baber/WOPTO huggingface dataset:
Patent GB-1100739-A (GB)
Title: A centrifugal pump installation
Inventor: LARSEN GUNNAR
IPC: F04D29/60
Filed: 1966-07-05
Abstract: 1,100,739. Centrifugal pumps. I. KRUGER A/S. July 5, 1966, No. 30142/66. Heading F1C. In a pumping installation each centrifugal pump 2, 3, Fig. 2, is lowered into a well 1 by a chain (23), Fig. 1 (not shown), the pump being guided by lower forked members 15, 16 and upper forked members (14) engaging guide bars 17, 18. The guide bar 17 is cranked and is rotatable by a handle (22) to move the pump substantially horizontally from an inoperative position (see pump 3) to an operative one (see pump 2) in which the pump discharge pipe 7 and a fixed delivery pipe 8 are held in sealing contact. The guide bar 17 is rotatable in excess of 180 degrees to have a selflocking action, Fig. 3 (not shown). Both guide bars 17, 18 may be cranked and rotatable individually or simultaneously in opposite or the same direction, Fig. 4 (not shown). The pump may be lowered on a single rotatable guide bar and thereafter rotated therewith to its operative position, Figs. 5 and 6 (not shown). In Fig. 7 (not shown), the pump is lowered on a pair of guide bars pivoted at their lower ends for movement in a direction lying in a vertical plane, to subsequently bring the pump into its operative position. Alternatively, only one of the guide bars is so pivoted, Fig. 8 (not shown). In the latter case arms (32, 33) extending from the pump and embracing the guide bars have suitably enlarged eyes, or the arms associated with the pivotable guide bar are forked to compensate for the variable relative arrangement of the guide bars.
Patent GB-1163257-A (GB)
Title: Constant Tension-Constant Speed Reel Drive
Inventor: JACOBY GEORGE VICTOR
IPC: B65H23/18
Filed: 1968-06-25
Abstract: 1,163,257. Control of D.C. motors. RADIO CORPORATION OF AMERICA. 25 June, 1968 [26 June, 1967], No. 30211/68. Heading H2J. [Also in Division G3] A tape transport system includes a first motor 1 providing constant mechanical power to drive the tape and a second motor 2 acting as a brake and providing a torque proportional to changes in speed of the tape so as to stabilize the speed. The drive motor 1 is a serieswound motor fed from a constant voltage source source 9; the brake motor 2 is a shunt wound motor connected across the armature 5 of the drive motor 1. The motor 2 has large armature reactance and therefore provides a braking torque which is independent of its speed (Fig. 3, not shown) but dependent on the applied voltage Vg which varies with the speed of motor 1; the system thus maintains constant speed and tension in the tape 8. The motor 2 may have an additional series field coil or the field coil may be separately energized (Figs. 5, 6, not shown) to provide suitable characteristics. Switching may be introduced to reverse the roles of the two motors (Figs. 7, 8, not shown) and thus reverse the direction of movement of the tape.
Patent GB-840950-A (GB)
Title: Linear rate generator
IPC: H02K35/02
Filed: 1958-09-22
Abstract: 840,950. Transducers. BENDIX AVIATION CORPORATION. Sept. 22, 1958 [Oct. 7, 1957], No. 30226/58. Class 40 (1). [Also in Group XXXV] The movable core of a permanent magnet linear generator passes through two groups of pick-up coils 12, 14 on a non-magnetic former 10. The core may be moved axially by a rod 36, by differential fluid pressures applied to its ends, or by the two methods in combination. The coils are spaced by T-, L- or I-section rings 16 and are retained in a housing 26 by end-rings 18, 20, 22, 24, all the rings and the housing being of magnetic material. As shown, the movable core carries the permanent magnet 30 with polepieces 32, 34, but in an alternative arrangement (Fig. 3, not shown), the magnet is situated between the stator coil groups, the core being of magnetic material, e.g. a cobalt alloy. In either case, to reduce ripple, the core may have skewed endfaces or be of such a length that when one end is opposite a ring 16 the other is midway between two. The coils may be arranged asymmetrically to produce a non-linear relationship between velocity of movement and output voltage.
