baber/WOPTO huggingface dataset:
Patent GB-439896-A (GB)
Title: Improvements relating to apparatus for the control dependent upon load, of the speed of an electromotor, supplied through grid controlled current rectifiers
IPC: H02P7/26
Filed: 1934-06-29
Abstract: 439,896. Control of D.C. motors. SIEMENS - SCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. June 29, 1934, No. 19289. Convention date, Sept. 27, 1933. [Class 38 (iii)] A motor is supplied through a grid-controlled discharge device, and means are provided operable in response to load variations of the motor in at least the range of light load over which variations of motor load produce relatively large variations of speed, to regulate the discharge device and modify the natural speed-torque characteristic in the sense of a reduction of speed. The motor 6 receives current through a grid-controlled discharge device 1 and returns current under regenerative braking conditions through a grid-controlled discharge device 2. The grids of these discharge devices are under the control of apparatus 7 adjusted by a lever 8, and a control device 10, responsive to the motor current, effects an additional adjustment of the apparatus 7. The device 10 may comprise a fixed coil carrying the motor current, and a movable coil excited from an auxiliary source. The movable element 15, Fig. 3, of the device 10 may adjust a lever 16 against the bias of springs 17, the casing of the device shown in Fig. 3 being rigidly connected with the lever 8, Fig. 1, and the lever 16 being coupled to the grid control apparatus. Additional biassing springs 18 may be provided for the lever 16 which are effective only for deflections exceeding a certain amount, so that the adjustment of the grid control apparatus in accordance with load may be effected also in the higher ranges of load, but to a different degree. In a modification the loadresponsive instrument is coupled to the third member of a differential gear by means of which the operating lever is connected to the grid control apparatus. Alternatively the load-responsive device may adjust a grid phaseshifting transformer, a resistance for controlling the saturation of choking coils in the grid circuit, or a mechanical contact device through which the grid is supplied. In a further modification an auxiliary generator, excited in accordance with the motor current, supplies the field of a further auxiliary generator which supplies a saturating coil of a reactance connected in the grid circuit of the discharge devices, the saturation of the further auxiliary generator being so adjusted that the bend of the magnetization curve is reached at the limit of the lower range of motor loads. For regenerative conditions the load responsive device is arranged to modify the natural speed-torque characteristic in the sense of an increase of speed for the range of light loads. The nature of the modification of the natural torque-speed characteristic, effected by the load responsive device, is explained in the Specification with reference to Fig. 2, (not shown).
Patent GB-332036-A (GB)
Title: Improvements in and relating to screw piles
IPC: E02D7/22
Filed: 1929-06-24
Abstract: 332,036. Braithwaite &. Co. Engineers, Ltd., and Radice, W. A. June 24,1929. Sinking piles by jetting. -Screw-head piles are driven by a screwing-key which has a central bore adapted to form the discharge-pipe of an air-lift system for removing the debris in the bore-hole. Fig. 3 shows a pile screwhead 1 with a central bore 2 into which is fitted a tubular screwing-key 3 with a central bore 4. The parts 2, 3 are engaged together by means of flats 5. The screw-head also is connected to a sheath 6, which serves as a lining for the bore-hole. Compressed air is supplied by a pipe 7 to a perforated casing 9 forming with the bore 4 an annulus 8. To stir up the sediment displaced by the screw, and to disperse it through the water so that it may be raised by the air lift, a water pipe 14 is passed through the bore 4; by using pipes 14 of various diameters, the speed of the upflow in the bore 4 may be varied. In modifications, either the bore 4 or the casing 9 may be uniform in diameter at the parts where they are adjacent.
Patent GB-1269401-A (GB)
Title: Improvements in and relating to conveyor apparatus
Inventor: ZEPHINIE GERARD
IPC: A62B1/20
Filed: 1969-04-16
Abstract: 1,269,401. Rescue shoots. G. ZEPHINIE. 16 April, 1969 [17 April, 1968], No. 19419/69. Heading B7J. [Also in Division B8] An escape shoot 10 is resilient in the circumferential direction and inextensible longitudinally so that a person descending the shoot distends it and is retarded thereby. Various methods of constructing the shoot are described.
