baber/WOPTO huggingface dataset:
Patent GB-155812-A (GB)
Title: Improvements in and relating to the valve gear of pneumatic hammers
IPC: B25D9/16
Filed: 1920-11-05
Abstract: 155,812. Krupp Akt.-Ges., F. Dec. 23, 1919, [Convention date]. Percussive hand tools.-A percussive hammer is provided with a lift valve E of lens shape arranged in two ported blocks D, D<1> carried by an extension of the handle a<6>. The supply enters at C, and the cylinder exhaust passes through piston-controlled ports a<3>, a<4>.
Patent GB-667241-A (GB)
Title: An implement for killing fowls or small animals
IPC: A22B3/08
Filed: 1949-12-07
Abstract: 667,241. Poultry-killing implements. HUFFER, E. J. Nov. 23, 1950 [Dec. 7, 1949], No. 31372/49. Class 5(i) Hand levers, pivoted together at one end, compress the bird's neck between a loop c on the lever b and a bow d on the lever e. A stirrup g spanning the sides of the loop c may carry a spike h for severing the spinal cord. Loops may be provided on both levers.
Patent GB-873567-A (GB)
Title: Method of producing separators for electric accumulators
Inventor: WERNER DORIS
IPC: H01M50/429
Filed: 1958-10-01
Abstract: 873,567. Felted fibre battery-separators. INSTITUT FUR ZELLSTOFF UND PAPIER. Oct. 1, 1958, No. 31409/58. Class 96. Separators for electric accumulators are made by adding to a suspension of fibres, e.g. of cotton, rags, wool, linen, glass, asbestos, basalt, or artificial cellulosic or other synthetic filaments, an aqueous dispersion of synthetic rubber, or a polyvinyl or polyacrylic derivative in the presence of kaolin, talc, or blanc fixe &c., precipitation being effected at pH=4.5, using potassium-aluminium sulphate.
Patent GB-884508-A (GB)
Title: Nipple for baby nursing bottle
Inventor: WITZ HENRY W
IPC: A61J11/00
Filed: 1960-09-13
Abstract: 884,508. Teats for infants' feeding bottles. NURSMATIC CORPORATION. Sept. 13, 1960, No. 31467/60. Class 66. A teat for an infant's feeding bottle comprises a ring of teeth 15 carried on its inner wall and having intermediate spaces of corresponding shape in cross-section so that when the wall of the teat is squeezed together in feeding the teeth 15 interfit so closing off the nipple portion of the teat. A vent opening 10 in the teat flange 9 has at its upper end an annular space 13 open to the atmosphere by a space 14 between the flange 9 and the teat wall and at its lower end a slit 12 formed in a bridge portion 11. The teat is of rubber.
Patent GB-1374650-A (GB)
Title: Method and apparatus for preshaping raw logs
IPC: B27L5/02
Filed: 1972-07-05
Abstract: 1374650 Special processes TAIHEI SEISAKUSHO KK 5 July 1972 [13 July 1971 15 July 1971] 31470/72 Heading B3T [Also in Division B5]  A method of preshaping a raw log into columnar shape for economical rotary-cutting thereof, comprises the stops of detecting points at certain axial locations along each line of intersection between the log surface and longitudinal sections passing through a central axis of the log, which axis extends entirely within the log, and then cutting away the outer surface part of the log to a depth corresponding to that of the detected point along each such line which lies nearest to said central axis thereby to preshape the log into a columnar shape of substantially the same planar shape in any cross-section thereof. In apparatus described for performing the method of log 2, Fig. 14, is fed on to a log centering device 25 and its centre axis determined. Rotatable centre spindles 24 carried by a sliding carriage 23 are positioned in line with the log axis and are then urged towards each other to grip the ends of the log. The log is then transferred to a position adjacent a guide groove forming device on a bed 71. The device, Fig. 17, comprises follower rollers 74, 74a, 74b which are reciprocably supported on respective piston-rods 73, 73a, 73b of hydraulic cylinders 72, 72a, 72b so that the rollers are pressed against the surface of the log as it is rotated. A rotary cutter 79 is so arranged relative to the rollers 74; 74a; 74b that it cuts into the log a guide groove 9 the bottom surface of which is level with the portion of the log, detected by the rollers, which is nearest the log axis. If desired several groups of rollers may be provided each group controlling a cutter which forms a guide groove related to a specific section of the log length. The grooved log is then passed to a preshaping device 37, Fig. 14, where a cutter 46 is urged against the log to remove from the log all material lying outside lines parallel to the log axis and passing through tne bottom of the guide groove 9. A shown in Fig. 8 the cutter, 11, has a non-cutting portion 10 which contacts the bottom of the groove 9 whilst the cutter removes material 12. The shaped log is then passed on to a receiving bed 26, Fig. 14, before leaving the machine. The log carrying carriage may be mounted for swinging movement instead of sliding, and the guide groove forming device may include follower rollers on pivoted arm. The guide groove forming device may be combined with the preshaping device, and cutters 47, Fig. 14, may remove bark from the log before or after forming the guide groove. Limit switch detectors 14, Fig. 9, may be used instead of the follower rollers, in which case they directly control log shaping cutters 15 and the guide groove forming step is omitted.  The bark removing cutters 47 Fig. 15, comprises cutter elements 47a connected via springs 56 with a shaft 57.