Patent GB-172833-A (GB)
Title: Improved device for taking soundings at sea and in navigable waterways
IPC: G01C13/00
Filed: 1920-10-27
Abstract: 172,833. Marson, A. J. Oct. 27, 1920. Multiple-indication apparatus.-Apparatus particularly intended for ascertaining the depth of the trawl boards or spreaders of trawl nets comprises a rod A with a cross-piece A<1> to be placed over the warp B, a freely pivoted heavy plate D being mounted on an extension of the rod A; the plate D which comes to rest always in the lowest position has a concentric series of graduations d' each corresponding to definite lengths of warp and graduated in accordance with the inclination of the warp at the point where the crosspiece rests upon it, a wire E parallel to the rod A serving as index. The upper end of the rod A is bent over to form a spring hook a<4> for gripping by the hand to hold the plate D in position when the device is removed from the warp for reading the depth.
Patent GB-788859-A (GB)
Title: Improvements in and relating to electric motor control systems
Inventor: ARCHIBALD JOHN INGRAM
Filed: 1954-10-22
Abstract: 788,859. Automatic speed control systems. ENGLISH ELECTRIC CO., Ltd. Oct. 21, 1955 [Oct. 22, 1954], No. 30466/54. Class 38 (4). In a closed-loop speed control system for an induction hoist motor, the gain of the loop excluding the motor is varied inversely both with the speed reference and the static motor load torque, whereby to compensate for the non-linear characteristics of the motor and thus maintain the total loop gain and hence the fractional residual speed error substantially constant or between limits. Thus, as shown, a slip-ring induction motor 4 drives a tachometer 3 from which a speed signal # 0  is derived for comparison with a speed reference # 1  derived from a potentiometer 1, the resulting error (# 0  - # 1 ) being applied to a magnetic amplifier 5 whose output controls the electrodes of a liquid motor rotor resistance 8, through a torque motor 6 and hydraulic actuator 7, whereby the motor speed is maintained constant. In order to compensate a tendency for changes in loop gain due to the non-linear characteristics of the motor, the gain of amplifier 5 is varied inversely with the speed reference # 1  by coupling the tap on potentiometer 1 with the tapping of a negative feedback connection 12 on a potentiometer 9a supplied by the amplifier output. Further compensation is effected by increasing the negative feedback through a connection 13, and hence decreasing the gain, when the current in a relay winding 15 is sufficient to close its normally open contacts 14. This current is derived from a magnetic amplifier 16 responsive to motor acceleration through a damping transformer 17 and to motor torque through a winding 18 associated with the motor stator supply leads 19, whereby it represents the difference of the motor and the acceleration torques and hence the static load torque. Alternatively, the feedback connection 13 may be connected to a slider on resistor 10a, the slider being operated by a transductor responsive to variations in static load torque, whereby the gain of amplifier 5 is continuously varied inversely with this quantity. Again, a plurality of contacts may replace the single contacts 14 to give a stepped variation in feedback, the contacts being controlled by a single relay or a series of relays or a transductor. A stabilizing feedback for amplifier 5 is derived over a circuit 20 from a slider on a potentiometer supplied by the amplifier output, the slider being coupled to the movable electrodes of the rotor resistance 8, whereby the response time of the system is maintained within comparatively narrow limits over a wide range of rotor resistance.
Patent GB-756291-A (GB)
Title: Balancing means for garage and like doors
Inventor: DAHLMAN ERIK GEORG
IPC: E05D15/42
Filed: 1954-10-22
Abstract: 756,291. Door-operating apparatus. BROBY MEKANISKA VERKSTADS AKTIEBOLAG. Oct. 22, 1954, No. 30472/54. Class 65 (1). In a balanced overhead door installation of the kind comprising a door 1 supported at its upper end by rollers on horizontal tracks 3 and connected at its lower end to spring-influenced levers 7 mounted on fixed pivots 8, improved balancing at intermediate points when the tension of the springs 12 is varying is obtained by forming the upper arm 11 of each lever 7 with a bend or curve in the opposite direction to the movement of this arm during the opening of the door, the spring being attached to this arm by means comprising a link or links, or the like, resting on the arm in the closed position and progressively leaving the arm during opening so that the point of action of the spring moves along the lever arm. In the arrangement shown, the spring 12, adjustably anchored at 14, is attached at its upper end to a link 18 which is pivotally attached to the end of the lever arm 11 and rests on an abutment 16 or adjustable screw 17; an alternative point of connection to the arm is provided, to give the dotted position 18<SP>1</SP> of the link. In a modification, Fig. 6 (not shown), the link 18 is slotted to pivot on a bolt adjustably fixed in a slot in the lever arm 11, which is bent upwards near its end, and the link is adjustable longitudinally on the pivot bolt by a screw lying along the slot in the link and engaging the bolt. The spring acts to hold the door closed and to balance it throughout its movement.
