baber/WOPTO huggingface dataset:
Patent GB-191087-A (GB)
Title: Improvements in spring escapement mechanisms
IPC: G03B1/18
Filed: 1921-06-28
Abstract: 191,087. Rivetta, G. June 28, 1921. Escapement mechanism.-In photographic and other apparatus in which a shutter or other rotary element is normally held through a ratchet wheel by a two-armed pawl or detent, the pivot of the detent is adjustable in a curved slot of such form that the retaining position of the end of one arm remains constant whilst the end of the other arm may intersect the path of the ratchet teeth at different points according to the position of the pivot and in one position of the pivot both arms of the detent may be disengaged to allow continuous rotation of the ratchet wheel. In the arrangement in Fig. 1, a spring &c. driven ratchet wheel R is normally held by the arm B of a double pawl or detent F held in engagement by a spring H and released when required by application of a force indicated by the arrow P. The detent pivot 0 is adjustable in a curved slot S centred about the point B<1> so that the retaining position of the arm B remains constant. When the pivot is in position 1 the oscillation of the detent is limited to the angle a by the stop M and both arms may be disengaged to allow continuous rotation of the ratchet wheel. When the pivot is in position 2, the detent only allows step-by-step actuation of the ratchet wheel, whilst the point of engagement of the arm D with the ratchet wheel may be advanced by shifting the pivot to position 3. The arrangement is applicable for controlling the shutter of an apparatus for taking both kinematographic and ordinary photographic views, the ratchet wheel being allowed to rotate continuously for taking kinematographic views whilst the adjustment of the engaging position of the arm D enables either " time " or " instantaneous " exposures to be given when taking single photographs.
Patent GB-862720-A (GB)
Title: Improvements in or relating to apparatus for supplying metered volumes of two liquids
IPC: G05D11/13
Filed: 1959-05-22
Abstract: 862,720. Stuffing-box substitutes. LADENDORF, A., and LADENDORF, K., [trading as BRAN & LUBBE KOMM.-GES.]. May 22, 1959 [May 31, 1958], No. 17601/59. Class 122 (5). [Also in Group XXVIII] Metered amounts of two liquids are supplied, preferably to a common reaction zone, by one reciprocating pump 1 which supplies one liquid and has a plunger 3 reciprocating in the pressure space 4 of the pump through packing means formed with diametrically opposed apertures 10 connected to a recess 20 extending around the periphery of the plunger, and a second reciprocating pump 17 which is driven in synchronism with the first pump and pumps the second liquid through the said packing means via one aperture 10, recess 20, and second aperture 10. The two pumps are driven from an electric motor 11 through worm gearing 12, 13, 14 and connecting rods 15, 16, provision being made for adjusting the respective strokes. The stuffing box 9 of the first pump is fitted with a cage 8 between packing rings 9 and is provided with diametrically opposed apertures 10 aligned with the cage 8 which has inner and outer annular recesses 20, 21 connected by radial ducts 22. A pressurelimiting valve 19 is connected in the liquid line from the cage 8. The second liquid may be a lubricant or one which is capable of removing deposits of the first liquid from the plunger 3 as by a solvent or detergent action or it may be such as to react with the first liquid.
Patent GB-544689-A (GB)
Title: Improvements in containers made from cardboard or similar material
IPC: B65D5/02
Filed: 1940-12-12
Abstract: 544,689. Cardboard &c. containers. ROSE, A. G., and ROSE BROS. (GAINSBOROUGH), Ltd. Dec. 12, 1940, No. 17616. [Class 18] A tubular cardboard &c. container of rectangular section, the ends of which are closed by flaps glued together, has an outer pair 14, 16 of flaps the combined area of which is substantially equal to that. of the end of the container, and at least one of them carries a tab 17 positioned in the plane of the flap so that it covers any gap 13 between inner flaps 11.
Patent GB-150152-A (GB)
Title: Adjustments for acoustic instruments
IPC: A61F11/00
Filed: 1919-07-15
Abstract: 150,152. Kahn, C., (trading as Rein & Son, F. C.). July 15, 1919. Hearing-appliances.-Comprises means for adjusting hearing-appliances of the kind comprising a resonator such as a worn on the top or at the side of the head and having conduits communicating with the canal of the ear. The conical sound-collecting tube c, which faces an adjustable sound director l at its larger end, is bent to pass through the wall of the resonator and near this point is fitted with two right-angle elbow-pieces e, g. A curved tube h, terminating in an ivory or other knob j, passes from the elbow-piece g to the ear. The swivelling of the tube h on the elbow piece g permits adjustment towards the front or back of the head, while the swivelling of the elbow-piece g on the elbow-piece e permits adjustment to and from the sides of the head. Set screws f fix each joint in position after adjustment. In a modified form both elbow-pieces are arranged inside the wall of the resonator instead of outside.
