baber/WOPTO huggingface dataset:
Patent GB-508497-A (GB)
Title: Improvements in and relating to diascopic projection apparatus
IPC: G03B21/11
Filed: 1937-12-31
Abstract: 508,497. Optical-projection apparatus. ANCIENS ETABLISSEMENTS BARBIER, BENARD, & TURENNE, and MESTRE, L. N. Dec. 31, 1937,No. 36240. [Class 97 (i)] A diascope includes at least two objectives corresponding to different magnifications, at least one of which is associated with a coaxial condenser, the objectives and condensers being carried on supports rotatable integral with each other so that one optical system may be substituted for another, As shown, the condensers 44 ... 46 are carried on a plate 43'supported by a rotatable shaft 39' connected by a coupling 41 to a shaft 39<11> bearing the corresponding objectives 54, 55, 56, the shafts being rotated by gear-wheels 60, 61 driven by a hand wheel 58. A spring-pressed pin 49 engaging a recess 48 in the plate 43 holds it in position. The object carrier comprises a plate 20 rotatably supported in a sleeve 11 vertically adjustable by a screw 15 for focusing. The disc 20 has four circular apertures bearing rotatable discs 23, 23<1> carrying the objects to be projected. As shown, the disc 23 has guides 27, 28 along which the negative or positive 29 may slide during projection. The disc 23<1> carries film feeding and receiving rollers 31, 32, and a spring-pressed plate 35 to hold the film. Spring pressed plungers hold the plate 20 in position. A diaphragm 70 may be provided, and the adjustable mirror 63 may be placed before the objective. A water tank 5 is placed before the lamp 3 and fixed condensers 4.
Patent GB-906153-A (GB)
Title: Improvements in and relating to the delivery of divided solid materials
Inventor: STEVENSON DOUGLAS FREDERICK
IPC: B27N3/14
Filed: 1959-01-12
Abstract: 906,153. Endless conveyers. BRITISH PLIMBER Ltd. April 1, 1960 [Jan. 12, 1959], No. 36291/60. Divided out of 906,152. Class 78 (1). In apparatus for feeding material of varying density from a supply source on to a receiving surface in the form of an endless belt 9, to form a layer of substantially uniform mass per unit area of the belt, as described in Specification 906,152, the material is first deposited on the belt in the form of a continuous layer by spreading means 21, 21a each consisting of a series of rods or wires 23 extending transversely of the belt and distributed about a common axis about which they are rotatable and which is spaced above and parallel to the belt. The rods or wires are anchored to end discs 22 secured to shaft 20. The shafts 20 of the two spreading means are driven such that the rods or wires engaging the material move in a direction opposite to that in which the belt 9 moves. A series of closely spaced idler rollers 13 supports the belt 9 below the spreading means.
Patent GB-1284252-A (GB)
Title: Complex forming polymers
Inventor: CHAPURLAT ROBERT
IPC: C08G73/06
Filed: 1970-07-27
Abstract: 1284252 Complex-forming polymers RHONEPOULENC SA 27 July 1970 [28 July 1969 26 Aug 1969] 36337/70 Headings C3P and C3R Complex-forming polymers contain repeating units of formula where L is a valency bond or -O-, -S-, -CO-, -CHR<SP>1</SP>- or -NR<SP>1</SP>- (R<SP>1</SP> being hydrogen or alkyl), a, a<SP>1</SP> and a<SP>2</SP> are hydrogen, alkyl groups or valency bonds, one or two of these symbols being valency bonds, or a<SP>1</SP> and a<SP>2</SP> together are -CR<SP>1</SP>=CR<SP>1</SP>-, the units being linked together by polyvalent radicals. The polymers are obtained from monomers of the formula above but where a, a<SP>1</SP> and a<SP>2</SP> are not valency bonds, by polymerization through olefinically unsaturated substituents in the monomer, by polycondensation through reactive substituents in the monomer with other reactive compounds, or by attaching the monomer to previously produced polymers, e.g. by condensation reactions. The polymers form complexes when they or their acid addition salts are reacted with compounds containing non-alkaline metal atoms, co-ordination bonds joining the nitrogen atoms in the polymers to the metal atoms. In examples, polymers are obtained by condensing 4,4<SP>1 </SP>- bis - (p - formylstyryl)- 2,2<SP>1</SP>-dipyridyl with cyclohexanone and acetone, by condensing 4,4<SP>1</SP>-diamino-2,2<SP>1</SP>-dipyridyl with 4,4<SP>1</SP>-diisocyanato-diphenylmethane and with pyromellitic anhydride, by reacting 4,4<SP>1</SP>-dimethyl-2,2<SP>1</SP>-dipyridyl with sodamide and then with 1,5-dibromopentane, by reacting 4,4<SP>1</SP>-bis- (p-formylstyryl)-2,21-dipyridyl with polyvinyl alcohol and trioxymethylene, and by reacting 4,4<SP>1</SP>-dimethyl-2,2<SP>1</SP>-dipyridyl, with p-divinylbenzene; some of the polymers are used to form complexes with various metal compounds. Uses.-In the extraction and recovery of metals.