Patent GB-304942-A (GB)
Abstract: 304,942. Krause, L. March 5, 1928. Stationary mixers with rotary stirrers. - A mortar, cement of like mixing 'and spraying device has a mixing chamber 2 disposed directly over the ejecting chamber 3 in the same container, flap valves 7 being positioned between to allow the passage of the mixed material from the mixer to the ejector 3. The material is fed into a triangular skip 13 which is then raised on an inclined hoist 19, the valve 16 of the skip automatically opening at the top of the hoist to allow the material to discharge into a hopper 22. The valve 9 of the hopper is maintained closed by the air pressure in the mixing chamber which causes the flap valves 7 to open, but on closing these flap valves the air pressure in the mixer is released thus allowing the valve 9 to open by gravity and the mixer to be recharged. The valve 9 and the flap valves 7 are closed by hand and while one batch is being ejected another batch is being mixed. The mixing paddles are rotated through gearing from a motor 15 and the material is fed for spraying through the tube 6 by a pneumatic motor 4.
Patent GB-629759-A (GB)
Title: Improvements in and relating to devices for expanding pipes and tubes
IPC: B21D39/14
Filed: 1947-11-18
Abstract: 629,759. Tube expanders. CHAMPION, A. Nov. 18, 1947, No. 30583. [Class 83 (iv)] In a tool for forming an enlargement in pipe ends, rotation of a mandrel limited by stops 15 causes a cam 12 to project a ball 7 &c. from the casing. Further rotation of the mandrel and casing effects the expansion.
Patent GB-138842-A (GB)
Title: Improvements in thrust bearings
IPC: F16C19/10
Filed: 1919-12-06
Abstract: 138,842. Martino, J. de. Dec. 6, 1919. Ball bearings.-A ball thrust bearing for use when the space is restricted, applicable for motor-vehicle differential gearing, comprises two disks 8, 9 secured by pins 6, 7 to the hub A<1> of the fixed gear case and to a rotary drum C. The disk 8 is offset at its outer part to receive balls 10<a>, a bearing ring 11, and a ball cage 10, which rotates on the cylindrical surface 8<d> of the disk 8. The disk 8 is flanged at 8<b>, 8<c> to fit over the disk 9 and enclose the bearing. In a modification, the parts 8<b>, 8<c>, 11 are omitted, the balls bearing directly on both disks, which may be formed of nickel-chrome steel.
Patent GB-446278-A (GB)
Title: Improved rubber compositions and the manufacture thereof
IPC: C08L15/02
Filed: 1934-10-25
Abstract: A process of making rubber compositions containing chlorinated rubber comprises incorporating unvulcanized rubber with chlorinated rubber previously plasticized with chlorinated paraffin wax, e.g. by means of rollers heated to 80-90 DEG  C.  Other plasticizers, e.g. tricresyl phosphate and dibutyl phthalate may also be added, but it is stated that the final product is more fire resistant when chlorinated paraffin wax alone is used.  The chlorinated paraffin wax may contain 45-50 per cent chlorine and the chlorinated rubber 65 per cent chlorine.  In order that the final product may be translucent the chlorinated rubber-chlorinated paraffin wax mix should contain at least 30 per cent and preferably 50-60 per cent of the wax.  In order that the final product may be fire-resistant it should not contain more than about 60 per cent unvulcanized rubber.  Dyes may be incorporated in the final mix.
Patent GB-139139-A (GB)
Title: Improved metal bearing
IPC: F16C33/26
Filed: 1919-12-09
Abstract: 139,139. Shimamoto, S. Dec. 9, 1919. Bushes and linings.-A bearing-surface is composed of a number of right and left handed coiled spring 1, 2 interlaced and connected by longitudinal pins 3. Babbitt-metal is fused into the ends of the cylindrical bush formed by the springs.
Patent GB-153899-A (GB)
Title: Improvements in and relating to electrically heated ovens
IPC: H05B3/02
Filed: 1920-11-02
Abstract: 153,899. Graf, F. Nov. 11, 1919, [Convention date]. Resistance ovens.-Heaters care placed below the floor of a baking- oven in one or more chambers communicating with the oven by apertures, and additional heaters c' are arranged along the side of the oven, and are controlled either simultaneously with or independently of the bottom heaters. As shown, the apertures h are at the sides of the oven. Hot air may be conducted to the top of the oven by plates i arranged in front of the lateral heaters c and cut away at the top. Several ovens may be arranged one above another, their roofs being thus heated. The invention may be applied to existing ovens formerly heated by combustion. The Specification as open to inspection under Sect. 91 (3) (a) describes also the following subject-matter :-In order to obtain uniform heating, particularly when the floor is inclined, the bottom heaters may be capable of movement to different parts of the floor. If thick, the floor forms a heat storer, so that the oven can be kept hot all day by cheap electric power taken during the night. This subject-matter does not appear in the Specification as accepted.