Patent GB-1011487-A (GB)
Title: Torsional delay line transducer
IPC: H03H9/13
Filed: 1963-05-06
Abstract: 1,011,487. Electromechanical delay lines. INTERNATIONAL BUSINESS MACHINES CORPORATION. May 6, 1963 [May 7, 1962], No. 17738/63. Heading H3U. A transducer for a torsional-mode electromechanical delay line 15 comprises a pair of magnetostrictive strips 11, 13 which undergo longitudinal stresses of opposite sign upon application of a signal pulse to winding 19 whereby a twisting force is applied to the line 15. The strips 11, 13 are biased in opposite directions by a magnetic field which extends around a closed circuit of entirely magnetic material. As shown, the field is provided by magnets 23, 25. In a modification, a single magnet is provided and the delay line provides the return magnetic path. In another modification, the strips are permanently magnetized and are joined together at their ends remote from the delay line. The field causes either an expansion or a contraction of both strips. The signal field, which is in the same direction in the two strips, increases the contraction or expansion in one strip and decreases it in the other. The single winding shown may be replaced by two series windings one on each strip. The ends of the strips extend through a container 17 of damping material. The delay line may have a flat spiral configuration and the output transducer may be similar to the input transducer.
Patent GB-856399-A (GB)
Title: Method of preparing borazoles
IPC: C07F5/00
Filed: 1959-05-25
Abstract: A substituted B-tris-amino-borazole having at each of its six nitrogen atoms an alkyl group comprising at least 4 carbon atoms, a cyclohexyl group, a cyclopentyl group or a tetrahydronaphthyl group is prepared by reacting a boric acid alkyl ester whose alkyl groups comprise 1 to 5 carbon atoms with a primary aliphatic amine whose alkyl group comprises at least 4 carbon atoms, or with cyclohexylamine, or with cyclopentylamine, or with tetrahydronaphthylamine, the amine present amounting to not substantially more than two moles per mole of boric acid ester (not counting any boric acid ester which is eliminated in the form of an azeotropic mixture with the alcohol liberated in the reaction). Preferably 1,5 to 2 moles of amine are used per mole of available ester.  When methyl borate is used, 4 moles thereof provide 1 mole of available ester, and with ethyl borate, 1,48 moles provides 1 mole of available ester, the excess ester forming an azeotrope.  The process may be operated continuously by introducing the reactants into a distillation column and removing the alcohol or azeotropic mixture of alcohol and borate ester from the top of the column and removing the B-tris-amino-borazole from the bottom of the column.  The products are useful fuel additives.
Patent GB-708290-A (GB)
Title: Improvements relating to electric circuits
Inventor: MONK MURRAY
IPC: G05B11/01
Filed: 1951-07-27
Abstract: 708,290. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd. June 26, 1952 [July 27, 1951], No. 17874/51. Class 38(3) [Also in Group XXXV] A reversible direct-current is supplied to a load 5, which may be the field or armature winding of a servo motor, from two power supplies 1, 2, which are connected respectively to grid-controlled discharge valves 3, 4, in such a manner that the difference of the valve-currents passes through the load. A signal voltage is applied to the grid of the valve 3 from a source S, the voltage-drop developed across a resistor 6 causing an increase of current through the valve 3 to lead to an equal decrease of that passed by the valve 4. In order to avoid degenerative feed-back the valves 3, 4, may be provided with screen grids which are each connected to the anode of the opposite valve, Fig. 2 (not shown). If the power supplies 1, 2, have appreciable regulation, the screen grid potential of either valve is increased when the valve passes more current: Resistors, each carrying the anode-cathode current of one of the valves, provide a constant bias potential for the valve 3, an increase of the current in one resistor being balanced by an equal decrease in the other, Fig. 3 (not shown). In order to reduce the power loss in the resistor 6 it may be connected to an auxiliary D.C. amplifier valve so arranged that an increase of current in the resistor biases the auxiliary valve positively and reduces the potential of the grid of the valve 4 which is connected through resistance to the anode of the auxiliary valve, Fig. 4 (not shown). The supply sources 1, 2, may be either A.C. or D.C. in character. Smoothing is not necessary if the sources are of rectified A.C.