Patent GB-480898-A (GB)
Title: Anti-skidding brake for motor vehicles
IPC: B60T1/14
Filed: 1936-11-18
Abstract: 480,898. Anti-skid device. MACRAE, D. Nov. 18, 1936, No. 31514. [Class 108 (ii)] An anti-skid device comprises a shoe b provided with spikes c a lever e having two lateral arms pivoted in journals on the chassis a and a hand lever d by which the device is brought into and out of operation when desired.
Patent GB-1293069-A (GB)
Title: Stop collars for piston rods
IPC: A01B21/08
Filed: 1970-06-30
Abstract: 1293069 Hydraulic rams INTERNATIONAL HARVESTER CO 30 June 1970 [7 July 1969] 31535/70 Heading F1P [Also in Division E2] A stop collar 14 for mounting on a piston rod 20 and limiting the stroke of a piston comprises a spring clip 25 having arms 26, 27 biased towards each other, and a pair of collar segments 30, 31 removably mounted on the arms and having inner surfaces 32, 33 for seating on the piston rod and seats for receiving the arms of the spring clip. The seats include lugs 34 defining apertures for receiving the arms 26, 27. As shown, the segments are provided with ears 37 for locating the arms, and, bevelled ends to form a V-notch 41 which facilitates assembly in a radial direction over the rod.
Patent GB-752184-A (GB)
Title: Device to facilitate the threading of needles
Inventor: PRETORIUS ALBERTUS
IPC: D05B87/00
Filed: 1954-11-02
Abstract: 752,184. Needle threaders. PRETOR PATENTED PRODUCTS (PROPRIETARY), Ltd. Nov. 2, 1954, No. 31592/54. Class 112. A needle-threading device comprises a body formed with a cavity containing a springy wire or strip-like member 4 having a pointed end 5 and a bifurcated end, the limbs 6 and 7 of which are resiliently biased apart. The body is formed in one side with a transverse aperture 14 which follows the course of member 4, and in the opposite side with shorter straight aperture 16 leading to the bifurcation of member 4, which, as shown, is made from a single strip bent upon itself. Thread is inserted into aperture 16 and is retained between the limbs 6 and 7 at the junction of the latter. The eyed end of a needle is then passed inwardly from one end of aperture 14, when the eye passes over the point 5. On further passage of the needle, the thread is gripped between the limbs 6 and 7, and also passes through the eye, the thread being released from the limbs when the latter are drawn together by continued passage of the needle. The thread loop thus formed is then caught on the point 17a of a hook 17 making tangential contact with a curved portion of limb 7, and the loop is retained on the hook until the eye passes over the end of limb 7 and the needle leaves the body through the other end of aperture 14. The body is formed in three laminations, the spring-holding cavity being formed in the middle lamination 2, and the apertures 14 and 16 being formed respectively in the front and rear laminations 1 and 3. A star-shaped wheel 15 is pivoted between laminations 1 and 2, its limbs successively covering the aperture 14 to retain the spring 4. The inner face of lamination 3 is formed with a groove 10 which follows aperture 14 to assist in guiding the eye end of the needle. The body may be made of plastics material, when laminations 2 and 3 may be combined. Limbs 6 and 7, or either, may be welded to a single thickness of spring steel.
Patent GB-822677-A (GB)
Title: Chart reading devices
IPC: G01G23/18
Filed: 1957-10-10
Abstract: 822,677. Recording-apparatus. TOLEDO SCALE CORPORATION. Oct. 10, 1957 [Oct. 17, 1956; March 4, 1957], No. 31646/57. Class 106 (4). [Also in Group XVIII] Mechanism for reading a chart 2 comprises a group of relatively movable members 11, which carry feelers 10 adapted to engage raised protions on the chart, thereby positioning said members in a relationship determined by the graduation being read, and further feelers 20 which sense the relative position of members 11 and set up indicating or recording apparatus (not shown). The mechanism is described in connection with a printing weighing scale, the chart comprising a rotary disc of metal or reinforced plastic material on which are formed annular tracks of projections corresponding with different weights and the positions of feelers 20 are transmitted to type-wheels (not shown). A member 13 is oscillated about an axis 32 once during each cycle of operations by a motor (not shown) and in so doing it zeroizes the feelers, applies a braking pawl (not shown) to the disc 2, allows springs 35 to drive the feelers 10 about axis 32 into engagement with the projections on the disc, then withdraws the feelers with the members 11 held in their adjusted position whereafter the notches 22 on members 11 are searched by feelers 20.