Patent GB-1501257-A (GB)
Title: Arrangement for the operation of automatic central buffer-couplings of railway vehicles
IPC: B61G7/00
Filed: 1975-05-08
Abstract: 1501257 Operating automatic central buffer couplings GERMANY MINISTRY OF TRANSPORT 8 May 1975 [8 July 1974] 19457/75 Heading B7T Apparatus for operating the lock of an automatic central buffer coupling head 4 comprises a telescopic shaft 2 having one end connected through a universal joint 3 with the lock, and the other end rotatably mounted on a bracket 5 and provided with an operating lever 6, the apparatus further comprising a locking lever 7 pivotally mounted by a bearing 12 on the bracket 5, the operating lever 6 and the locking lever 7 being movable to positions (shown by full lines in Fig. 2) in which the lock is held ready for coupling and in which a portion 13 of the locking lever engages in a recess 10 of the shaft 2, the locking lever 7 being movable to a further position (shown by dot-dash lines in Fig. 2) to allow the shaft 2 to be turned to release the lock, and the locking lever 7 being movable to a still further position (not shown) in which it rests against a stop surface 11 of the bracket 5 and, by engagement of a flat surface 8 of the locking lever with a lug 9 of the shaft 2, holds the shaft in a position in which the lock is inoperative, for use in, e.g., shunting operations.
Patent GB-357634-A (GB)
Title: Improvements in or relating to electrical key switching devices
IPC: H01H21/50
Filed: 1930-06-26
Abstract: 357,634. Snap-action switches. POLLAK, J. E., 20, Holborn, London.- (Associated Telephone & Telegraph Co. ; 1033, West Van Buren Street, Chicago, U.S.A.) June 26, 1930, No. 19492. [Class 38 (v).] In a switching key for controlling electrical circuits, such as in telephone systems, the key frame on which the contact spring - sets are mounted is composed of two independent and identical halves. The two frame parts are L- shaped stampings 1, 2 having shorter horizontal limbs 3, 4 provided with holes 24, 25 for mounting p u r - poses. The lower ends of the members 1, 2 are locked together by means of sheared tongues 9, 10 and the upper ends by screws 11. A bearing bush 14 for an operating member 8 is clamped between the upper ends of the parts 1, 2 and clearance slots are provided for the passage of the operating member and rollers 15 which engage spring extensions 19, 20, of spring-sets 6, 7 mounted in the members 1, 2. A spring-controlled plunger 21 having a V-shaped end, slides in recess between the frame members, and co-operates with a notch on the operating member 8 to hold the key in its central position. A handle 26 is screwed on to the member 8 and a washer 28 is provided so that the handle is free to rotate. A slotted escutcheon plate 5 is held in position by bolts passing through the holes 24, 25.
Patent GB-596618-A (GB)
Title: Catalytic cracking process
IPC: C10G11/18
Filed: 1945-07-30
Abstract: <PICT:0596618/III/1> Products rich in olefins are obtained by preheating a hydrocarbon oil to between 700 DEG  and 825 DEG F., and then cracking it above 1,022 DEG F. by mixing it with a finely-divided solid which has been heated to at least 90 DEG F. above the cracking temperature and which comprises a cracking catalyst and an inert mineral, the proportion of inert mineral being such that the depth of cracking does not exceed 70 per cent., the time of contact between the hydrocarbons and the solid corresponding to a weight hourly space velocity of at least 6.  A hydrocarbon oil, boiling above 311 DEG F., is preheated in heater 4 and then heated to 1,230 DEG F. by addition, through standpipe 6 of an aerial suspension of regeneration catalyst mixture (60 per cent. synthetic silica-alumina-zirconia catalyst + 40 per cent. powdered silica) at 1,250 DEG F.  The mixture of oil vapours and catalyst is passed through reactor 8 at an effective weight hourly space velocity of about 8.  A depth of cracking of 65 per cent. is obtained and the products are separated in fractionator 10.  Contaminated catalyst is continuously withdrawn from reactor 8 through standpipe 19, picked up by a steam of partially spent regeneration gas and carried via line 20 to regenerator 21, maintained between 1,000 DEG  and 1,100F., where part of the carbonaceous deposit is removed.  The partially regenerated catalyst is withdrawn through standpipe 22 and carried, in line 24, by a stream of undiluted air into regenerator 25 where the regeneration is completed at 1,250 DEG F.  The partially spent regeneration gas from regenerator 25 is passed to regenerator 21 into which undiluted air may also be introduced, via line 26.