Patent GB-219168-A (GB)
Title: Improvements in folding step ladders and the like
IPC: E06C1/16
Filed: 1923-07-11
Abstract: 219,168. Turner, W. C., and Boughton, P. W. July 11, 1923, Ladders.-Step ladders with sliding hinges have hinge-blocks pivoted to the tops of the stays and adapted to coact with sliding ways 7 fixed to the tops of a step portion.
Patent GB-560402-A (GB)
Title: Improvements in and relating to electroplating cylindrical articles
IPC: C25D5/08
Filed: 1942-12-17
Abstract: 560,402. Electroplating cylindrical articles. JONES, R. G. Dec. 17, 1942, No. 17925. [Class 41] Cylindrical articles to be electroplated internally, such as rifle barrels and engine cylinders or cylinder linings, are fitted with end caps 7, 8, of insulating material supporting internal anodes 5, Fig. 2, the lowermost end caps 7 being threaded to engage openings in the false bottom 2 of a tank 1, Fig. 1, through which electrolyte is circulated from a vessel 3. To facilitate coating up to the ends, conducting washers 10 are fitted temporarily on to the ends of the tubes.
Patent GB-151407-A (GB)
Title: Improvements in vehicle hoods
IPC: B60J1/08
Filed: 1919-07-18
Abstract: 151.407. Hall, F. H. July 18, 1919. Addition to 136,046. Hoods. - Folding hoods for vehicles, having side curtains attached to the edge of the hood and capable of being secured to the roof of the hood when not in use, as described in the parent Specification, are provided with longitudinal bands or straps secured to the hoop sticks, to which the curtains are attached. Fig. 3 shows bands 2 secured to the hoop sticks 4 and carrying the curtains 1. The curtains are preferably attached to the bands by two rows of stitching to prevent twisting of the band's. The separate bands may be replaced by the edges of the curtains, which in this case are folded over and hemmed, and attached directly to the hoopsticks.
Patent GB-1472852-A (GB)
Title: Treatment of textile articles
IPC: A41D1/10
Filed: 1973-04-13
Abstract: 1472852 Coating apparatus IWS NOMINEE CO Ltd 4 April 1974 [13 April 1973 2 July 1973] 18005/73 and 31451/73 Heading B2L [Also in Division Dl] A method of forming a durable crease in a textile article, such as a pair of trousers, comprises applying a line of a settable, preferably thermoplastic, viscous liquid adhesive along the inner apex of a temporary crease and hot pressing the folded article to fix the crease. An adhesive applicator, Fig. 1, comprises a knurled wheel 22, which may mesh with a second wheel to remove air bubbles from adhesive remaining on the wheel 22, communicating by a nozzle 12 with an adhesive reservoir 14, which may be a prepacked reservoir or a tube as available for domestic use. An adhesive dispensing machine, Fig. 4, for mounting on a table top 32 comprises an applicator 40, which is raised and lowered by a pedal acting through a chain 78 and a lever 74, securable by a knob 80, a head 28 incorporating a reservoir 34, and a belt conveyor 86 movable below a guide slot 99 for a trouser leg or other article. In use a trouser leg is creased, turned inside out and placed on the conveyor with the crease in the slot and the end of the leg away from the operator. The applicator is lowered when the guide 48 abuts the crease and the reservoir now communicates through passages 60, 64 with the nip of the wheels 58, 56, (Fig. 7). On starting the conveyor adhesive is dispensed to the trouser crease, excess adhesive passing up the interior of the applicator back to the reservoir together with air bubbles squeezed out at the nip between the wheels 56, 58. On completion of the application the trouser is turned outside out and the crease pressed to set the adhesive.
