baber/WOPTO huggingface dataset:
Patent GB-208334-A (GB)
Title: Improvements in automatic electric motor control systems
IPC: B60L15/04
Filed: 1922-11-13
Abstract: 208,334. Ferguson, A. D., and Metropolitan-Vickers Electrical Co., Ltd. Nov. 13, 1022. Systems for continuous-current motors; controllers, actuating.-In motor starting systems where a sequence of accelerating steps proceeds automatically subject to the suspending action of a current-limit relay, a two-way manual contact device is used to short-circuit the contacts of the limit relay so as to make one or more non-automatic steps in case of unusual mechanical resistance during the accelerating period. The arrangement described comprises two motors 1, 2 with rheostatic and series-parallel starting and accelerating steps effected by a group of separate switches closed by cams from a drum rotated in a known manner by pneumatic cylinders 19 with electromagnetic valves 20, 21. After a master controller 22 has been moved to the series accelerating position b<1>, the valves 20, 2'1 are intermittently energized and the main controller 18 is advanced automatically. The circuits controlling the automatic advance are subject to interruption by a current limit relay 9, but can, when necessary, be restored by manually closing a twoway switch 52 associated with two sets of contacts 58<a>, 58<b> on the main controller. To make more than one step non-automatioally, the twoway switch must be closed a corresponding number of times on alternate sides. After passing through a@ the series notches, the main drum cannot advance further until the master controller is moved to the parallel position c', whereupon the accelerator proceeds subject to the same automatic and non-automatic conditions as before. The invention is applicable to motors for traction and other purposes.
Patent GB-691406-A (GB)
Title: Improvements relating to floor polishers
IPC: A47L11/16
Filed: 1950-12-20
Abstract: 691,406. Floor polishers. HOOVER, Ltd. Dec. 20, 1950 [Jan. 6, 1950], No. 30990/50. Class 138 (i). A floor polisher of the vertical brush axis type has three brush carriers, one arranged between the other two to carry alternatively a large single brush on the middle carrier or two medium-sized brushes respectively on the outer carriers, and a reduction ratio friction or toothed drive interconnecting an outer carrier to the brush on the middle carrier, so that when a large brush is mounted on the middle carrier its rotational speed will be lower than that of a brush when it is mounted on the outer carrier. The machine, Fig. 1, primarily used for polishing comprises two high speed shafts 12, driven in opposite directions by a motor through a shaft 14 and worm gears 13, which shafts have ends 17 constituting brush carriers for detachable high speed polishing brushes A. These brushes are secured in place on the shafts by the agency of cross pins 18 and spring-pressed ball catches 19. Centrally between the shafts 12, the main frame 10 of the machine is provided with a bearing support or stud 16 which may be integral with or detachable from the frame. This support 16 is also provided with a brush carrier means in the form of a cross pin 39 and a spring-pressed ball catch 41. When it is desired to use the machine for applying and spreading wax or for floor scrubbing the high peripheral speed brushes A are removed and a detachable brush B, Fig. 2, rotatably secured to the stud 16. A detachable pinion 43 having teeth 42 is also secured to one of the shaft ends 17. This pinion meshes with annular teeth 34 formed on the inside of a rim 33 on the back of the brush. This brush owing to the gear reduction and its large diameter will have a slow peripheral speed to prevent flinging of cleaning material over furniture. Intermediate brush peripheral speeds may be obtained by using three smaller diameter brushes as shown in Fig. 3. In this case one of the brushes C secured on the shaft 12 is provided around its periphery with a friction driving band or tyre 61 of rubber or other suitable material. This tyre engages a tyre 51 provided around the periphery of a brush D secured for rotation on the central brush carrier. Owing to the small diameters of the brushes C and D the brush peripheral speeds will be low. The peripheral speed of the brush D is independent of the diameter of the brush since it is driven by the tyre 61. Any desired peripheral brush speed may be obtained by using brushes of varying diameters. If the diameters of the brushes C are increased the diameter of brush D will be decreased and vice versa. Specification 677,475 is referred to.
Patent GB-331156-A (GB)
Title: Improvements in tie clamps for the wall tubes of furnaces
IPC: F23M5/08
Filed: 1929-10-12
Abstract: 331,156. Babcock & Wilcox, Ltd., (Fuller Lehigh Co.). Oct. 12, 1929. Walls.-Clamps 9 by which refractory tiles 6 are secured to the tubes of a furnace wall have flanged ends 13 by which they are secured together and the lengths of the clamps-flange face to flange face-correspond accurately with the desired spacing of the tubes. Strengthening ribs 15 may be provided.
