baber/WOPTO huggingface dataset:
Patent GB-501385-A (GB)
Title: Improvements in or relating to the production of hydrogen peroxide
IPC: C01B15/023
Filed: 1938-04-08
Abstract: 501,385. Hydrogen peroxide. MATHIESON ALKALI WORKS. April 8, 1938, No. 10878. Convention date, July 22, 1937. [Class 1 (ii)] In the production of hydrogen peroxide by the oxidation of an organic hydrazo compound dissolved in an organic solvent in which the hydrazo compound and resulting azo compound are soluble but in which the hydrogen peroxide formed is insoluble, the oxidation being effected by an oxygen containing gas, the solvent employed is an aromatic hydrocarbon containing two benzene nuclei or a mixture of such hydrocarbons stable under the reaction conditions, which is a liquid at the temperature of the reaction and the vapour pressure of which is less than about 5 mm. at 100‹ C. Suitable solvents are diphenyl or di-para-tolyl-substituted methanes, ethanes and propanes or diphenyls or alkylsubstituted diphenyls having short side chains. Examples of such compounds are diphenyl methane, di-p-tolyl methane, alpha, alpha-diphenyl ethane, alpha, alpha-di-p-tolyl ethane alpha, alpha-diphenyl propane, alpha, #-diphenyl propane, alpha, #-di-ptolyl propane, and alpha, gamma-diphenyl propane. alpha-#-Di-p-tolyl ethane which is a solid .(m.p. = 86‹ C.) may be used in admixture with other aromatic hydrocarbons containing two benzene nuclei. According to one example a solution of p-azo-toluene in a, alpha-di-p-tolyl ethane is reduced at 60‹ C. by means of sodium amalgam in the presence of water, the amount of water being restricted to produce a waterin-oil type of emulsion on agitation. The hydrazo solution is separated from the spent sodium amalgam and from the aqueous caustic soda and is washed with water, or with a solution of sodium sulphate of such density as to ensure easy separation. The alkali-free solution of the hydrazo toluene is then agitated with a restricted amount of water in the presence of oxygen at 60‹ C., an aqueous solution of hydrogen peroxide being obtained. Other examples relate to the similar treatments at 25‹ C. of a solution of 2-amino-5-azo toluene in alpha, #- diphenyl propane and of a solution of p-N- dimethylamino azo benzene in di-phenyl methane.
Patent GB-564961-A (GB)
Title: Improvements in or relating to route or destination indicators
IPC: G09B29/06
Filed: 1943-07-05
Abstract: 564,961. Route indicators. HAYES, G. July 5, 1943, No. 10888. [Class 3 (i)] [Also in Group XXIV] In route &c. indicators having a display band which is wound backward and forward on two rollers by means of helical gears, the operating members of which are carried by a common driving shaft 1 and the operated members 6 of which are moved automatically to close a clutch connecting the said member to the roller by the normal end thrust of the gear, the clutch which becomes closed depending on the direction of rotation of the driving shaft 1, the clutch device is located within the driven helical member 6. Each stub shaft 8, which is provided with a square end 13 for engagement with the roller, is fitted with dog teeth 10 located between the adjacent ends of two journals 9 which carry the shaft 8. The driven member 6 is fitted internally with similar teeth 12 which engage the teeth 10 when the member 6 is moved sideways to its limit in one direction and are free of the teeth 10 when moved to its opposite limit. The member 6 may bear on the outside of the journals 9, or may run in outer journals 11. The teeth 10, 12 are made narrow to allow of maximum length of bearings. The journal box 5 is in two mating parts for ease of assembly. The outer bearings for the rollers are carried by a plate spring-pressed from a supporting wall toward the rollers, so that the latter can be readily detached for exchange &c. The shaft 1 may be operated directly or through gearing.
Patent GB-346984-A (GB)
Title: Improvements in fire extinguisher or sprinkler heads
IPC: A62C37/14
Filed: 1930-04-07
Abstract: 346,984. Fire - extinguishing. MATHER & PLATT, Ltd. and ROBERTS, A., Park Works, Manchester. April 7, 1930, No. 10964. [Class 47 (ii).] Relates to sprinkler heads of the kind in which a frangible bulb with a bursting charge of liquid supports the valve, and consists in transmitting the compressive stress to the bulb through levers, so that the load on the bulb is less than the load on the valve. As shown, the valve d is supported by a strut comprising levers a b engaging at a knife-edge c. The bulb h is compressed between the levers and a seating ion the frame f. In modifications, the bulb is under compression between arms projecting laterally from the levers a b.