Patent GB-1513404-A (GB)
Title: Process for the manufacture of polyvinylchloride by the emulsion process with control of vinylchloride emissions
IPC: C08F2/24
Filed: 1975-09-04
Abstract: 1513404 Vinyl chloride emulsion polymerization CHEMISCHE WERKE HULS AG 4 Sept 1975 [5 Sept 1974] 36435/75 Heading C3P Emulsions of polyvinyl chloride (solids content #40%) are prepared by a discontinuous polymerization process using 0À4-0À9% of an emulsifier, in the presence of a water-soluble radical catalyst, carried out in a pressure kettle of at least 60 m.<3> capacity, wherein after completion of individual polymerization cycles, the polymer dispersion is conveyed under a monomeric vinyl chloride pressure of 0À1 to 2À5 atmospheres from the polymerization kettle into a discharge device; the polymerization vessel is left unopened between polymerization cycles and if necessary is cleaned automatically by hydrodynamic means. In the example, at the end of polymerization, the pressure between the polymerization kettle (1) and the discharge vessel (2) is equalized via pressure equalizing line (3) to c. 3 atmospheres. Line 3 is then closed via shut-off device (4). The shut off devices, (5) in line (6), and (8) in the pressure release line (7) between (2) and the gasometer (9) are then opened whereupon the PVC dispersion flows into discharge vessel (2). When the polymerization kettle (1) is empty as indicated by a radioactive level indicator (10), the flushing and cleaning process, using an automatic hydrodynamic device, is initiated under an atmosphere of vinyl chloride.
Patent GB-924542-A (GB)
Title: Process for and apparatus for etching a printing member e.g. a rotogravure roll
Inventor: BOITOS EMIL GEORGE
IPC: C23F1/08
Filed: 1961-10-11
Abstract: 924,542. Etching. DETROIT GRAVURE CORPORATION. Oct. 11. 1961, No. 36565/61. Class 100 (2). An etching process includes the step of continuously diluting the etching fluid. A copper cylinder 10 to be etched is rotatably mounted above a trough 22 and is driven through gears 14, 16 by a motor 18. Etching fluid such as ferric chloride is pumped by a pump 30 from a tank 26, through a pipe 34 and an outlet 36 above the cylinder 10, the outlet being adjustable from left to right (as seen in Fig. 1) and being continuously reciprocated in a direction parallel to the axis of the cylinder during etching. The fluid flows round the cylinder and is collected in the trough 22 whence it is conveyed by a pipe 24 back to the tank 26. Water can be introduced into the pipe 24 through a pipe 68, a pump 66 being actuated to effect this. Etching is commenced by starting the pump 30 and motor 18 and circulating fluid, the strength of which may be 43  or 44  BaumÚ, through the system, e.g. for two to five minutes. The pump 66 is then started and run, e.g. for fifteen to twenty minutes during which time etching fluid continues to circulate in the system and the strength thereof is diluted to 38 or 39 BaumÚ. The pump 66 is then stopped and the diluted fluid is circulated through the system for a further period which may be from two to five minutes. In a modification, Fig. 6, etching fluid is discharged into a trough 102, over which a cylinder 100 is supported, through a pipe 104 and is conveyed from the bottom of the trough through pipes 116, 120 at such a rate that the general level of fluid in the trough is maintained below the surface of the cylinder 100. Compressed air is blown through a pipe in the bottom of the trough so as to cause bubbles in the fluid in the trough which rise and strike the surface of the cylinder as the latter rotates. The operation of the fluid circulating system in this embodiment is otherwise identical with that of the embodiment shown in Fig. 1.