Patent GB-844249-A (GB)
Title: Improvements in or relating to jet propulsion nozzles
Inventor: BROWN DAVID MORRIS
IPC: F02K1/40
Filed: 1956-10-18
Abstract: 844,249. Jet propulsion nozzles. ROLLSROYCE Ltd. Oct. 17, 1957 [Oct. 18, 1956], No. 31792/56. Class 110 (3). A jet propulsion nozzle comprising a cylindrical or frusto-conical outer surface and an inner surface defining for the flow of hot gas through the nozzle a duct having a series of circumferentially spaced axially extending gas paths leading from adjacent the inlet to the nozzle outlet, the gas paths being separated by inwardly projecting structures having at least side walls bounding the gas paths, the number of paths being selected to give a silencing effect in operation as compared with a tubular nozzle, is provided with a fairing structure affording an axially unobstructed path for the hot gas flowing from the nozzle and in axial alignment with the inwardly projecting structures, axially-extending outwardly facing channels which curve inwardly from their upstream ends to their downstream ends, the upstream ends being at such a radius from the nozzle axis as to receive air flowing rearwards outside the nozzle. This arrangement is said to reduce the drag of the nozzle. The jet propulsion nozzle, Fig. 1, comprises a frusto-conical outer wall 10 to which are attached a series of structures 11 of tetrahedron form which define a series of circumferentially spaced axially extending inwardly facing trough-like paths 12. A fairing structure, provided beyond the nozzle outlet 10b, comprises a series of sectors shaped structures 13, one aligned with each of the structures 11. Each structure 13 comprises a pair of radial walls 13a, a base wall 13b and an outer wall 13c. The wall 13c, which joins the radial walls 13a, has its upstream end radially level with the downstream end of the wall 10 and curves smoothly inwards to a point on the nozzle axis. The radial walls 13a project beyond the wall 13c to form an outwardly facing channel which conducts air flowing rearwardly outside the nozzle to the nozzle axis as indicated by the arrows 14. The radial walls 13a are extended upstream at 13d to facilitate attachment of the fairing structure to the nozzle. In a modification, Fig. 3 (not shown), the inwardly projecting structures do not extend to the nozzle axis and the fairing structure is formed integral with the nozzles. The radial walls of the fairing structure are formed by extending the side walls of the inwardly projecting structures. The invention may be applied to silenced convergent-divergent nozzles, silenced nozzles of by-pass engines and silenced nozzles provided with means for obtaining a reversed thrust for braking. Specifications 802,123, 811,455 and 823,949 are referred to.
Patent GB-618040-A (GB)
Title: Improvements in or relating to frequency controlling arrangements, particularly for the master oscillator of a television waveform generator
IPC: H04N5/06
Filed: 1946-10-26
Abstract: 618,040. Automatic frequency control systems. LORD, A. V., GERMANY, L. W., and PYE, Ltd. Oct. 26, 1946, No. 31844. [Class 38 (iv)] The frequency of an electric oscillator, e.g. the master oscillator of a television waveform generator, is maintained in fixed frequency and phase relationship with another frequency such as the mains supply by a variable control device for the oscillator operated by two synchronous motors which compare the two frequencies. Fig. 1 shows a master oscillator O feeding a divider chain D<SP>2</SP>, a portion of the output of which is passed through a filter F1 and amplifier A, to drive a synchronous motor M<SP>1</SP>, the shaft 4 (Fig. 2) of which drives one set of condenser plates 2 of a condenser Cc connected across the tuned circuit of the oscillator. A second similar motor M<SP>2</SP> drives the other set of condenser plates 1, and is driven by a filtered main supply. The condenser plates 1, 2 are thus rotated in fixed relative position until a deviation in frequency of the master oscillator occurs, when one set of plates moves relatively to the other, thus varying the value of the condenser in a sense to correct the frequency deviation. In a modification, Fig. 3 (not shown), the two motor shafts control the position of one plate of a stationary condenser through a differential gear-box.