Patent GB-292563-A (GB)
IPC: H01J21/02
Filed: 1928-06-22
Abstract: 292,563. British Thomson-Houston Co., Ltd., (Assignees of Mitchell, L. E.). June 22, 1927, [Convention date]. Vacuum tubes.-A valve has a cathode 10, a control grid 12, an inner screening grid 30, an anode 11, and an outer screening element in the form of a grid 34 surrounding the anode, and connected to the inner screening grid. Both of the screening grids are at least as long as the anode, and the inner screening grid may be extended at the lower end as shown. An additional shield in the form of a washer 41 of a diameter at least equal to that of the outer screening grid, and with an opening of a diameter at least equal to that of the inner screening grid may be mounted at one or both ends, and the lower end of the inner shielding grid may be closed by a shield 46. Magnesium or other gettering material may be provided in a cup, not shown. Specification 230,011 is referred to.
Patent GB-997187-A (GB)
Title: Stabilization of high polymers
IPC: C08L101/00
Filed: 1962-05-11
Abstract: High molecular weight polymers of ethylenically unsaturated compounds, particularly halogen -containing polymers and polyolefins, are with stabilizer compositions containing by weight 25 to 75% of one or more organic acid salts or phenolates of lithium, sodium, potassium, magnesium, calcium, strontium, barium, zinc, cadmium, zirconium, tin, lead or manganese; 5 to 25% of one or more mono or disubstituted amides, substituted imines, or esters of amino acids; and 5 to 25% of a high molecular weight epichlorhydrin/diphenylolpropane condensate.  The stabilizers may also comprise 5 to 25% of a polyhydric alcohol having at least 3 hydroxyl groups, and up to 8% of sodium carbonate.  Specified polymers are polyvinyl chloride and chlorinated polyvinyl chloride, copolymers of vinyl chloride with vinyl acetate or vinylidene chloride, rubber hydrochloride, polypropylene and propylene copolymers.  The metal compounds may be derived from heptanoic, stearic, palmitic, oleic, linoleic, linolenic, ricinoleic, behenic, myristic and lauric acids, alkoxy fatty acids and C6- 12 alkyl phenols.  Specified nitrogen compounds are phenyl urea, diphenyl urea, diphenyl thiourea, 2-phenyl indole and esters of amino crotonic acid.  The stabilization of polyvinyl chloride with compositions comprising calcium stearate, zinc stearate, diphenyl urea and 2-phenyl indole, or barium octyl phenolate or octoate, cadmium octoate, epoxidized soya bean oil, epoxy resin and diphenyl urea is described. In examples, compositions comprising polyvinyl chloride, glyceryl monostearate, titanium dioxide and (I) calcium stearate, zinc stearate, diphenyl urea and 2-phenyl indole; (II) calcium stearate, zinc stearate, diphenyl urea, 2-phenyl indole, epoxy resin and pentaerythritol and (III) and (IV) calcium stearate, zinc stearate, diphenyl urea, 2-phenyl indole, epoxy resin and pentaerythritol, with and without sodium carbonate.
Patent GB-1352746-A (GB)
Title: Method and apparatus for soldering and tinning
IPC: B23K3/06
Filed: 1971-05-28
Abstract: 1352746 Soldering ELECTROVERT MFG CO Ltd 28 May 1971 [2 Nov 1970] 18157/71 Heading B3R In wave soldering or tinning flat workpieces, e.g. printed circuit boards with solder or tin rising upwardly through an elongated nozzle outlet to overflow as a standing wave having a gently curved upper surface at least part of the wave is covered by an inert gas to inhibit oxidation thereof. An insulated solder tank has a horizontal partition part way up the height of the walls, an electric resistance heater beneath the partition to melt solder or tin in the tank, a pump located in an aperture at one end of the partition and near the other end a rectangular opening from which extends upwardly a channel terminating in sloping flanges 18, 18<SP>1</SP>. Additional resistance heaters are arranged in the channel and a nozzle assembly 40 is arranged at the outlet of the channel, the assembly comprising side plates and front and back plates 42, 43 forming a nozzle 45. A further plate 51 forms with the plate 43 a nozzle 50 for inert gas supplied by a conduit 57 to a distributing pipe 55 in the nozzle. In operation the solder or tin is melted, the pump is operated to pump solder or tin from above the partition through the nozzle 45 to emerge as a gently curbing wave 35, inert gas is supplied through nozzle 50 to cover the wave 35 and printed circuit boards 65 are conveyed over the wave. The inert gas protects the wave and also the underside of the circuit boards.
