baber/WOPTO huggingface dataset:
Patent GB-1360925-A (GB)
Title: Low voltage subterranean spark drill
Inventor: WOODRUFF G N
IPC: E21B7/15
Filed: 1972-05-31
Abstract: 1360925 Boring earth &c TRW Inc 31 May 1972 [7 June 1971] 25370/72 Heading E1F [Also in Division H1] A spark drill comprises electrodes 11, 12, semiconductor material 15 providing a shunt path between the electrodes, and a passage 18 discharging drilling fluid between the electrodes, the arrangement being that a spark discharge between the electrodes creates pressure waves in the fluid at the bottom of the hole being drilled to fracture the hole bottom. The electrode 12 has limbs 13 and a passage 18 is formed between each pair of limbs. AC is supplied from the surface to a circuit 21 delivering DC pulses to the electrodes. In a modification the electrode 12 is replaced by a ring of electrodes, an annulus of semiconductor material extends between the ring and the electrode 11, and a circuit connected to the surface is provided for each electrode 12 in the ring.
Patent GB-1576638-A (GB)
Title: Apparatus for extracting sheets of paper from a stack particularly on a folding machine
IPC: B65H3/10
Filed: 1977-06-17
Abstract: This device contains a rotating carrier roll (11) and a rotatable suction roll (5) which can be moved back and forth below the paper stack. The suction roll (5) which is pressed resiliently against the carrier roll (11) has suction rings (6) which are fixed in terms of rotation and freely rotatable clamping rings (12). The clamping rings (12) have a greater diameter than the suction rings (6) so that they can roll on the carrier roll and the paper sheets can be clamped between the clamping rings (12) and the carrier roll (11). This design ensures, in a mechanically simple manner, that the paper sheets are perfectly conveyed even in the case where the suction roll and carrier roll have different speeds. <IMAGE>
Patent GB-588629-A (GB)
Title: Improvements in or relating to brushes for cleaning dentures
IPC: A46B3/08
Filed: 1944-12-20
Abstract: 588,629. Brushes. RALPH, W. Dec. 20, 1944, No. 25534. [Class 19] A ring 1 is compressed around a bundle 2 of bristles. and then has corrugations or indentations 3 formed in one or two sides, whereby the bristles 2 are compressed or gripped in the ring 1. The ring may also be pierced as indicated at 4 and pins may be driven into the openings. The roots of the bristles 2 are preferably dipped or treated with an adhesive or rubber solution which is not softened by boiling water. The ring 1 is integral with or secured to a handle 6 so that they together subtend an angle greater than a right angle. Reference has been directed by the Comptroller to Specifications 13760/09, 26611/09, 11881/13, 190,430 and 267,437, [all in Class 19].
Patent GB-1510926-A (GB)
Title: Chromogenic thrombin substrates
IPC: C07K5/087
Filed: 1976-06-21
Abstract: To determine thrombin or enzymes which cleave the substrates in the same way as thrombin, the material in which the enzymes are to be determined is brought into contact with a novel substrate of the formula I <IMAGE> In the substrate, R2 is a chromogenic radical which is eliminated by enzymatic hydrolysis in the form of the corresponding amine which differs in its absorption spectrum from the substrate of the formula I so that quantitative determination of the enzyme present in the material is possible because the amount of amine which is formed is proportional to the amount of enzyme which is present. In the substrate, the substituents have the meaning stated in Claim 1, and the optionally substituted 1-amino-2-phenylpropionic acid in the peptide chain must be in the D form so that attack of aminopeptidases on the substrate, which would interfere with the determination, is prevented.
Patent GB-1459916-A (GB)
Title: Position sensor for suspended part of vehicle
IPC: G01B7/14
Filed: 1974-06-10
Abstract: 1459916 Variable resistors CIBIE PROJECTEURS 10 June 1974 [8 Aug 1973] 25672/74 Heading HIS [Also in Divisions G1 and G3] A sensor for detecting the relative positions of unsuspended and suspended parts of a vehicle comprises a slider R 2  connected to one part and adapted to be made, by an electrical actuator, E, opposed by means C urging it away, to contact an electrically resistive element R 1  connected to the other part to form a resistance variable in dependence on the relative positions. The supply terminals E - and E + are respectively connected to conductive plate Q and element R 1  mounted on the arms of parallelogram-link mounted tongs P on the vehicle body. Rod T 1  is connected by transmission system T to the unsuspended part (axle). When energized, electromagnet E attracts point A so that the arms clamp slider R 2  which contacts both Q and R 1 , so that the resistance between E 1  and Eg varies with the position of T 1 . E - may be directly connected to R 2 . In the embodiments of Figs. 2a and 2b (not shown) slider rod T 1  is directly connected to E - and spring strip (L) is attracted to electromagnet E when it is energized, connecting slider R 2  to winding R 1 . In the embodiments of Figs. 3a and 3b (not shown) slider R 2  is on a bimetal thermostatic element, (B) which is rigidly secured to a transmission element (T 2 ) and bends when energized so that R 2  contacts R 1 . Fig. 4 (not shown) is of an installation on a vehicle with two sensors, one coupled to the front axle and the other to the rear axle. The actuators are supplied via switch (I) which closes when the headlamps turn on. A comparator (F) determines the difference in voltage drops across the sensors and gives a signal denoting vehicle inclination and its motor (M) tilts the headlamps in accord. Lateral or fore and aft inclination may be sensed.