Patent GB-213448-A (GB)
Title: Improved process and apparatus for manufacturing wheel rims and the like articles
IPC: B21D53/30
Filed: 1923-04-23
Abstract: 213,448. Wilkinson, G. April 23, 1923. Hoops and rings.- Channel section rims for baby carriages &c. are made by bending a metal strip to form a ring, welding the ends and then placing on a circular die 1 with a channel 3 therein and forcing the metal into this channel by a shaped roller. To allow the rim to be removed, the die 1 is made in two parts which are aligned by a projection 8 and recess 7. The die has grooves 5, 6 to hold the flat ring and one part 2 has a ball mounting 11 while the other has a shaft 9 by which it is rotated and moved axially as by a lathe. An idle roller mounted on the tool carrier may be used to force the metal into the channel. The edges of the rim may then be beaded.
Patent GB-215395-A (GB)
Title: Improvements in apparatus for recording and reproducing sound
IPC: G11B3/36
Filed: 1924-05-05
Abstract: 215,395. Kramer, E. May 3, 1923, [Convention date]. Feed-motions; tone-arms; tone-arm joints.- Relates to sound recording and reproducing machines in which motion is transmitted from the turntable spindle to the tone-arm and soundbox to feed the latter across the blank or record. The transmitting mechanism is such that the sound-box may follow any lateral oscillations of the turntable spindle, if the spindle does not run truly. Attached to the tone-arm 4 by a ball-andsocket joint 13 is an arm 12, which bears upon a flanged friction roller 23, fixed to a wheel 21. The spindle of this wheel is mounted in a cup 17, which is loosely fitted on a. screw 18, the head of which carries a worm 19 having a spiral thread in an horizontal plane. The worm gears with the wheel 21. The screw 18 is fixed in a member 16, attached by a spring sleeve 15 to the turntable spindle 14, and pressing upon the record or blank 20. A spring 24 may be connected to the tone-arm and the arm 12, to pull the latter against the friction roller 23. Mounted on the cup 17 is a roller 25, which is adapted to engage the arm 12. As the turntable 1 rotates, the cup 17 is prevented from turning when the roller 25 has been brought up against the arm 12. The worm 19 is, however, rotated with the parts 14, 16, and drives the wheel 21 slowly, the roller 23 in conjunction with the arm 12 thereby effecting the requisite feed-movement of the tone-arm and sound-box. The friction roller and the arm may be replaced by a pinion and rack. The tonearm is shown as being mounted on a vertical pivot-pin which engages in a socket in a support carried by an horizontal pivot 7. The support abuts against a set-screw 10, which enables the height of the sound-box to be adjusted. The tonearm may be telescopic to be adapted for use with turntables of different sizes. The Specification as open to inspection under Sect. 91 (3) (a) states also that instead of employing an horizontal swinging tone-arm, " a tonearm may be used which is shifted laterally in a parallel drive." This subject-matter does not appear in the Specification as accepted.
Patent GB-386661-A (GB)
Title: Improvements to tea leaf and other drying machines
IPC: F26B15/14
Filed: 1931-04-15
Abstract: 386,661. Band-conveyer drying- apparatus ; drying falling materials. LLOYD, L. N., Red Gables, Elgood Avenue, Northwood, Middlesex. April 15, 1931, No. 11127. [Class 34 (ii).] In drying materials such as tea, heated drying-medium is admitted at an intermediate point in the travel of the materials and travels with the materials, being then reheated and caused to traverse the materials in the opposite direction. The tea &c., fed in at 14, Fig. 1, passes alternately from side to side down through the chambers 1, 2 connected by rotary valve 15, and is finally delivered by rotary valve 17. The heater for the drying medium e.g. air, comprises a furnace 19 the products of combustion from which pass around tubes 20, 22, 23, 24. Dampers 26 may deflect a portion to pass around tubes 27. Air entering at 24a passes through the tubes 24, chamber 28, tubes 23, chamber 29, tubes 22, 20 to conduit 31, being mixed with air entering at 32 and passing through the lowermost tubes 20, this arrangement preventing overheating of the lowermost tubes 20. From conduit 31 the air is forced by a fan (not shown) through conduit 33, opening 34, chamber 2 and conduit 35, to the reheater 27. Thence a fan 7 forces the air through an opening into chamber 1 whence it escapes at the top. The conveyers 3, 4 in the chambers comprise endless chains to which are pivoted perforated trays 9, Fig. 3, which fall to a vertical position as they pass off the guides 10. To shake off adhering material the trays are given a second drop by pins 11. Baffle-plates 12, 13 cause the air to pass through the materials. Wipers 18 on the lowermost conveyers in the chambers push material fallen from the trays to the valves 15, 17. In Figs. 4 to 6 (not shown) the air is steam-heated. In initially charging or finally discharging the apparatus, the air admitted is automatically regulated according to the quantity of material therein, by a valve 48, Fig. 7, on a shaft 49 rotated slowly to the open or to the nearly closed position of the valve on bringing, by hand, one of two toothed sectors 51 into engagement with pinion 52 rotated in unison with the conveyers. A counterweight holds the valve open. The trays may pivot about fixed axes. When drying tea or other material subsequent to fermentation, the temperature at the second drying stage is sufficient to arrest fermentation. The materials may be sterilized before drying either in a separate chamber, or by heater tubes at the top of the first chamber, or by a sufficiently humid hot gaseous medium. Carbon dioxide or a mixture thereof with air may be used as the drying medium. According to the Provisional Specification, the drying medium may enter the apparatus at the intermediate point and there be divided to flow in opposite directions, or these two streams may be supplied by separate fans drawing the medium from a common heater or from separate heaters.