Patent GB-343621-A (GB)
Title: An improved means for winding the "bunch" in bobbins or cops produced on ring spinning frames
IPC: B65H54/14
Filed: 1929-11-30
Abstract: 343,621. Building motions for ring spinning machines. KERSHAW, J. G., 245, Marcil Avenue, and DAWSON, R., 262, Wood Avenue, both in Montreal, Canada. Nov. 30, 1929, No. 36776. Convention date, April 13. [Class 120 (ii).] The " bunch " of yarn at the base of the bobbin for use in shuttles of automatic looms is wound on ring spinning frames by means of an auxiliary cam plate actuating a pivoted lever, and carrying a clutch member coacting with a clutch member carried by the main building motion cam. The hub 19 of the main cam 15 loosely mounted on a hollow shaft 31 is slotted at 23, Fig. 5, to receive the " bunch " cam plate 24 which engages faces 33, 34, Fig. 7, of an internal cam 32 in a recess 20 of the hub 19. At the commencement of winding a dog 35 pivoted at 37 and having a spring 38, Fig. 3, is out of engagement with a notch 30 in a disc 29 on the shaft 31, which thus rotates and reciprocates the cam plate 24 without moving the cam 15 and forms the bunch ; at the completion of one revolution the tooth 36 of the dog engages the notch 30 which couples the cam 15 with the shaft 31 to form the main winding of the bobbin.
Patent GB-1218707-A (GB)
Title: Mechanism for opening bales of fibrous material
Inventor: IGNATOV ANATOLY VASILIEVICH
IPC: D01G7/08
Filed: 1969-07-22
Abstract: 1,218,707. Bale openers. VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY INSTITUT LEGKOGO I TEXTILNOGO MASCHINOSTROENIA. 22 July, 1969, No. 36815/ 69. Heading D1N. [Also in Division B8] A feed mechanism for a bale opener comprises a movable carriage having two plates 8 and 9 located one above the other. The top plate 8 which receives 'the bale is provided with holes, and the lower plate is equipped with spikes 10 adapted to enter the holes to hold the bale being opened. As described, an endless chain reciprocating conveyor 2 is used to feed the bale onto the movable carriage 8, 9. The conveyor 2 has bale supporting slats 15 and pusher plate 17, and is controlled by bales-sensing photoelectric device 22 and limit switch 25. Switch 25 causes the motor driving conveyor 2 to reverse and limit switch 24 stops the conveyor. The latter switch also initiates vertical movement of the carriage 8, 9, the initial movement of which causes spikes 10 to pass through the holes in top plate 8. The carriage 8, 9 is driven upwards by a first motor until the bale it carries actuates photo-electric sensor which then causes the carriage to be moved upwards against the spikes rollers 4 by a lower speed motor. Upward movement of the carriage is terminated by a final limit switch 45 which lowers the carriage using the first motor until it engages limit switch 26.