Patent GB-215679-A (GB)
Title: Improvements in and relating to electro-magnets
IPC: H01H50/16
Filed: 1923-12-10
Abstract: 215,679. Tyer & Co., Ltd., and Leake, F. W. Dec. 10, 1923. Electromagnets.-A tubular casing A is closed at one end a and diametrically opposite poles are formed at the open end to co-operate with an armature G carried by a core B which is rotatably mounted on a pivot E at the closed end' of the casing and in a non-magnetic bar F at the open end. The armature is shaped as shown to maintain an approximately constant attractive force throughout its range of movement, which may be limited by stops l, m. The core may carry an index H, or a railway signal, or a locking-dise &c.
Patent GB-656912-A (GB)
Title: Improvements in or relating to non-skid devices for vehicle wheels
IPC: B60C27/08
Filed: 1949-11-26
Abstract: 656,912. Tyre gaiters. RICH, C. G. Nov. 26, 1949, No. 31121/48. [Class 144 (ii)] A flexible tyre gaiter having headed groundengaging studs 21 secured to its tread portion 20 by their heads 22 conforms with the tyre periphery and has at least one radially arranged slot 25 extending outwardly along its flanks and transversely across its tread portion to divide the latter and provide for a degree of longitudinal flexibility. As shown, the gaiter comprises three spaced, arcuate, laminated sections 14, 15, 16, the flanks 24 of which are joined together by gusset plates 17 and extend to lie centrally between the tyre tread 11a and the wheel rim 12. The inner and outer laminations 23, 18, which may be sponge rubber and sheet spring steel respectively, are stuck together and eyelets 26 are provided in the flanks 24 of the end sections 14, 16 to receive securing straps 27, the studs 21 being conical and secured to the outer lamination 18.
Patent GB-464910-A (GB)
Title: Improvements in or relating to sound-scanning rollers for sound film apparatus
IPC: G11B7/00
Filed: 1936-11-16
Abstract: 464,910. Optical soundreproducing apparatus. BAUER GES., E. Nov. 16, 1936, No. 31235. Convention date, Nov. 16, 1935. [Class 40 (ii)] Relates to optical sound-reproducing apparatus in which the photo-electric cell is arranged within a roller at the exposure point and consists in providing the roller with at least one opening in its front wall, the cell being secured within the roller by a locking device on release of which the cell is automatically ejected through the opening. As shown in Fig. 2, the roller comprises two parts 1, 2 mounted on a common rotating shaft 3, a sheet-metal strip 4 carried by a fixed holder 51 being located between the parts. The film bears on guides 5, 6, the strip having an opening 7 through which the modulated light can fall on the photo-electric cell 8. This cell is situated in a casing 9 which carries an insulated contact 10 adapted to press against a spring contact 11 when the cell casing is inserted in the roller. The cell and its casing are secured within a guide sleeve 16 in the roller by a bayonet slot connection 17, 18, the arrangement being such that, on release of the casing from the sleeve, the former is ejected through one of the openings 14, 15 in the front wall of the roller by the spring 11. Fig. 4 shows a modification in which the sleeve 23 has a long slot 24 in which a pin 26 on the cell casing 25 is adapted to engage, the pin snapping under the free end of one arm 27 of a twoarmed spring-controlled pivoted lever 27, 271. The arm 27<1> is adapted to be raised by the conical portion 30 of a push knob 31 so as to release the pin 26 and allow the cell and its casing to be ejected through one of the openings 33, 34 by the contact spring 35.
Patent GB-140998-A (GB)
Title: Improvements in grease cups
IPC: F16N11/04
Filed: 1919-12-13
Abstract: 140,998. Williamson, S. S. Dec. 13, 1919. Grease cups.-The screwed cap of a grease cup has a partition 4 forming an upper compartment which contains .a spring-pressed piston 6. When the cap is screwed on to the body 2 of the cup, grease is forced through a hole 5 in the partition and raises the piston compressing the spring 9. The grease is then slowly fed back by the piston and passes to the bearing to be lubricated. The stem 7 of the piston is rectangular, and its upper end is notched at 8 and twisted to form a stop limiting its movement. The projecting stem serves to indicate the action of the device.