Patent GB-813130-A (GB)
Title: Improvements in and relating to control systems for electric motors driving rolling mills
IPC: B21B37/46
Filed: 1956-06-12
Abstract: 813,130. Rolling. UNITED STATES STEEL CORPORATION. June 12, 1956 [June 23, 1955], No. 18173/56. Class 83 (4). [Also in Group XXXVII] Relates to means for preventing excessive tension on the leading end of a strip as it enters successive stands of a continuous mill, and for compensating for loss of tension on the trailing end as it leaves the stands. The first and second finishing stands of a rolling mill are driven by electric motors 3 and 4 having drooping speed characteristics, the no-load speed of the motor 4 being adjusted by means of field rheostats 6, 6a. A tachometer generator 5, driven by the motor 4, is shunted across a potentiometer 14 to which is connected a field winding 31 of an amplidyne 9. This machine supplies a motor 11 driving the adjusting member 10a of a potentiometer 10, the arrangement being such that, under idling conditions of the mill, the potentials at points 10a and 14a are maintained equal. The entrance of the strip into the first stand is detected by a relay 21 which is responsive to the current drawn by motor 3 and has a time-delay device 21<SP>1</SP>. Contacts 21a close to energize relay 33 whereby the difference of voltages derived from the potentiometer 10 and the machine 5 are applied to the field winding 27 of a field regulator machine 7. Thus, an incremental voltage is provided for increasing the excitation of the field winding 23 of the motor 4 which decelerates until the difference voltage across the winding 27 is removed. Whilst the speed of the motor 4 is changing, the primary voltage of transformer 30 also varies to energize winding 29 of the machine 9 which is connected to an antihunting winding 26 on regulator 7. When the strip enters the second stand, current-responsive relay 22 is energized to complete a circuit for relay 34 whereby relay 33 is de-energized to take the supplemental field-control means for motor 4 out of operation. Relay 34 also closes contacts in series with relay 35, and relay 22 operates contacts 22b for bringing into operation similar speed-control means for the motor driving the third stand. The motors driving the several stands are not only decelerated as the leading edge of the strip approaches them, but a similar speed adjustment is effected as the trailing end leaves the next preceding stand. When the trailing end of the strip leaves the first stand, relay 21 is de-energized so that relay 33 is again energized through contacts 21b, 35a, the former being shunted by self-holding contacts 33g. The second energization of relay 33 again brings into operation the supplemental speed control means to reduce the speed of the motor 4. The relay 22 is de-energized when the trailing end of the strip leaves the second stand, so restoring the control circuits for the motor 4 to their starting condition. The relays 21, 22 may be replaced by other signalling devices.
Patent GB-733694-A (GB)
Title: Improvements in or relating to electric discharge devices
Inventor: GOLD WILLIAM ALEXANDER
IPC: H01J17/34
Filed: 1952-07-18
Abstract: 733,694. Thermionic valves. STANDARD TELEPHONES & CABLES, Ltd. July 18, 1952, No. 18212/52. Class 39 (1). In a discharge tube such as a thyratron, the cathode is not connected into the main anodecathode circuit until it has attained a predetermined temperature, when it operates a thermally controlled switch within the envelope. The switch 6 is heated by the cathode heater 4, and when the correct operating temperature is attained, the switch contacts close, completing the H.T. circuit between cathode 5 and anode 2. Fig. 2 (not shown) is a similar tube having a directly heated cathode and a screen grid. Fig. 3 (not shown) is a practical embodiment, the switch comprising a bi-metal strip.
Patent GB-246037-A (GB)
Title: Improvements in frames used for hanging up clothes
IPC: A47G25/44
Filed: 1925-07-16
Abstract: 246,037. Meynard, A. July 16, 1925. Coat and like hangers.-An adjustable device for hanging up clothes comprises a frame provided with branches which are composed of several elements connected by distortable means and by locking means for securing them in the adjusted position. As shown, the elements 1 are in contact at their upper part 2 and are connected by resilient steel blades 3 preferably inserted in notches in the upper parts of the elements. Non-metallic blades, such as leather strips, or hinges may replace, the steel blades 3. Metallic blades 4 secured to the lower faces of the elements are provided with a number of holes 5 to engage a finger or rod 6 on the adjacent element. A wing-nut 7 on the screwed end of the rod 6 locks the blade 4 in the adjusted position. Or the rod 6 may have an eccentric head formed by bending the end thereof to prevent unlocking. Instead of a number of holas, a continuous slot may be provided in the blade 4.