Patent GB-865891-A (GB)
Title: Chemical plating process
IPC: C23C18/36
Filed: 1959-09-18
Abstract: Electroless plating is carried out using a solution below the precipitation temperature in contact with a surface being plated maintained at such a temperature that the part of the solution in contact therewith is above said precipitation temperature but it does not boil.  The surface, which may be copper, silver, gold, beryllium, boron, germanium, aluminium, thalium, silicon, carbon, vanadium, molybdenum, tungsten, chromium, selenium, tellurium, titanium, iron, cobalt, nickel, palladium, platinum, and alloys thereof is catalytic towards the solution.  The solution may contain 15-75 grams per litre of nickel salt, an 5-50 grams per litre of sodium hypophosphite and be used with a pH of 3.5-6.0 at a temperature below 180 DEG F. Examples include the heating of wire by electricity whist immersed in the solution, the exterior plating of a hollow cylinder with an internal electric heater, the external plating of a steel tube heated by steam from within, and the interior plating of tubing heated from without.
Patent GB-281330-A (GB)
Title: Current collecting trolley for electric vehicles
IPC: B60L5/32
Filed: 1927-11-28
Abstract: 281,330. Maschinenfabrik Oerlikon. Nov. 26, 1926, [Convention date]. Releasing-devices and supporting arrangements for collectors.-A pantograph frame is mounted on parallel shafts 5, 6 having a coupling released by a unidirectional pull on the frame, the recoupling being effected by the release of the fluid pressure which keeps the frame erect. Shaft 6 carries a lever 4 coupled by rods 1, 2 to a. lever 3 mounted loosely on the shaft 5 and actuating a fork 12 which engages an aperture or cam on quadrant 14 which is connected to quadrant 29 on shaft 6 by a spring 17 centrally anchored at 39. Undue pressure on the frame rocks the lever 3 to disconnect the fork 12 from quadrant 14, when the frame collapses. To erect the frame, pressure is released from a cylinder 19 which enables a spring 21 to act on piston 20 which actuates a bar 26 carried by lever 4 and so moves the rods 23, 24 and cross-pin 22 to reset the quadrants.
Patent GB-910735-A (GB)
Title: Production of hydroquinone
Inventor: GRAHAM ARCHIBALD ROBERT
IPC: C07C409/08
Filed: 1960-09-17
Abstract: Hydroquinone is produced by treating a carbinol hydroperoxide of formula p-R1R2C(OOH)C6H4C(OH)R3R4 wherein R1 and R3 are alkyl and R2 and R4 are H or alkyl, with hydrogen peroxide in solution in an inert solvent in presence of, as catalyst, an inorganic mineral acid or an organic acid of K (25 DEG C.) more than 1.5 X 10-3. Sulphuric, perchloric, chloracetic and aryl sulphonic acids, e.g., may be used. In examples, the starting material is the p-cymene derivative (R1, R2, R3, R4, = CH3) i admixture with the corresponding dihydroperoxide.
Patent GB-520966-A (GB)
Title: Improvements in or relating to methods of and means for moistening pulverulent substances
IPC: A23K1/00
Filed: 1938-11-04
Abstract: 520,966. Moistening meal &c. KELSEY, Ltd.,. T. S., and WEBER, A. F. Nov. 4, 1938, No. 32056. [Class 58] A pulverulent substance such as meal for animal or human consumption is moistened by agitating violently the material throughout the length of a chamber to produce a cloud of part:cles and applying throughout the length of the chamber a finely atomised spray or mist of liquid to the cloud. As shown, meal is fed from a mixer through a spout 2 having an adjustable slide 15 into a closed chamber 1 provided with. a rapidly rotating helical blade 5 and' blades 8 of a smaller pitch mounted on a shaft 4. Moisture is introduced from nozzles 9 supplied with water and compressed air from a tank 14 and a reservoir 11. The moistened material passes through a discharge conduit 3.
Patent GB-654111-A (GB)
Title: Improvements in or relating to automatic voltage control means for battery charging apparatus
IPC: H02J7/02
Filed: 1947-12-04
Abstract: 654,111. Automatic voltage control systems ; rectifying. KOEHLER MANUFACTURING CO. Dec. 4, 1947, No. 32064. Convention date, Oct. 17. [Classes 38 (ii) and 38 (iv)] An automatic D.C. voltage control system comprises a voltage sensitive relay energizing a reversible motor unit driving a variable impedance which is, in series with the A.C. input to a rectifier system. The voltage sensitive relay 15 connected across the bus-bars 2 energizes either one of a pair of oppositely rotatable induction motors 10, 10<SP>1</SP> driving, through reduction gearing, a variable resistor 7 in series with the primary of the transformer 4 which supplies the rectifiers 6 feeding the busbars 2. Thermal delay switches 16, 18 in series with the motors prevent chattering contacts in relay 15, and limit switches 20, 21 are provided at either end of resistor 7. A resistor 7 may be adjusted manually by disengaging the final gear of the reduction gear drive, Fig. 2 (not shown). A variable inductance may replace the variable resistor. Specifications 548,223 and 548,241, [both in Group XI], are referred to. The Specification as open to inspection under Sect. 91 states that the D.C. supply may be obtained from a shunt generator having the variable resistor in series with the field (Fig. 6, Cancelled, not shown). This subject-matter does not appear in the Specification as accepted.