Patent GB-370348-A (GB)
Title: Improvements in apparatus for rotating sliver cans and for packing or tramping slivers therein
IPC: B65H54/80
Filed: 1931-11-09
Abstract: 370,348. Rotating and packing arrangements for sliver cans. BLACK, G. B., 201, Brook Street, Dundee. Nov. 9, 1931, No. 30973. [Class 120 (iii).] In apparatus for rotating sliver cans and for packing slivers therein the rotating and packing devices are carried by a continuous b a s e - forming girder 1 set into a concrete or like foundation 2. Each can 3 is carried by a turntable 6 revolving on a short vertical spindle 7 mounted on the girder 1 and carrying a worm wheel 9 driven by a worm 10 on a drive-shaft 11 supported in bearings 13 carried by substantially U-shaped brackets 12 secured to the girder 1. Each bracket 12 supports a standard 14 for the vertically-reciprocating sliver-tramping mechanism. The packing-member or tramper 18 is carried by a rail 19 supported on rods 20 guided in brackets 21 carried by the standards 14 while the shaft 11, driven from the roller 4 through a chain 15, carries a pinion 23 meshing with a spur-wheel 22 provided with a crank pin 24 connected by a chain 25 with one of a number of pulleys 27 secured on a shaft 31 and each connected by a chain 32 to a bracket 26 on one of the rods 20. The standards 14 are braced by angle-bars 30.
Patent GB-685734-A (GB)
Title: Improvements in or relating to the plating of sintered materials
Inventor: WILSON JOHN KENNETH
IPC: C25D5/34
Filed: 1950-12-20
Abstract: 685,734. Electro-deposition on sintered materials. NAPIER & SON, Ltd., D. Oct. 12, 1951 [Dec. 20, 1950], No. 30988/50. Class 41. A process for electro-plating articles formed from sintered materials, for example sintered carbides includes subjecting the surface to be plated to a blast of vapour containing a finelydivided abrasive or similar cleaning substance consisting of, or including a substantial proportion of, individual particles of a size to enter the surface interstices or recesses of the sintered material, and then subjecting the article to plating in an electro-plating bath. The surface of the article, after it has been subjected to the vapour blast, may be treated with a volatile solvent of grease and dried before it is immersed on the electro-plating bath. The article before immersion in the bath may be connected to the source of electric current, so that plating begins immediately on immersion. The vapour blast may consist of steam with sand or like abrasive in suspension. The article may be plated for a period of 30 to 50 seconds at a high current density in a bath which has a high sulphuric acid content and a low metal content, after which the article is rinsed in water, and if necessary lightly scoured and re-rinsed, and is then plated in a normal manner in a standard electro-plating bath. For nickel or cobalt plating the initial bath may contain 50 grams of the appropriate sulphate in 90 ccs. of water to which is added 100 ccs. of concentrated sulphuric acid. A wetting agent or a compound to increase the conductivity of the electrolyte may be added.
Patent GB-280943-A (GB)
Title: Improvements in weighing machines
IPC: G01G23/18
Filed: 1927-11-18
Abstract: 280,943. Maatschappij tot Vervaardiging van Snijmachines Volgens van Berkel's Patent en van Andere Werktuigen. Nov. 18, 1926, [Convention date ]. Casings; loose-weight apparatus.-In a weighing machine having a base portion with a lever system and parallel guiding mechanism for the scale pans, the base portion being surmounted by a rotatable bead containing indicating mechanism, the rotatable head is directly secured to the base portion by a separate central hollow pivot so mounted in the adjacent parts of the bead and base as to allow the passage of the connection uniting the mechanism in the head to the mechanism in the base. As shown in Fig. 1, the upright head 2 containing the indicating mechanism is rotatably mounted about a hollow pivot 8 screwed into the base portion 1 containing the lever system. Spring washers 13 of the " Belleville " type are interposed between the hollow pivot and the head. A screw 15 limits the angle of rotation of the head. A single level mounted in the upright head facilitates levelling of the machine. A link 6 connects the pendulum lever 5, spring or steelyard forming part of the indicating mechanism, with a centring " bead " 7 carried by the parallel guiding mechanism for the pan or pans. The bead 7 lies in the axis of rotation of the head 2. In a modification, Fig. 2, the bead 7 is connected to the weighbeam arm 16 by a yoke 22 and by two knife-edges 21 17 arranged at right angles to one another and bearing on an intermediate block 19. The block 19 is secured within an open-ended member 25 provided with hardened plates forming stops for the ends of the knife edges. In a further modification where connection is made between the bead and two knife-edges, one on each of two parallel arms of the weighbeam, the connecting yoke extends transversely of the two arms and is formed with two double bends supporting the knife-edges. When the machine is provided with a manipulator for changing the weighing capacity of the machine, for instance, by putting weights on the weighbeam, the manipulator carries a centring bead which is connected to the capacitynumeral mechanism within the upright head 2 by means of a rod passing through the hollow pivot 8. In a modification, Fig. 5, the capacitychanging manipulator 31 is attached to the inner race of a ball bearing 36 the outer race carrying a ball joint 37 connected by a rod 35 to the capacity indicator. The rod 35 passes through a slot 38 in the base to allow of the requisite turning of the head 2. The rod 6 connecting the base weighing-lever system with the weight indicator passes through the interior of the ball bearing. Specification 236,923 is referred to.