Patent GB-507996-A (GB)
Title: Improvements in and relating to the treatment of rubber
IPC: C08C19/28
Filed: 1937-09-22
Abstract: 507,996. Synthetic resinous products. R.P.R. ASSOCIATION, FARMER, E. H., and BARRETT, J. W. Sept. 22, 1937, No. 25690. [Class 2 (iii)] Products ranging from elastic, rubber-like materials through fibrous substances to brittle resins are obtained by reacting maleic anhydride with rubber in solution and maintaining the mixture at elevated temperature. Catalysts or condensing agents, e.g. benzoyl peroxide or benzoyl toluyl peroxide may be employed in amounts up to 30 per cent, ordinarily 0À5-10 per cent, of the weight of the rubber. As modification, the rubber and maleic anhydride may be heated together with a vinyl compound, e.g. styrene, vinyl acetate or alpha-methacrylic acid ester. The rubber is preferably in dilute solution in a solvent such as toluene, xylene, decalin, cyclohexane or benzene. Preferably 2-3 C5-H8 units of rubber are employed to one unit of maleic anhydride. A number of examples are given in which benzoyl peroxide is employedas catalyst with different proportions of rubber and maleic anhydride and with different solvents, viz.: xylene, toluene and benzene, the product being isolated by'precipitation with alcohol or by removal of the solvent by steam distillation. Further examples include (10) styrene and (11) vinyl acetate. Specification 507,995 is referred to.
Patent GB-1440883-A (GB)
Title: Replaceable bits for cutting tools
IPC: B23B27/04
Filed: 1974-06-10
Abstract: 1440883 Parting-off tools K ZINNER 10 June 1974 [30 Jan 1974] 25725/74 Heading B3B A cutting tool such as a parting-off tool comprises a holder 1 to which is detachably fitted a cutting insert carrying plate 2, a cutting insert 5 mounted at the forward end of the plate, an insert clamping plate 3 securable to the holder and adjustably positioned longitudinally with respect to the plate 2. The clamp 3 and plate 2 are provided with a "V"-shaped groove 11 which engages V-shaped projections 16, 17 on the top and bottom of the insert which provides lateral location of the insert, longitudinal location being provided by a backing member 6 on the clamp. Longitudinal adjustment of the clamp is permitted by interengaging serrations 7 at the end of the clamp 3 and the plate 2. The insert is also provided with an inclined surface 15 rearward of the cutting edge which forms a chip breaker or deflecting surface. To aid in chip removal during operation the insert cutting face 13 may be provided with a channel extending longitudinally from the cutting edge which weakens the transverse section of the chips, the channel may also be longitudinally concave to provide different rake angles between the cutting face 13 and the channel bottom 19.
Patent GB-356930-A (GB)
Title: Improvements in or relating to pneumatically actuated percussive tools
IPC: B25D9/14
Filed: 1930-08-29
Abstract: 356,930. Pneumatic percussive tools. REAVELL & CO., Ltd., Ranelagh Works, Ipswich, and BIRD, P. C., 3, Willingdon Road, Eastbourne. Aug. 29, 1930, No. 25835. [Class 124.] The anvil block 6 is cushioned by air from the front end of the cylinder admitted by a passage 11 to the space beneath a collar 8 on the block. A passage through the anvil block may serve the same purpose. A leakage passage 12 is provided.