Patent GB-1195511-A (GB)
Title: Flexible Sheet Material Rolls having Internal Supporting Means Adapted to Fall Out of a Dispenser Automatically
IPC: A47K10/38
Filed: 1968-03-07
Abstract: 1,195,511. Rolled web dispensers. GEORGIA-PACIFIC CORP. 7 March, 1968 [8 March, 1967], No. 11156/68. Heading A4G. [Also in Divisions B8 and F2] A roll of sheet material 10 is formed on a supporting means 26, 12, 28, Fig. 1, of axial length unequal to the axial length of the roll to permit the automatic fall out of the supporting means from the dispenser 46, 48 on exhaustion of the roll. In Fig. 1 the supporting means comprises a core 16 having its ends flush with the roll ends and carrying at its ends trunnions 26, 28, each formed of an outer annulus 30, 38 engaging the core internally and joined by an internal web 42 to an inner annulus 32, 40 protruding axially of the core. On depletion of the roll, annulus 32 falls down cam 50 on the dispenser part 46 and the other inner annulus 40 moves axially into recess 55 on dispenser part 48 which has a cut-out 54 accommodating outer annulus 38 and core end 20 and a trunnion support flange 56 received within trunnion recess 44. Eventually the support means drops out of the dispenser. The roll is braked by rubbing at 52 on dispenser part 48. Inner annulus 32 nests within inner annulus 40 of another roll to permit stacking of rolls. The core 16 may be in two abutting or spaced portions, the spaced portions may protrude at the roll ends to enter the dispenser bearings or the outer ends of the spaced portions receive stub spindles carried by the dispenser.
Patent GB-676836-A (GB)
Title: Electric impulse signalling system
IPC: H03K5/05
Filed: 1950-05-05
Abstract: 676,836. Automatic exchange systems. STANDARD TELEPHONES & CABLES, Ltd. May 5, 1950 [June 16, 1949], No. 11163/50. Class 40 (iv). [Also in Group XL (c)] In an automatic telephone exchange if calls incoming to and outgoing from a subscriber's line occur simultaneously priority is given.to the setting up of the incoming call. It is arranged that a call incoming to the line results in the application of a pulse Pu<SP>1</SP> via resistance Rhl to an amplifier AMP<SP>1</SP> under control of a locally produced detector pulse d<SP>1</SP> which occurs within the time period of pulse Pu<SP>1</SP>. AMP<SP>1</SP> then causes the regenerator RG<SP>1</SP> to transmit a regenerated pulse Pu<SP>1</SP> to the register-controller RG<SP>3</SP>. The initiation of a call by the subscriber results in the application of a pulse Pu<SP>2</SP> via resistance Rh<SP>2</SP> to an amplifier AMP<SP>2</SP>, and as a result regenerator RG<SP>2</SP> transmits a pulse Pu<SP>2</SP> to the register-controller. The original pulses Pu<SP>1</SP> and Pu<SP>2</SP> have the same time position but the detector pulse d<SP>2</SP> associated with the latter occurs later than d<SP>1</SP>. The outgoing signal from AMP<SP>1</SP> is also applied to regenerator RGM which transmits an inverted pulse to rectifier Rcm which persists for the duration of the output pulse from AMP<SP>2</SP>. This output pulse is therefore absorbed in the resistance Rhm by the current flow through it and rectifier Rcm to RGM thus rendering.the incoming pulse Pu<SP>2</SP> ineffective to trigger RG<SP>2</SP>. The pulse regenerated by RG<SP>3</SP> in response to the incoming Pu pulse is arranged to occur one time unit later than the Pu pulse and may act on cold cathode tubes controlled by pulses of the time cycle to record the time position as if it were that of the pulse Pu which is characteristic of the subscriber's line concerned.