Patent GB-1292074-A (GB)
Title: Curable amorphous terpolymers
IPC: C08F4/00
Filed: 1970-04-23
Abstract: 1292074 Olefinic terpolymers SNAM PROGETTI SpA 23 April 1970 [23 April 1969] 19652/70 Heading C3P Curable, amorphous, olefinic terpolymers of ethylene, propylene and a polyenic hydrocarbon containing at least one ring bridged by an endomethylene group, and substituted on the ring an acyclic alkadiene group in which one double bond is in the main chain and the other in a side chain. The termonomer preferably has the formula wherein A is a group containing at least one ring bridged by an endomethylene group; each of R 1 -R 4 , which can be the same or different, is hydrogen or C 1-8  alkyl; and n is 0 or an integer from 1 to 8. The copolymers are prepared by copolymerizing in the presence of a compound of a transition metal of Groups IV to VIII and an aluminium compound of the formula AlR<SP>1</SP>X<SP>1</SP>X<SP>2</SP>.mZ, wherein R<SP>1</SP> is hydrogen or a C 1-10  alkyl; each of X<SP>1</SP> and X<SP>2</SP>, which can be the same or different, is hydrogen, halogen, a C 1-10  alkyl or a secondary amine; Z is a Lewis base; and m is 0 or an integer from 1 to 2. In the examples copolymers of ethylene, propylene and, as a termonomer, (2-norborn-5-enyl)-[3<SP>1</SP>- pentadien (1<SP>1</SP>,4<SP>1</SP>) - yl] - methane, (2 - norborn-5- enyl) - [3<SP>1</SP> - pentadien (1<SP>1</SP>,4<SP>1</SP>) - yl - 2<SP>1 </SP>- methyl]- methane, (2 - norborn - 5 - enyl) - [3<SP>1</SP> - pentadien (1<SP>1</SP>,4<SP>1</SP>) - yl - (2<SP>1</SP>,4<SP>1</SP>) - dimethyl] - methane, 1<SP>11</SP>-(2 - norborn - 5 - enyl) - 3<SP>11</SP> - [3<SP>1</SP> - pentadien (1<SP>1</SP>,4<SP>1</SP>) - yl] - propane and (2 - norborn-5-enyl)- divinyl-methane are prepared using, as catalyst (C 2 H 5 ) 2 AlCl and V(Ac.Ac) 3 , VO(OButyl) 3  or VCl 4 .
Patent GB-978225-A (GB)
Title: Optical viewfinder, and photographic or cinematographic camera comprising the latter
IPC: G03B13/02
Filed: 1962-05-22
Abstract: 978,225. Photographic cameras. AGFA A.G. May 22,1962 [May 26,1961], No. 19708/62. Heading G2A. An optical viewfinder for a camera includes an indicator movable transversely of the viewing beam by means external to the viewfinder, the indicator operating behind a diaphragm and an auxiliary lens such that the latter together with the viewfinder eyepiece forms a sharp image of the indicator in part of the field of view. As shown in Fig. 1, the indicator comprises a red portion 7a and a green portion 7b behind a diaphragm 5, and an auxiliary lens 4 forms a sharp image of the indicator when viewed in the eyepiece 3. The indicator is mounted on a spring 6 and is movable by a pin 8 connected to an exposure value setting device in the camera, such that the red portion 7a is visible in the finder when illumination is insufficient for exposure. In another embodiment, the indicator and diaphragm are mounted in front of the objective 2 and the auxiliary lens 4 is formed integrally with that objective.