Patent GB-210405-A (GB)
Title: Loud speaking telephone station
IPC: H04M1/04
Filed: 1923-12-10
Abstract: 210,405. Soc. des Etablissements Gaumont. Jan. 27, 1923, [Convention date]. Lamps combined with telephone sets.-A loud-speaking telephone receiver of the kind acting without a horn, is mounted in the upper part of a lamp shade, and several small supports o, adapted to receive a microphone p or a hand set, may be arranged around the exterior of the shade.
Patent GB-191558-A (GB)
Title: Improvements in neck ties and scarves
IPC: A41D25/06
Filed: 1922-03-27
Abstract: 191,558. Wills, R. March 27, 1922. Neck-ties.-The swansdown or other lining of a tie is secured to the material of the tie by slip-stitching D, so that the stitches do not show on the outside A of the tie. The neck-band is machine-stitched. Reference has been directed by the Comptroller to Specifications 7028/15 and 140,434.
Patent GB-652026-A (GB)
Title: Improvements relating to electro-magnetic pick-ups
IPC: H04R11/08
Filed: 1948-12-01
Abstract: 652,026. Gramophone pick-ups. BRITISH THOMSON - HOUSTON CO., Ltd., and BOCOCK, W. A. Dec. 1, 1948, No. 31144. [Class 40 (iv)] In a balanced armature pick-up, a permanent magnet bar 1 has pole extensions 2, 3 secured to its ends which are shaped to provide two pairs of co-operating pole-pieces. An armature 9 is pivoted between the lower polepieces by a rubber-sheathed cross-arm 8 which carries a fixing screw 20 for a stylus 10. The upper end of the armature is centralized by a resilient strip 14 which engages a notch 15 in the armature and extensions 18 of a bracket 16 screwed to the upper pole-pieces. A further bracket (not shown), screwed to the lower polepieces, holds the armature in position and a coil (not shown) surrounding the armature is located between the two pairs of pole-pieces.
Patent GB-882797-A (GB)
Title: Method and apparatus for sampling liquid
IPC: G01N1/20
Filed: 1960-09-09
Abstract: <PICT:0882797/III/1> In an ammonium sulphate plant a saturator 8 is supplied with sulphuric acid and ammonia through pipes 9, 11 respectively, and the ammonium sulphate is discharged through a line 13 with the aid of an ejector 14 which is fed by steam or air through the line 15.  A small ejector 16 is provided which maintains a slow circulation of the liquid in the saturator through the line 17, gas-liquid separator 18, funnel 20, pipes 1, 2 receiver 22 and finally into the saturator.  The circulated liquid passes through a sampler 7 (Group XVIII) which draws a small continuous sample and passes it through the line 6 to a pH meter 21 which operates the valve 10 to vary the sulphuric acid inflow to keep the composition of liquid in the saturator 8 constant; the valve 12 in the ammonia supply line 11 can be alternatively or additionally controlled in this way.
Patent GB-245748-A (GB)
Title: Improvements in or relating to textile rolls
IPC: D01H5/74
Filed: 1925-12-10
Abstract: 245,748. Armstrong Cork Co., (Assignees of Busch, H. F.). Jan. 12, 1925, [Convention date]. Rollers.-A drawing-roller for spinning-frames has a sleeve 4 formed of artificial cork consisting of resilient compressed flattened cork granules and an elastic binder, the plane of compression being at an angle to the working surface of the roll, and a covering 3 of pliable sheet material, e.g. leather. Specification 215,303 is referred to.