Patent GB-1179925-A (GB)
Title: Trigger Level Control Circuit.
IPC: H03K5/007
Filed: 1967-03-09
Abstract: 1,179,925. Valve or transistor clipping circuits. TEKTRONIX Inc. 9 March, 1967 [17 March, 1966], No. 11190/67. Headings H3T and H3W. In a direct-coupled clipping circuit, the clipping level is adjustably selected from a voltage derived by separate rectifying and smoothing of positive and negative peaks of the input signal. As shown, the signal 20 is passed via an emitter follower 40 to a positive peak rectifier 34 and via an optional level-shifting diode 48, which reduces hysteresis, to a negative peak rectifier 36. A potentiometer 28 selects as the clipping level a voltage intermediate that on the reservoir capacitors 30, 32. This voltage is fed via a Miller integrator 56, 64 and an amplifying transistor 76 to the input signal line so as to change the level at which the differential clipping transistors 88, 92 become operative. The circuit may be employed in an oscilloscope for generation of a trigger voltage corresponding to an appropriate percentage level of a varying amplitude deflection signal. In Fig. 2 (not shown), all transistors are omitted, the clipping being achieved by a cathode-coupled pair of thermionic valves having the signal 20 fed to one grid and the output from the slider of potentiometer 26 fed to the other.
Patent GB-286913-A (GB)
Title: Improvements in or relating to the manufacture of books
IPC: B42C19/04
Filed: 1927-04-28
Abstract: 286,913. Schmalfuss, H. April 2,9, 1927. Bookbinding; bookbinding- machines. - A method of manufacturing books consists in printing a number of similar impressions, for example eight, upon one side of at sheet, Fig. 1, each impression representing a, page of a book, the succeeding page being similarly printed upon the other side of the sheet, and the subsequent pages of the book being set out on sheets in like manner, so that by arranging similar sheets in groups and collating a sheet from each group the page units of eight books are obtained by cutting the pile of collated sheets where indicated by dotted lines in Fig. 1. The blocks of cut leaves each comprising a book are fed back downwardly between guide rails c, Fig. 4, into a binding machine where they are conveyed by endlessband conveyers over one or more abrading-rollers g rotating at a different speed from that of the books, in order to roughen the backs before the application thereto of a suitable, adhesive applied by rollers h. A backing-strip k of "kraft" paper or the like is applied to the adhesive back by an oscillating table i on to which the strips are fed, either mechanically or by hand, the strips being subsequently pressed by a series of rollers l. End or fly sheets p provided with strips of adhesive may be secured to the book before applying the backing-strips k, or the end sheets may be applied afterwards by feeding them between guide bars o and travelling endless bands m disposed on each side of the book. Alternatively the end sheets may be secured by adhesive applied to the sides of the book by lateral rollers. Covers may be applied manually or mechanically to the books a, which for this purpose are preferably turned with their backs uppermost by mechanism consisting of two oppositely directed side members r adapted to be moved inwardly to grip the book as it passes on to a receiving table q. The table is lowered to enable the gripping-members r with the book between them to turn through 180‹ to invert the book, after which the members r move outwardly and the table q rises to enable the book to pass to a finishing-machine.
Patent GB-657981-A (GB)
Title: Improvements relating to self-contained or portable air conditioners
IPC: F24F1/029
Filed: 1949-04-28
Abstract: 657,981. Refrigerating. BALLARD, V. J., and BIDDLE, Ltd., F. H. April 28, 1949, No. 11321. [Class 29] '[Also in Group X] In an apparatus for cooling air comprising a compresser 12, motor 13, condenser coil 14, storage tank 16 for liquid refrigerant, expansion valve 17 and an evaporator coil 18 connected to the compresser, a subcooling coil 15 is arranged between the tank 16 and the coil 18, and consists of a flat helically coiled tube with cooling fins, the coil being disposed in a tank 25 which receives through an opening 26, the condensate formed in a compartment 23 housing the evaporator coil 18. A filter-drier 115 may be fitted between the coil 15 and the valve 17. Room air is recirculated by a fan 21 through an inlet 2, past the coil 18 in the compartment 23 and out through a louvred opening 3 in a sloping top of the casing 1. The louvres are simultaneously swingable to vary the direction of air discharge. Out-door air for cooling the condenser coil 14 is drawn by a fan 19 through a rear opening 4 and is passed out through a rear opening 5. A regulable proportion of the out-door air may be admitted at 37 to the recirculated air, a controlling flap 35 being linked with the adjustable inlet louvres 6. The cabinet 1 may be removed readily from the chassis 11 supporting the cooling-apparatus to facilitate servicing.