Patent GB-638582-A (GB)
Title: Reel for fishing rods
IPC: A01K89/033
Filed: 1947-09-24
Abstract: 638,582. Fishing-reels. HOLM, C. J. Sept. 24, 1947, No. 25924. Convention date, March 19, 1945. [Class 48] [Also in Group XXXIV] A fishing-reel includes a check-pawl 18 and a brake lever 27 provided with brake shoes 37, 40, one of which engages the spool when the lever is moved to either side of the normal position shown in Fig. 3, wherein both brakes are disengaged and the check-pawl is operative. Movement of the lever in a clockwise direction disengages the check-pawl and causes the brake shoe 40, which is connected to the lever by a spring 39, lightly to brake the spool. Movement of the lever in an anti-clockwise direction causes the brake shoe 37, which is rigidly attached to the lever, to brake the spool according to the pressure on the lever. The strength of the check and light braking actions may be adjusted by external knobs. A spring-loaded rod lying along or inside the fishing rod and pivoted thereto may be arranged to control the brake lever. A free-wheel device permits the spool to turn freely for reeling-in the line. The spool is removably secured in its housing 1 in the manner described in Specification 612,187.
Patent GB-877733-A (GB)
Title: Heat hardenable compositions
IPC: C08K5/13
Filed: 1958-08-13
Abstract: A vulcanizate is obtained by heat-hardening a composition comprising a halogenated butyl rubber, a heavy metal oxide and a polyhydric phenol which is capable of reaction with formaldehyde in the presence of an acidic or alkaline condensation catalyst. The metal oxide may be zinc, tin or lead oxide and, of the many phenols specified, those preferred are the fusible resins obtained by reacting pentadecyl phenol with formaldehyde.  Optional ingredients specified are carbon black and stearic acid.
Patent GB-1037327-A (GB)
Title: Improvements in high pressure relief valves
Inventor: FRONICKE HERBERT HERMANN
IPC: F16K17/04
Filed: 1962-07-06
Abstract: 1,037,327. Valves. MARSHALSEA BROS. Ltd. July 8, 1963 [July 6, 1962], No. 26013/62. Heading F2V. A pressure relief valve comprises a resilient cushion 13, e.g. rubber, within a recess 14 of a holder and seated around an outlet nozzle 9 by a spring 18 which bears upon sleeve 15, slidably mounted upon nozzle 9 by a ball bearing 16. Extrusion of the rubber into the bore 12 is prevented by a poppet member 11 seated within a conical enlargement thereof. Exhaust outlets 19 and 20 are provided in sleeve 15 and adaptor B. In an alternative embodiment (Fig. 3, not shown), the nozzle 23 and an adjustable spring retaining bush 24 are screw-threaded within adaptor B and a tubular finger 26 is provided for withdrawing the sleeve 15. The poppet member 11 is mounted with the head thereof about 0.002 inch below the top surface of the nozzles 9 and 23.
Patent GB-475921-A (GB)
Title: Improvements in and relating to road vehicle bodies
IPC: B62D29/02
Filed: 1936-09-25
Abstract: 475,921. Vehicle bodies. OTTAWAY, E. C., and LONDON PASSENGER TRANSPORT BOARD. Sept. 25, 1936, No. 26031. [Class 108 (i)] In order to minimize damage to the body framework of a vehicle in the event of collision the outer panelling, or the lower part thereof, is spaced away from the body framework. As shown the body pillars 12, having channels to receive a wooden fillet 15 to which the outer panelling 16 is secured, are inswept and attached to the chassis or underframe 11 while the wooden fillet 15 is extended downwardly clear of the pillar 12 and carries the lower part of the panelling. The lower end of the fillet 15 may be connected to the chassis 11 by curved brackets 17 having panelling 18. The pillars 12 may be braced and provided with members to carry the floor 13.
Patent GB-150964-A (GB)
Title: Safety device for presses and the like
IPC: B30B1/26
Filed: 1920-09-10
Abstract: 150,964. John, F. Sept. 11, 1919, [Convention date]. Power hammers; metal-working presses.-In reciprocating presses and machines such as power hammers and shearing machines, of the type in which the die or tool is driven from a crankshaft or its equivalent mounted at an intermediate point in a lever or retaining arm adapted to yield under abnormal pressure, the pivot of the lever is made sufficiently large to surround the crankshaft and thus form a bearing-block integral with the arm. Fig. 1 shows the device adapted to a crank-operated machine, the crank-shaft 6 being eccentrically mounted in a journal 8 normally held against rotation by an arm 10 connected to a lug on the framing by an easily breakable bolt 13. Instead of the bolt, a spring may be used. Fig. 7 shows the adaptation to a double toggle press holding a rod 20 in dies 2, 3, the arms of the two journals 8 being connected by the bolt. The device may also be applied to a single toggle press and to the lower parts of the press instead of to the head.