Patent GB-1031773-A (GB)
Title: Improvements relating to electric switches
Inventor: POWSEY ERIC
IPC: H01H13/18
Filed: 1962-08-15
Abstract: 1,031,773. Stamping. LINREAD Ltd. Aug. 1, 1963 [Aug. 15, 1962], No. 31283/62. Heading B3Q. [Also in Division H2] A tubular body 1 for an electric switch (see Division H2) has a mounting plate 3 secured thereon by integral bulges in the tube 1 formed by compression in a die plate Al by a ram B2. The plate 3 is positioned by resting on posts C3. Ram B2 first causes the end of the tube to be tapered and then produces the bulges 6, pins A5 and B1 preventing inward collapse. The spring C4 yields during the latter stage and upon lifting of ram B2 partially ejects the switch body 1 with attached flange 3 from die cavity A2.
Patent GB-789569-A (GB)
Title: Method and apparatus for feeding an untwisted, multifilament strand
Inventor: SLAYTER GAMES
IPC: C03B37/03
Filed: 1955-11-02
Abstract: 789,569. Glass fibres. OWENS-CORNING FIBERGLAS CORPORATION. Nov. 2, 1955 No. 31397/55. Class 56. In the forming and collecting of strands of glass fibres, to prevent the strands from licking on the attenuating device means are provided to establish differential pressure zones on opposite sides of the strands alternatively whilst they are in the attenuating device and/or just after they leave it. Several forms of these means are described. In Fig. 1, for example, air under pressure is supplied through the hollow shafts 29 and radial passages 41 through the attenuating wheels 28, the passages being out of phase. In another form, Fig. 9, the rims 81 of the attenuating wheels are slotted at 82 to form " flippers " 83 ; these flippers may be operated out of phase. In other forms the peripheries of the attenuating wheels are formed with alternating ridges and grooves and may be of wave form. Specifications 704,573 and 739,245 are referred to.
Patent GB-485295-A (GB)
Title: Coin-freed apparatus for controlling the extent of use, or availability for use, of machines
IPC: G07F5/10
Filed: 1936-11-17
Abstract: 485,295. Hiring slicing and other machines; collecting hire - purchase payments. FITZPATRICK, H. D. (Maatschappij van Berkel's Patent N.V.) Nov. 17, 1936, No. 31416. [Class 27] A coin-freed apparatus for controlling the extent of use or availability for use of machines and intended particularly for slicing, sewing, and washing machines and vacuum cleaning apparatus, to collect the hire-purchase payments therefor, comprises, in the application to a slicing machine, a pair of dog-toothed clutch members 12, 13, Figs. 1 and 2, the member 12 being cam shaped and connected to the hand operated fly-wheel 10 while the member 13 is slidable on the driving shaft 11 of the machine. At each revolution of the fly-wheel 10 the cam 12 rocks a spring-controlled bellcrank lever 14, a rod 19 from which actuates a revolution counter 18 constituted by a multi-stage reduction gear. After a predetermined number of revolutions, a pin 31 on the slow speed end of the counter actuates a trigger 30 which is released from a projection 28 on a member 27 pivoted at 27a to an arm 25, allowing this member to drop and interpose a second projection 29 thereon between a projection 14a on the bell-crank lever 14 and the arm 25 pivoted at 24. On the next actuation of the lever 14, the member 27 is rocked by the projection 14a to rock also the arm 25, so that a notched pawl 23, integral with the arm 25, releases a spring arm 22 extending from a clutch operating fork 20. The fork 20 is pulled by a spring 38 and disengages the clutch members 12, 13 thereby disconnecting the driving connection of the machine. The machine is made available for use again by inserting a coin in a slot 32 and pressing in a plunger 34. The clutch 12, 13 may be provided to lock, when the machine is not in use, the driving shaft 11. The revolution counter 18 may be driven by a clockwork mechanism so that the machine is rendered available for an interval of time. If the machine is driven by an electric motor, a switch can be provided to cut off the supply to the motor, when the machine is rendered inoperable. Coin action, mechanical - connection.-The inserted coin drops to rest between a fixed abutment 33 and the spring arm 22. The end 35 of the plunger 34 pushes the coin to a money drawer 37 thereby moving the arm 22 to be re-engaged by the pawl 23, and an incline 36 resets the member 27 together with the arm 25 and pawl 23.
Patent GB-1303036-A (GB)
IPC: G08B25/08
Filed: 1970-06-29
Abstract: 1303036 Video tape recorders AKAI ELECTRIC CO Ltd 29 June 1970 [27 June 1969] 31478/70 Heading G5R A magnetic video tape recorder has two capstans 18, 16, with associated pressure rollers 19, 17, the capstans being positioned outside and on the same side of a triangle 34 having as its apices the centres of the supply and take-up reels 12, 13 and the centre of the stationary guide drum 14 within which the magnetic heads (39a, 39b, Fig. 4, not shown) rotate. The drum 14 is inclined to the tape deck 11 as in Figs. 2, 3 (not shown). The arrangement is stated to provide compactness in size, e.g. to allow the recorder to become portable, and furthermore to allow video tapes designed for use in large machines also to be used in small ones.