Patent GB-1511125-A (GB)
Title: Amorphous silica products thereof and methods of preparing the same
IPC: C01B33/113
Filed: 1976-03-22
Abstract: 1511125 Amorphous silica OSAKA PACKING SEIZOSHO KK 22 March 1976 [25 March 1975 (3)] 11401/76 Heading C1A An amorphous silica particle has at least two surfaces parallel, a length of 1-500 microns, a thickness of 50  - 1 micron, a length:thickness ratio of at least 10:1 and an average pore diameter of 20-40 . The particles may be made by contacting calcium silicate crystals with CO 2  in the presence of water to form an amorphous silica having the configuration of the crystals and extremely fine crystals of calcium carbonate thereon, contacting the resulting product with an acid to decompose the calcium carbonate to CO 2  and calcium salt and separating the amorphous silica from the calcium salt. The calcium silicate starting crystal, and hence the amorphous silica derived therefrom, may be lathe-like, plate-like, foil-like or plate-like primary particles. An amorphous substantially globular secondary particle of silica having a diameter of 10-150 microns composed of numerous primary particles of amorphous silica randomly interlocked with each other may be made by the same technique from calcium silicate crystals in the form of substantially globular secondary particles. A shaped body of the amorphous silica comprising such primary particles randomly three-dimensionally interlocked with one another with voids therebetween, typically having a porosity of at least 50%, may similarly be made from a shaped body of calcium silicate.
Patent GB-376830-A (GB)
Title: Improvements in driving belts
IPC: F16G1/24
Filed: 1931-04-17
Abstract: 376,830. Driving-belts. MATSUMOTO, S., 28, Ichome, Kobinatadaimachi, Koishikawa-Ku, Tokio. April 17, 1931, No. 11438. [Class 80 (i).] Relates to a linked driving-belt of the kind described in Specification 235,616, [Class 80 (i), Gearing, Belt &c.], in which links carrying friction blocks are interconnected by U-shaped pins inserted alternately from opposite sides of the belt and rocking one upon the other. The links 10, Figs. 3 and 4, carry, upon projections 16, friction segments 17, which are held laterally in position by side-plates 20. Through holes 15, 18 in the links are inserted U-shaped pins 13 with legs 6, 7, pairs of legs 6 rocking together on surfaces S, S<1>, Fig. 5, of small radius, their faces G, Q fitting securely against edges 8, 9 of the holes 15. The legs 7 have bent ends 11, or carry nuts, which serve to maintain the side-plates 20 in position.
Patent GB-278977-A (GB)
Title: Improvements in automatic acetylene generators
IPC: C10H9/00
Filed: 1927-04-29
Abstract: 278,977. Menz, E. April 29, 1927. Liquid supply controlled by variations in gas pressure; generators supplied with liquid successively.-Relates to automatic acetylene generators in which the supply of water is controlled by the gas holder, which on rising closes the outlet from the generating chamber so as to produce therein a sudden increase of pressure. According to the invention, the byepass which comes into operation when the outlet pipe from the generating chamber is closed consists of a hood 15 within the gas holder 3 and concentric with the outlet pipe 11. In the construction shown in Fig. 1, the valve 13, which closes the pipe 11, is carried by a sleeve 14 resting on a lever 18; the latter is actuated by a ring 17 carried by the gas holder. Alternatively, the valve 13, Fig. 2, may be normallv held on its seat by a spring 22, being opened directly bv the gas holder, as it falls, engaging the projecting end of the valve stem. In this construction the valves 13 may be actuated through levers &c. and the valve boxes may be provided with hoods dipping into the water. By providing a plurality of generating chambers each with a separate outlet pipe, valve and byepass, and by making the projecting valve stems of different heights, the several generating chambers may be automatically brought into operation in succession.
Patent GB-380747-A (GB)
Title: Dust extracting apparatus
IPC: E21F5/00
Filed: 1932-04-21
Abstract: 380,747. Dust collectors; injectors. SCHREIBER, O., Neunkirchen, Siegen, Germany. April 21, 1932, No. 11493. Convention date, April 23, 1931. [Classes 8 (ii) and 71.] In the extraction of dust, e.g. from boring tools, coarse dust falls into a pocket Sand the finer material is passed by a water jet h into a guide nozzle a rotated by a water jet b impinging on blades g. The guide nozzle carries rotary scrapers k, k<1> which remove sludge from the interior of the exhausting tube, and the fixed nozzle h carries scrapers which clean the guide nozzle. The coarse dust pocket S has a spring- closed door r opened by a pin operated by a lever l actuated by a helical rib on the guide nozzle.