Patent GB-1383960-A (GB)
Title: Semiconductor laser
IPC: H01S5/32
Filed: 1972-08-07
Abstract: 1383960 Use of luminescence and electroluminescence LICENTIA PATENT-VERWALTUNGS-GmbH 7 Aug 1972 [6 Aug 1971 27 Dec 1971] 36827/72 Heading C4S [Also in Division H1] An indirect band gap elementary semiconductor material, such as germanium or silicon, can be operated in a lasing mode by providing a structural non-uniformity in the light emitting region, the non-uniformity causing a displacement of the conduction band so that a direct band gap is obtained between an absolute secondary minimum of the conduction band and the absolute maximum of the valency band. The material is then equivalent to a direct band gap compound semi-conductor material such as gallium arsenide. The conduction band displacement is obtained by providing a periodic variation of the structure in the light emitting region in the crystallographic direction of an absolute secondary minimum of the conduction band, the periodic length of structure variation being of the order of the mean free path length of the conduction electrons in the semiconductor. This variation may be caused by dislocations or point effects in the crystalline structure or may be obtained by providing alternate bands 2, 3 of different doping concentration or by alloying, Fig. 2, in the light emitting region. The semi-conductor body may contain a P-N junction, Fig. 4 (not shown), and may further be of heterostructure formation, Fig. 6, in which a P-N junction is located in a laser active region 2 flanked by differently doped regions 1 and 3, the gap between the valency and conduction bands being least in the active region. An example uses an Si 1-x Ge z  alloy for the active region 2 and an Si 1-y Ge y  alloy for the outer regions 1, 3, where y < x. In addition to the main electrodes shown an auxiliary electrode may be provided, the main electrode  current being maintained at below the lasing  threshold and a laser output pulse being obtained each time the auxiliary electrode is pulsed. The laser may be mounted on a diamond heat sink. Light or electron beam pumping may be used in structures not formed with a P-N junction.
Patent GB-428353-A (GB)
Title: Improvements in or relating to surgical syringes
IPC: A61M5/32
Filed: 1934-12-28
Abstract: 428,353. Surgical instruments ; disinfecting. BRAUTLECHT, G., 78, Hohenzollernstrasse, Bremen, Germany. Dec. 28, 1934, No. 37162. [Classes 81 (i) and 81 (ii)] A canula carrier adapted to be positioned on a surgical injection syringe and accommodated therewith in a container comprises a plate provided with feet to form a stand and a yoke whereby it can be withdrawn from the container. The plate e, Fig. 1, has an aperture d to fit over the enlarged portion el of the mouthpiece of the syringe, or, if the syringe is to be placed mouth downwards in a container b filled with sterilizing fluid, or if the mouth is eccentrically arranged, the aperture is slotted so that it can be slid upon the plunger rod from the side. The legs h are in the form of springs which grip the barrel a of the syringe. Apertures g receive the canulae f and, when the carrier has been removed by the yoke l, it can be stood on the inverted lid i of the container, thus keeping the canulae sterile. The plate e may be integral with the legs h, the whole being made from sheet metal by stamping ; or the legs may be tubular, with cut-away portions p, Fig. 5, to expose certain of the canulae, a small tube may be provided below the other apertures g to receive the remaining canulae.
Patent GB-835685-A (GB)
Title: Improvements in or relating to expanding bracelets
Inventor: GANTNER JOHN
IPC: A44C5/08
Filed: 1958-11-19
Abstract: 835,685. Bracelets. MONTAL WATCH FITTINGS Ltd. Nov. 19, 1958, No. 37289/58. Class 43 A bracelet comprises a plurality of links extending end to end wherein each link comprises an inner and an outer tubular member 17, 18 the inner member telescoping within the outer member of a next adjacent link, the tubular member being pivoted together by short pivot pins 24 and a spring 16 extending through the links to contract the links. The telescopic movement of an inner member is limited by a nib on the member, which moves in a slot in the outer member, contacting an abutment at the end of the slot. The ends of the outer members are interfitting being shaped convex and concave. The members are of square or rectangular cross-section. A cap 31 engages over the outside of the outer member. One end of the spring is anchored to a connector 13 for a watch ring and the other end to a retainer 15 on one of a series of non-telescopic detachable links to which the telescoping links are connected. The detachable links comprise a tubular member 41 similar to the outer member 18 but having two holes for a screw 46 which also passes through a cap 45 and an inner member 43 connected to the next adjacent member 41 by the lugs 24.