Patent GB-776512-A (GB)
Title: Improvements in or relating to electrical apparatus employing liquid insulation
IPC: H01H33/24
Filed: 1955-09-13
Abstract: 776,512. Insulation. GENERAL ELECTRIC CO. Sept. 13, 1955 [Sept. 13, 1954], No. 26207/55. Class 36. [Also in Group XXXVII] An electrostatic shield 20 or other metal component in a switch or other apparatus having liquid insulation in a metal container 10, is provided with a continuous coating 21 of a substantially homogeneous insulating substance extending over at least the portion 22 of the surface of the shield or component lying adjacent a region of relatively high electrical stress between the shield and container, the surface portion having a relatively large minimum radius of curvature convex to the container. The coating may be a few mils. in thickness and of a material having a dielectric constant similar to that of the liquid, e.g. ethyl cellulose or phenolic resin when the liquid is a typical circuit-breaker oil. The invention is  stated to reduce the possibility of voltage 'breakdown and examples are given.
Patent GB-750124-A (GB)
Title: Improvements in or relating to apparatus for utilising the waste heat of gases having a high dew point
IPC: F22D1/02
Filed: 1951-11-08
Abstract: 750,124. Feedwater heating systems; heating steam-boilers by waste gases. CHEMIEBAU, DR. A. ZIEREN GES. Nov. 8, 1951 [Nov. 10, 1950], No. 26227/51. Classes 64(1) and 123(2). Relates to apparatus for utilising the waste heat of a multiple-hearth furnace of the type having superposed hearths and a central hollow shaft carrying rabble arms, the shaft being cooled by an air stream passing upwardly within it. According to the invention, one or more groups of boiler tubes 4 are disposed immediately adjacent to the waste-gas outlet 2 from the furnace 3 and each group is fed by a feedwater heater 6 connected to a vertical extension 7 of the central hollow shaft of the furnace, each feedwater heater being disposed on top of the furnace. Valves 10 are provided in the flue 7 and in the side-tubes 8, 9, so that the amount of heat abstracted from the air-stream may be varied. To obviate condensation around the boiler tubes 4, a double flap-valve 5 is arranged at the junction of the branch-conduit with the main flue 2, this valve being also closable to a variable extent.
Patent GB-303739-A (GB)
Title: Improvements in and relating to the hardening of the heads of railway rails
IPC: C21D9/04
Filed: 1928-09-13
Abstract: 303,739. Eisenwerk-Ges. Maximillanshiitte. Jan. 7,1928, [Convention date]. Tempering.-In a device for hardening the heads of railway rails, a number of rails 7 are secured by hydraulically-controlled tongs 2 in saddles on an arm 1 integral with a toothed segment mounted on a shaft 3, a stop member 5 supporting the arm 1 in such a position that the heads of the rails are simultaneously immersed in liquid in troughs 6. When the rails have been cooled sufficiently the arm 1 is rotated through 180‹, the tongs 2 released, and the rails conveyed to the rolling-machine. Instead of axial rotation the common supporting arm for the tongs may be raised, moved laterally, and lowered to the troughs by a crane, in which case the rails are placed in the tongs head downwards. The troughs may also be moved if necessary.
Patent GB-616445-A (GB)
Title: Improvements relating to locomotive and like steam boilers
IPC: F22B13/14
Filed: 1946-09-02
Abstract: 616,445. Water chambers in steam boiler fireboxes. BULLEID, O. V. Sept. 2, 1946, No. 26402. [Class 123(ii)] In a locomotive boiler comprising a barrel 3 and a firebox 1, the roof of the latter is constituted by a plurality of steam and water drums e.g. a large diameter central drum 14 and a pair of smaller side drums 15, these drums extending longitudinally from the barrel so as to be spaced apart across the width of the firebox and each being connected to the lower rear end of the barrel 3 by flat water chambers or siphons 4, a common transverse header 16, to which a feedwater supply pipe 18 may be connected, and two short vertical ducts 17. Each chamber 4 tapers downwardly and opens at its downwardly and forwardly swept lower edge into a tubular duct 5 jointed to the header 16, and the firebox may be fitted with a firebrick wall 20 which extends from the fire-grate support to the ducts 5 and is continued as a rearwardly and upwardly sloping partition or arch 21. The boiler is of welded construction throughout, with the drums 14, 15 reinforced by longitudinal stay rods 19. In a modification a single steam-and-water chamber extends over the entire roof of the firebox, and the ducts 5 of the transversely-spaced chambers or siphons communicate directly with the bottom of the barrel 3 at points spaced longitudinally and circumferentially of the latter.