Patent GB-495671-A (GB)
Title: Improvements in or relating to syphon bottle heads
IPC: B67D1/04
Filed: 1937-11-16
Abstract: 495,671. Siphon-bottle heads. EKES, L. Nov. 16, 1937, No. 31529. [Class 14 (i)] A siphon head is made in one piece of rubber or like material, comprising a spout 16, valve-closing spring 7, combined safety valve and charging extension 33, outer sleeve 19 for securing the head to the bottle 18 by means of a clamp 21, and inner sleeve 17 for holding the dip tube 16. The spring 7 engages a collar 4 on the valve-operating knob 2. The safety valve comprises a chamber 25 connected to the bottle by a passage 24 and to atmosphere by a port 27, the latter being closed by a disc 26. For charging the bottle with air, a bulb pump may be fitted to the passage 28, the wall 25a of chamber 25 being shaped to prevent the disc 26 from closing the passage 24. The dip tube is a sliding fit in the extension 17, so that the pressure within the bottle, acting in the valve chamber 11, acts to force the lower end of the tube against the bottom of the bottle. The spout 16 may be formed with projections 55, Fig. 11, to produce whirling of the liquid and, in consequence, a foaming discharge. Alternatively, the spout may be fitted with a sleeve housing a dished and perforated splash plate, for the same purpose. The valve arrangement 26 may be dispensed with. In a modification, Fig. 2, a separate member 1a, having a flange 35a to engage the bottle neck, is formed with the spring 7, the inner end of the spout, and the inner sleeve 17. The safety and charging valve comprises a nipple 42 and a threaded plug 39 provided with a threaded socket 28a for attachment of a ball pump. The head is secured to the bottle by a one-part screwed ring 37 and a resilient or split ring 36. The latter has cylindrical end parts 36a of different lengths, so that its reversal enables the head to be secured to bottles of various sizes. The outer 'sleeve 19 is threaded for engagement with the ring 37, and may be reinforced by a metal liner which is inwardly flanged at its upper end. Metal caps may be provided for protecting the valve knob 2 and spout 16, and are interconnected and secured to the head by a breakable seal until the siphon bottle is taken into use.
Patent GB-1388794-A (GB)
Title: Method and apparatus for sulphating base metals
IPC: C01G1/10
Filed: 1973-07-03
Abstract: 1388794 Metal sulphates INTERNATIONAL NICKEL CO OF CANADA Ltd 3 July 1973 [5 July 1972] 31601/73 Heading C1A In a process in which a material that contains at least one base metal value that forms a water soluble sulphate is sulphated by reaction with concentrated sulphuric acid, a slurry of the finely divided material with concentrated sulphuric acid (i.e. containing at least 60% by weight of H 2 SO 4 ), is heated to 140 to 250 C. by the passage of an electric current between insoluble electrodes immersed in the slurry and the base metal sulphate is recovered by leaching the sulphated slurry with water. The material treated may be an anode slime from the electro-refining of nickel sulphide anodes containing precious metals. The base metal may be Ni, Co, Cu, Fe or zinc and Ag, Au, Pt, Pd, Os, Ru, Rh and Ir may also be present. The precious metals are recovered from the enriched back residue, which also contains liberated sulphur.
Patent GB-300399-A (GB)
Title: Improvements in or connected with concrete electricity transmission line masts
IPC: E04H12/12
Filed: 1927-11-24
Abstract: 300,399. British Insulated Cables, Ltd., and Perkins, A. E. Nov. 24. 1927. Reinforced concrete posts; posts, attachments for; connections.-A twopart concrete, or ferro-concrete, mast for carrying electric transmission lines comprises a base of straddled leg construction socketed to receive the upper mast part. In the embodiment shown in Figs. 1 and 2, the base 1 with straddled legs 2 is formed with a socket 4 in which the upper mast part 5 is fitted. Cross-trees 6, preferably of reinforced concrete, support the insulators. Each leg 2 may be formed of straddled members. The socket 4 consists of channels closed at the bottom and carried on the legs 2, Fig. 7. The mast part 5, cruciform in section, has parts 9 forming distance-pieces between the flanges 10, other projections filling the channels in the socket 4. Bolts 11 and nuts 12 lying in recesses 13 in the socket 4 hold the parts in position, the recesses 13 being filled with cement grouting to seal the metal parts. Recesses 14 in the part 4 are also grouted. A modified socket construction, for use when each leg 2 is formed of straddled members, comprises socket portions carried by each straddled member, the portions being overlapped and each portion having a recess for a fastening bolt and nut. In other modified constructions, rectangular reinforced concrete rings are fitted over the joint, metal wedges being inserted between the rings and the socket 4, or metal half-rings may be recessed in the socket part, the half-rings being overlapped and pinned together. As shown in Figs. 17 and 18, the cross-trees 6 lie in transverse recesses in the face of the mast 5, and are clamped in position by bolts and nuts 16 which are recessed in the mast and cross-trees. The recesses are then grouted with cement.