Patent GB-1272966-A (GB)
Title: Filling apparatus
IPC: B65B3/30
Filed: 1969-07-24
Abstract: 1,272,966. Bottling, &c. NETZSCH MASCHINENFABRIK GEB. 24 July, 1969 [26 July, 1968], No. 37289/69. Heading B8T. [Also in Division F2] Apparatus for filling containers comprises an eccentric screw pump 1 connected to filling valves 3, 3<SP>1</SP> disposed above two series of containers 5, 5<SP>1</SP> which are mounted on conveyer belts 4, 4<SP>1</SP>. The action of the valves 3, 3<SP>1</SP> is governed by pilot valves 7, 7<SP>1</SP> which admit compressed air into the valves 3, 3<SP>1</SP> to close off the valve outlet hose, the valves 7, 7<SP>1</SP> being synchronized with the pump 1 whose motor carries a rotational disc 12 having permanent magnets 11 which generate pulses on passing a head 13 incorporating a pulse generator, the pulses being registered by counters 14, 14<SP>1</SP>. When counter 14 is in operation, counter 14<SP>1</SP> is inoperative, valve 7 is closed whereby filling valve 3 is open. After counter 14 has registered a predetermined number of pulses it emits a pulse which opens valve 7 thus closing valve 3 and also moves conveyer belt 4. The same pulse may switch off counter 14 and switch on counter 14<SP>1</SP> thus closing valve 7<SP>1</SP> and opening valve 3<SP>1</SP>, repeating the cycle. If the capacities of containers 5 and 5<SP>1</SP> differ, the pulse counters may be set to respond after a correspondingly different number of pulses.
Patent GB-368829-A (GB)
Title: Process for the manufacture of 1:4-diaminoanthraquinone
IPC: C07C225/34
Filed: 1930-12-10
Abstract: Hydro-1 : 4-diaminoanthraquinone, described in Specification 15355/08, [Class 2, Acids and salts, Organic &c.], as a leuco derivative of 1 : 4-diaminoanthraquinone, is treated in concentrated sulphuric acid with an oxidizing agent at ordinary temperatures to give hydro-1 : 4-diiminoanthraquinone, which on treating with diluted acid, or on raising the temperature, is rearranged to become 1 : 4 - diaminoanthraquinone.  The oxidation and isomerization may be effected in one operation.  According to examples, hydro-1 : 4 - diaminoanthraquinone, dissolved in concentrated sulphuric acid, is treated at various temperatures with manganese dioxide, halogens, lead peroxide, persulphates, chromic acid, or potassium ferricyanide, with simultaneous or subsequent isomerization.  Specifications 274,558, [Class 2 (iii), Dyes &c.], and 368,824 also are referred to. The parent material is referred to in the Provisional Specification as 1 : 4-diamino-oxanthrone.  The intermediately formed hydro-1 : 4 - di - iminoanthraquinone reacts with water to give a hydro1 : 4-diketoanthraquinone-quinone, which on reduction gives hydroquinizarine.
Patent GB-1072984-A (GB)
Title: Control systems for thermal actuators
IPC: G05D23/24
Filed: 1964-09-11
Abstract: 1,072,984. Automatic temperature control systems. JOHNSON SERVICE CO. Sept. 11, 1964, No. 37322/64. Heading G3R. A temperature control system for an air conditioning plant comprises a thermistor 26 in a phase sensitive bridge 24, the output of which through transistors 38, 42, 46 and R. C. network 50 phase control a thyristor 54 when the temperature is above a determined value. The thyristor energizes a heater in a thermally extendible actuator 64, which when fully extended cyclacly opens the ignition electrode circuit. The thyristor is mounted on the actuator which forms a heat sink.