Patent GB-396448-A (GB)
Title: Improvements in or relating to display or advertising signs, tablets or the like
IPC: G09F7/02
Filed: 1933-01-04
Abstract: 396,448. Signs. MATTHEWS, A. G., 10, Bournevale Road, Streatham, and WRIGHT, A. G., 84, Grove Park Terrace, Chiswick, both in London. Jan. 4, 1933, No. 197/32. [Class 3 (ii).] A sign of the kind wherein individual letters, figures, &c. are held by pressure between a backing and a transparent front sheet comprises a back board 8 and a plurality of contiguous glass sheets 9 which cover the board and are clamped thereto by nuts and bolts 7, 3 so as to secure the letters 5 &c. in position.
Patent GB-443874-A (GB)
Title: Improvements in or relating to electric cables having corrugated aluminium sheaths
IPC: H01B9/02
Filed: 1935-07-10
Abstract: 443,874. Cables. JORDAN, K., 8, M³nchener Strasse, Berlin. July 10, 1935, No. 19746. Convention date, July 10, 1934. Addition to 399,066. [Class 36] To prevent damage to the outer layers of insulation in an impregnated paper insulated cable having a corrugated aluminium sheath of the kind described in the parent Specification, a layer of compressible material which has been rendered conductive is arranged between the insulation and the sheath. The layer may consist of a fabric of paper strings, or linen or silk threads and may be rendered conductive by impregnation with a suspension of aluminium powder in varnish, or by wrapping the individual strings or threads of the fabric with fine aluminium strip.
Patent GB-459540-A (GB)
Title: Improvements in and relating to the refining of natural waxes
IPC: C11B11/00
Filed: 1935-07-10
Abstract: Crude natural waxes are refined and may be fractionated by short-path high-vacuum distillation.  For example, crude flax wax is distilled under a vacuum of 10<--4>--10<--5> mm. mercury with the evaporating and condensing surfaces 1 cm. apart, fractions being taken with the evaporating surface at 100, 160, 210--220 and 230--240 DEG  C.  In other examples, carnauba wax, candelilla wax and Japan wax are treated.
Patent GB-1144502-A (GB)
Title: Improvements in or relating to hydraulically operated gripping device for the transposition of bulk goods, stacked in unbound stacks, for example building bricks
IPC: B66C1/44
Filed: 1966-05-05
Abstract: 1,144,502. Grippers for lifting stacks of bricks and other articles. A. T. VAN HUET. 5 May, 1966 [6 May, 1965] No. 19861/66. Heading B8H. The bottom layer of a single row of stacked bricks is gripped at each side by one of a pair of self-aligning thrust pads 6 actuated by an hydraulic cylinder 9 whereby to clamp the bottom layer and support the bricks stacked thereon before the stack is lifted. The thrust pads 6 are interconnected by an endless chain 24 to ensure symmetrical gripping and are each attached to a slider 7 mounted on the ends of the piston rods 8 of the hydraulic cylinder 9 mounted on the lower girder 10 of the gripper framework. Side frames 35 are mounted on the thrust pads 6 to move therewith and each has an upper arm 36 hooked over the upper girder 37 of the gripper to prevent rotation of the thrust pads in the forward direction. The hydraulic cylinder 9 is controlled by a control rod 16 rotatable to actuate switch 14 to start a motor 12 driving a pump 13 and to control a control valve 19 to regulate the flow of fluid to the hydraulic cylinder, the motor, pump, control valve, &c. all being mounted on the gripper framework. The gripper is lifted by means not shown attached to a pulley 2 in turn mounted on a block 3. The block mounts a roller 4 for movement in an upwardly inclined trackway 5 whereby the gripper will assume a backward inclination when lifted. The extent of the travel of the roller is governed by an adjustable screw 38. The block 3 also mounts a chain 27 attached at the other end to the gripper framework and running around a sprocket 28. The sprocket spindle 30 has attached at each end thereof a spring 31 attached at their other end to the gripper framework to maintain the same in an upright condition when unloaded. The spindle 30 also carries a wedge shaped plate 33 to engage a plate 34, attached to the control rod 16, when the gripper is lifted and prevent rotation of the rod, and hence actuation of the thrust pads.