Patent GB-809752-A (GB)
Title: Method of preparing secondary aromatic amines
IPC: C07C209/18
Filed: 1956-10-22
Abstract: Secondary aromatic amines are prepared by reacting a primary aromatic amine with a phenol in the liquid phase at elevated temperatures in the presence of a catalyst which is an organic or inorganic titanium ester or salt or hydrated titanium oxide.  A large number of examples of suitable titanium catalysts are mentioned, the preferred ones being hydrated titanium oxide, esters of titanic acid where all the titanium valencies are satisfied by alcoholate radicals, e.g. tetraisopropoxy titanate and titanium salts of organic acids, e.g. titanium tetra-acetate. Mono or polynuclear mono or polyhydric phenols may be reacted with mono or polynuclear mono or polyhydric primary aromatic amines. Reaction of a polyhydric phenol with a monohydric amine produces compounds of the type HO-R-NHR and R-NHR-NHR where R is an aromatic nucleus.  Reaction of a monohydric phenol with a polyhydric amine produces compounds of the type H2N-R-NHR and R-NHR-NHR while reaction of a polyhydric amine with a polyhydric phenol will give secondary amines with free phenolic radicals on the aromatic rings and secondary amines with free amino radicals on the aromatic rings.  Suitable phenolic compounds mentioned include phenol, chlorophenol, pyrocatechol, ortho, meta and para xylenols, hydroquinone, ortho, meta and para cresols, alpha and beta naphthols, indanols having at least one -OH group on the aromatic portion of the molecule, resorcinol, phloroglucinol, 4,4-dihydroxybiphenyl, mesitol, thymol, carvacrol, guaiacol, ortho-eugenol, orcinol, pyrogallol, 1-hydroxyanthracene and and 2-hydroxyanthracene and aromatic amines mentioned include aniline, toluidines, xylidines, alpha and beta naphthylamines, para-phenylenediamine, para - toluylene - diamine, para-amino - diphenylamine benzidine, tolylenediamines and xylylene diamines.  The reaction may be carried out at temperatures ranging from 184-350 DEG C. in a reaction vessel equipped with a reflux column and condenser and a means for venting or removing water, generally using reactants such that there is at least one primary amine group for each phenolic hydroxyl and between 0.5 and 10 per cent, preferably 2-5 per cent, by weight of the catalyst.  In examples: (i) hydroquinone and aniline are reacted in the presence of tetraisopropoxy titanate to give parahydroxy-diphenylamine and N,N1 - diphenyl p-phenylenediamine; (ii) as (i) but in the presence of titanium dioxide gel; (iii) as (i) but in the presence of titanium sulphate salt cake; (iv) beta-naphthol is reacted with aniline in the presence of tetraisopropoxy titanate to give phenyl-beta-naphthylamine; (v) phenol and aniline are reacted in the presence of tetraisopropoxy titanate to give diphenylamine.
Patent GB-537267-A (GB)
Title: Improvements in or relating to machines for compressing heels or other shoe bottom parts
IPC: A43D35/00
Filed: 1939-12-13
Abstract: 537,267. Compressing heels &c. BRITISH UNITED SHOE MACHINERY CO., Ltd., ELLIOTT, H. E., and MINETT, W. T. Dec. 13, 1939, No. 32089. [Class 17 (i)] Relates to machines for compressing heels and or other shoe bottom parts of the kind described in Specifications 12918/99, 22839/02, 10619/05, [all in Class 17]. 11454/11, [Class 17 (i)], and 347,130 and consists in improvements in the work feeding mechanism. A link 26 is connected to the crank 24 operating the compressing member, which link actuates a toggle 34, 36 having a yielding connection to the feed mechanism. The parallel links 22 actuating the feed mechanism are pivoted to bell crank levers 66, 68 connected to the link 36 by a notch in the link engaging a spring plunger 72 connected to the lever. This mechanism is constructed with parallel and central members obviating twist due to side strain.