Patent GB-264488-A (GB)
Abstract: 264,488. Mabille, E. Jan, 12, 1926, [Convention date]. Cash registers with items-printing mechanism; printing totals.- A series of items entered in the machine, is printed on a recordstrip and voucher-strip by means of a rising and falling platen and the total may be printed after first rocking the platen to shift it from beneath the. item typewheels to below the totalizer type-wheels. The differential-actuating wheel 49 continuously meshes with the item-printing wheel 2 and, on the forward stroke only with the pointing totalizer wheel 4, mounted in a rocking lever 5 and thrown in and out by a cam 10. The two strips 36, 42, Fig. 3, pa.ss between the printing- wheels and a platen 31 pivoted at 32 on a vertically reciprocated bar 33. The platen carries the record-strip and ink-ribbon spools and is rocked for printing the total by thrusting in a key 44. The ink-ribbon 38 is guided so as to run between the two strips and above the upper strip. Transfer-mechanims. - The transfer pawl 20, Fig. 1, is pivoted on a bar 11 and is normally held up by a trip pawl 22. At transfer the latter is displaced to free the transfer pawl and subsequently an arm 16 forces the bar to the right to effect transfer, the bar first being lowered by cam 29 and lever 27 to bring the pawl into engagement. As the bar returns under the action of spring 18 the transfer pawl is raised by wiping over the teeth of wheel 8 and is then held again by the trip pawl.
Patent GB-273133-A (GB)
Title: Improvements in variable speed ratchet gearing
IPC: F16H29/04
Filed: 1926-10-22
Abstract: 273,133. Tumanov, M., and Tumanov, S. Oct. 22, 1926. Variable-speed ratchet gearing comprises a driving-shaft 3, a driven shaft 4, and a countershaft 29, the two latter shafts being geared together to render the ratchets double-acting. The driving- shaft 3 carries eccentrically an eccentric 8 the turning of which in its socket varies the throw of the combined device, and thus the speed transmitted. The eccentric strap 17 is constrained to have a wabbling motion without turning by pins 18 engaging a slit 19 in a reciprocating slider 20. There is a system of links 23, 25 and oppositely acting ratchets 27, 28 connected by a toothed pair 30 which effects that the shaft 4 is driven both on the forward and on the backward stroke of the strap 17. The motion may be rendered uniform by suitably curving the cam slot 19. Speed is controlled by sliding longitudinally a barrel 12 with oppositely-pitched spiral grooves engaging the shaft 3 and the eccentric 8, such sliding being effected by suitable means 10. A tail shaft 6 may be driven in two directions by sliding upon the feathered shaft 4 a pair of bevel gears 5<1>, which engage a gear 5 alternatively.
Patent GB-1493813-A (GB)
Title: Electro optical device and method
IPC: G03G5/024
Filed: 1974-06-14
Abstract: 1493813 Electroluminescence SHARP KK 14 June 1974 [15 June 1973 (2)] 26486/74 Heading C4S Electroluminescent apparatus for storing and reproducing an image comprises luminescent layer I between dielectric films 2, 3 and electrodes 4, 5, means for creating a polarization pattern by the application of light and of a D.C. bias of level less than the threshold level for initiating electroluminescence so as to create a charge polarization pattern about the interfaces between layer 1 and films 2, 3, and means for electrically energizing the EL element to subsequently reproduce an electroluminescent image corresponding to the charge pattern. In two alternative methods of storing and reproducing, either a light image applied simultaneously with the D.C. bias produces a light pattern (Fig. 2, not shown), and readout is by subsequent application of at least one voltage pulse, or uniform intensity light is applied during the bias period, a light pattern applied after removal of the bias to provide an image by depolarization (Fig. 8, not shown), and readout by the application of at least one voltage pulse. The bias may be D.C. or D.C. with A.C. A read pulse of opposite polarity to the write pulse produces a positive image of stronger emission than a read pulse of the same polarity producing a negative image (Figs. 4, 5, not shown), the same characteristics applying to D.C. offset pulses (Figs. 6a, 6d, not shown). In the second mode, opposite and same polarity read-out pulses produce negative and positive images respectively. A part of a latent image may be altered by applying light to a selected region to reduce the polarization. The luminescent layer may be ZnS doped with transition metal elements such as Mn or Cr, or rare earths such as Tb, Er, Tm, Yb, the dielectric layers of Y 2 O 3 , and the electrodes of SnO 2  and Al respectively.