Patent GB-147929-A (GB)
Title: Improved packing case construction
IPC: B65D43/00
Filed: 1920-07-09
Abstract: 147,929. McLean, R. C. July 9, 1919, [Convention date]. Tampering with, preventing and detecting; battens, strengthening.-In order to prevent or detect tampering with a packing-case battens 1 - - 4 are fixed externally around the ends 7 of the case to form closing caps therefor, and the battens 1, 2 project beyond the sides and ends of the case so as to enclose the ends of the lid 6 which is secured by metallic straps 9 passing around the case. To open the case the straps must be cut at the points c, the battens 2 being then released and allowing the lid 6 to be removed. Additional battens 13, 14 and wire straps 11 may be used. The end straps 9 may be dispensed with, in which case the lid 6 would be nailed to the edges of the other sides.
Patent GB-1280239-A (GB)
Title: Improvements in or relating to spray or mist producing means
Inventor: ANDREWS JOHN STANLEY
IPC: E21F5/02
Filed: 1970-04-25
Abstract: 1280239 Spray-producers H H ROBERTSON CO 23 April 1971 [25 April 1970] 20004/ 70 Heading B2F In an atomiser, for use in suppressing coal dust and controlling humidity, a stationary fairing 27 is located on a water inlet tube 24 and is preferably adjustable therealong to vary the width of exit slit 30. A stainless steel member 17, 18 is carried on the hub 12 of a fan having blades 14. A two-piece fairing (31, 33, Fig. 2, not shown) may be employed having three pairs of adjusting screws (35, 36). The fairing pieces may be of plastics material or copper.
Patent GB-229624-A (GB)
Title: Improvements in electrolytic apparatus
IPC: C25B9/19
Filed: 1924-08-26
Abstract: 229,624. Nordiske Fabriker De-No- Fa Aktieselskap, and Holmboe, C. F. Feb. 19, 1924, [Convention date]. No Patent granted (Sealing fee not paid). Oxygen and hydrogen, obtaining; cells; diaphragms; electrodes. - A cell 1 comprises electrodes 6, 7 of opposite polarity, the electrodes 6 being enclosed in diaphragms 8 each having one or more comparatively small openings 9 at the bottom through which the anolyte and catholyte are allowed to mix. Each diaphragm 8 is strapped by a metal hooping 11 to a bell 3 of elliptical section depending from the cover 2. The bells 3 are connected to a common channel 4. The cover 2 has downward flanges which rest on insulators 5 in grooves at the top of the cell 1, the joint being closed by an hydraulic seal. The electrolyte is renewed through a funnel 13. Gases are withdrawn through openings 16, 17. Baffle plates may be arranged over the diaphragm openings 9 to prevent mixing of the gases. To indicate the level of the electrolyte a float is provided within an open tube secured to the cover, the float being provided with an indicator passing through the cover to register on an external scale. The electrodes are connected to spindles (not shown) secured to and insulated from the cover. The electrodes may have vertical ribs.
