLAG, Feb. 3, 1954, No. 3183/54. Class 122(5) In a rotary positive displacement machine the rotor end shafts 80 are sealed where they extend through the shaft housing 60 by one or more non-rotatable solid rings 124, 126 coaxial with the shaft, engaged by backing rings 128, 130, and each urged into sealing engagement with a flange member provided on the shaft or on the casing by resilient means, such as springs 136, the arrangement being such as to allow relative radial movement to occur between the solid ring or rings and the flange member whilst maintaining the sealing engagement therebetween. The rings 124, 126, if carbon, sealingly surround a sleeve 120 on the shaft 80 and are urged by the springs 136 into sealing engagement with radial faces 138 on housing members 132, 134. In a modification, Fig. 3, a carbon ring 140 housed in a backing ring 144 is radially spaced from the shaft sleeve 120 and has an end face grooved to form three concentric bearing faces 140a, 140b and 140c urged into contact with a radial flange 120a on the sleeve 120 by a spring 142. The backing ring 144 is sealed by a piston ring 148 and prevented from rotating by a pin 150 attached to the housing 146 and engaging a slot in the ring. Specification 645,848 is referred to.