Patent GB-1036407-A (GB)
Title: Centrifugal pumps
Inventor: LAWRENCE OWEN NAPIER
IPC: F04D15/00
Filed: 1963-08-10
Abstract: 1,036,407. Centrifugal pumps. JOSEPH LUCAS (INDUSTRIES) Ltd. Aug. 7, 1964 [Aug. 10, 1963], No. 31666/63. Heading F1C. The flow through the inlet 14 of a centrifugal pump is controlled by a manually-adjustable valve 16. When the valve is only partially open, all the liquid is directed by blading 27 in the impeller eye to auxiliary impeller blading 23 which delivers it to an auxiliary outlet 24. When the valve is opened further to provide a flow greater than can be handled by the auxiliary impeller blading, liquid flows over an annular partition 21, which conveniently extends radially inwardly beyond the shroud plate 26 to form a weir, and is delivered by main impeller blading 18 to a main outlet 19. The outlets 19, 24 may be connected to a common delivery conduit, flow from the outlet 19 to the outlet 24 or vice versa being prevented by non-return valves 20, 25.
Patent GB-806223-A (GB)
Title: Diode clipping circuit
IPC: H03G11/00
Filed: 1955-11-07
Abstract: 806,223. Limiting circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 7,1955 [Nov. 10, 1954], No. 31755/55. Class 40 (6). In a circuit, Fig. 1, in which the output of an amplifier 21 is in phase with an input signal from source 1, a diode 29 is connected between a point 27 having a potential variation equal to or less than that of the input signal and the input to the amplifier. By employing a further diode 23 the output from the amplifier continues to fall with an increasingly negative input signal until diode 23 conducts whereupon diode 29 also conducts. If the amplifier has a gain of unity then the potential divider comprising resistors 25, 26 may be omitted. In a practical embodiment, Fig. 3 (not shown), a cathode follower is used and by the use of a further pair of diodes, Fig. 5 (not shown), the input signal may also be limited in a positive direction. A circuit for limiting the input in both positive and negative directions, Fig. 6, comprises a cathode follower 3 with a potential divider of resistors 66, 67 and 16. The point 17 is given such a potential that with an input signal of minus 34 volts diode 8 conducts, the output then being such that diode 14 also conducts to limit any further negative excursion. In a similar manner when a positive going signal of ten volts exists at the input, diodes 9, 15 conduct to prevent the output from rising further. The circuit may be employed to clip a large amplitude wave, Fig. 4 (not shown).
Patent GB-1308030-A (GB)
Title: Photographic exposing apparatus
IPC: G05D3/20
Filed: 1970-07-01
Abstract: 1308030 Photographic apparatus; programmed control INTERNATIONAL BUSINESS MACHINES CORP 1 July 1970 [2 July 1969] 31797/70 Headings G2A and G3N Photographic exposing apparatus includes means to move a work-table 12 transverse to the path of a light beam 2 is response to a first signal, from a computer 18, representing a desired position of the table; a comparator 19 responsive to the first signal and to a second signal, from interferometric measuring devices 15, 16, indicative of an actual position of the table to generate a third signal representing the difference between the two table positions; and a beam deflector 5 responsive to the third signal to deflect the light beam 2 thereby compensating for the difference in table position. The deflector 5 operates while the table is in motion, and the apparatus further includes means for controlling the intensity of the light beam in dependence on the speed of movement of the table 12 relative to the beam. The work-table 12, carrying a semi-conductor wafer 11, is stepped in X and/or Y co-ordinate directions by motors 13, 14 and spindles 23, 24 in response to a first signal from the computer 18. The deflector 5 comprises two series of  electro-optical deflecting stages, each series being associated with a co-ordinate direction. It is arranged that a single step effected by the motors 13, 4 is equivalent to one step of deflection produced by the deflector 5. A condenser 3 is  provided to give a collimated light beam.