Patent GB-523065-A (GB)
Title: Improvements relating to apparatus for the production of electric oscillations
IPC: H03B19/03
Filed: 1938-12-23
Abstract: 523,065. Converting. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., WALKER, A. H. B., and SHEPPARD, E. A. Dec. 23, 1938, No. 37451. [Class 38 (ii)] An arrangement for producing an alternating or periodically varying current of a frequency independent of that of the supply R, S from which it is derived comprises a saturable inductance L and capacity C so related as to have a rising current-voltage characteristic and connected in series with a resistance K having a positive temperature coefficient, the arrangement being such that the current in the circuit varies periodically as the resistance alternately heats and cools. The output may be taken from terminals X<SP>1</SP>, Y<SP>1</SP> as a modulation of the input frequency, or an unmodulated current of a frequency determined by the temperature characteristic of the resistance K may be obtained at terminals X, Y by the use of a bridge arrangement of rectifiers D.
Patent GB-1328173-A (GB)
Title: Pile driver
IPC: F02B3/06
Filed: 1971-08-10
Abstract: 1328173 Pile drivers DELMAG-VERWALTUNGS GmbH [trading as DELMAG-MASCHINENTABRIK REINHOLD DORNFELD] 10 Aug 1971 [18 Aug 1970] 37501/71 Heading B3H A diesel pile driving hammer of the type with a stationary cylinder 12 and a movable piston 14 arranged to strike an anvil 13 has the impact surfaces 13.1, 14.1 of the piston and the anvil formed substantially flat. The fuel is directed on to the anvil surface from an inclined passage 19 connected to a metering pump 18 operated by a double arm lever 16 pivoted to the cylinder wall. One arm 16.1 of the lever has a cam surface which extends into the cylinder for engagement with the piston as it descends so that the other arm 16.2 moves to operate the pump. The fuel is atomized by the impact and forced radially outwards into a combustion chamber defined by an annular groove 13.2 on the anvil surface and a bevelled edge 14.2 of the piston surface.
Patent GB-992707-A (GB)
Title: Spring suspension devices for vehicles
IPC: F16F7/06
Filed: 1961-10-20
Abstract: 992,707. Springs. AEON PRODUCTS (LONDON) Ltd. Oct. 20, 1961 [Oct. 20, 1960], No. 37784/61. Heading F2S. [Also in Division B7] In an independent suspension for a vehicle a hollow rubber spring 3 freely mounted on the pivot pin 9 of a swinging arm 1 or other suspension link is compressed axially upon swinging movement of the arm and provides lateral support for the pin 9 by virtue of the increased stiffness of the spring when compressed. Compression of the spring 3 is effected by helical threads 10 (Fig. 1) on the pin 9 and a bush 8 secured to the vehicle frame 7, by oblique surfaces (Fig. 2) on the arm 1 and on a hard or flexible disc 4<SP>1</SP> secured to the frame, or by arranging the spring 3 between oblique faces 17, 20 (Figs. 3 and 5) on the arm and/or the frame. In Fig. 1 a rubber rebound pad 13 is mounted on the pin 9 between the frame and a disc 14 retained on the pin by a nut 15. A metal disc 5 secured to the frame by screws 6 may be cup or dishshaped such that the spring 3 becomes firmly clamped thereto when compressed or the screws 6 may project into the spring. A sleeve 16 (Fig. 3) or 25 (Fig. 5) on the arm 1 or secured to the frame 7 may encase the spring 3. The sleeve 25 may be arranged obliquely of the pin 9 as shown and may be tapered (Fig. 6, not shown) to provide a progressive stiffening of the spring 3. The arm 1 carries a stub axle 2 and may be formed with a contact surface 22 (Fig. 3) for abutment with an additional rubber spring mounted on the frame. The spring 3 may comprise spring elements combined in series and may be employed in parallel. In modifications of the arrangement shown in Fig. 3 the sleeve 16 is tapered, and interengaging threads or collars and grooves may be provided on the sleeve 16 and the abutment 21.