Patent GB-449211-A (GB)
Title: Scent mixtures
IPC: C11B9/00
Filed: 1935-07-16
Abstract: A scent mixture contains hydrogenated ketones which have been primarily obtained by condensation of penta- or hexa-cyclic saturated ketones or unsaturated ketones having a single double bond with saturated aliphatic aldehydes, such condensation products including those substituted by alkyl or alkylene radicles and having at least one free methylene group adjoining the keto group.  The condensation is effected with alkali such as dilute soda lye, and the product may be hydrogenated with hydrogen in the presence of palladium. Hydrogenated ketones specified are 2-n-hexyl-, 2-n-heptyl-, and 3-methyl-5-heptyl-cyclopentanone-1, and 2-n-hexyl-cyclohexanone-1, prepared by condensing n-hexaldehyde or n-heptaldehyde with the respective cyclic ketone and hydrogenating the alkylidene ketone produced.  Specification 430,930 is referred to.ALSO:A scent mixture contains hydrogenated ketones which have been primarily obtained by condensation of penta- or hexa-cyclic saturated ketones or unsaturated ketones having a single double bond with saturated aliphatic aldehydes, such condensation products including those substituted by alkyl or alkylene radicles and having at least one free methylene group adjoining the keto group.  The condensation is effected with alkali such as dilute soda lye, and the product may be hydrogenated with hydrogen in the presence of palladium. Hydrogenated ketones specified are 2-n-hexyl-, 2-n-heptyl-, and 3-methyl-5-heptyl-cyclopentanone-1, and 2-n-hexyl-cyclohexanone-1, prepared by condensing n-hexaldehyde or n-heptaldehyde with the respective cyclic ketone and hydrogenating the alkylidene ketone produced.  Examples of scent mixtures containing the hydrogenated ketones with other perfume components are given.  Specification 430,930, [Group IV], is referred to.
Patent GB-315101-A (GB)
Title: Improvements in and relating to poultry brooders or foster-mothers
IPC: A01K31/19
Filed: 1928-07-13
Abstract: 315,101. Hurman, W. H. L. July 13, 1928. Pearing - appliances. - Covers for brooding chambers have an upwardly-widening chimney up which the hot gases pass, bounded at the top by a baffle of non-heat-conducting material having openings at its periphery, through which the hot gases pass from the chimney into the roof in close proximity with the heat radiating wall of the chimney. The heater b, which is preferably a catalytic heater, is placed in a central aperture in the platform a. The brooding chamber c, the height of which is adjustable, is covered by a heat-retaining chamber f, the floor of which c<4> has a flared central portion c
 and a depending cylindrical portion c<6> which fits tightly into the aperture in the platform a and surrounds the heater, thus preventing any hot gases from entering the brooding chamber. The chimney c' is bounded by the non-heat-conducting baffle g with ports g<1> at its periphery by which the gases and heated air pass from the chimney into the roof. A guard j is provided round the aperture a<1> to prevent the chickens from falling through when the heater is removed for refilling or other purposes.
Patent GB-177550-A (GB)
Title: Improvements in automatic guns
IPC: F41A13/12
Filed: 1918-12-11
Abstract: 177,550. Lewis, I. N. Dec. 11, 1918. Machine guns.-The breech mechanism of a gas-operated gun is actuated by a wave of compression in a column of air or elastic fluid within a chamber always in free communication with the atmosphere, the shock of compression being set up by momentarily checking the movement of the gases of discharge at the gun muzzle. The pressure impulse is followed by a partial vacuum which induces a draught of cooling air over the breech mechanism and barrel. The barrel 1 is surrounded by a casing 4 which extends rearwardly to enclose the breech-actuating rod 16 and also forwardly of the muzzle to provide a chamber 10 having a restricted opening 8 for the passage of the bullet. The restriction 8 checks or retards the forward passage of the gases of discharge which follow the bullet so that a backward reaction, exerted through an intervening column of air, is produced upon an annular piston 13 connected to the rod 16. The casing 4 is spaced from the forward end of the barrel by a distancepiece 9 having radial ribs 11. The walls of the chamber 10 may be tapered, as shown, with or without an inturned lip 8, or the walls may be cylindrical. The cooling air enters the casing through ports 40 and also through additional ports (not shown) at the extreme rear of the casing, the passage of this air over the barrel being permitted when the piston 13 is in its rear position 13<1>. Specifications 13585/08, 9579/14, and 166,580, and 166,581, [Class 119, Smallarms] are referred to.