baber/WOPTO huggingface dataset:
Patent GB-811895-A (GB)
Title: Improvements in or relating to esters of -a-tocopherol
IPC: C07D311/72
Filed: 1957-01-25
Abstract: The invention comprises dialkylamino-acetic acid esters of a -tocopherol of which each of the alkyl groups contains 1 or 2 carbon atoms, physiologically acceptable salts thereof, and a process for the production of dialkylaminoacetic acid esters of a -tocopherol characterized in that a -tocopherol chloracetic acid ester is reacted with a dialkylamine.  The reaction may be effected by heating.  The a -tocopherol chloracetic acid ester may be obtained by heating a -tocopherol and the acid chloride of chloracetic acid in an oxygen-free atmosphere in an anhydrous solvent or by boiling a solution of monochloracetic acid with 2,5,6-trimethyl-4-hydroxy-phenyl diazonium chloride to form 2,5,6 - trimethyl hydroquinone - monochloroacetate-1, dissolving the last-mentioned material in an inert solvent and heating in an oxygen-free atmosphere the resulting solution with zinc chloride and phytol or isophytol.  Specific compounds mentioned are the dimethylamino-acetic acid ester of a -tocopherol, the hydrobromide and hydrochloride thereof and the tartaric acid salt, the citric acid salt, the phosphoric acid salt and the sulphuric acid salt thereof, the diethylamino acetic acid ester of a -tocopherol, the hydrochloride and hydrobromide thereof, and the tartaric acid salt, the citric acid salt, the phosphoric acid salt and the sulphuric acid salt thereof.  The preparation of these compounds is described in th examples.
Patent GB-766758-A (GB)
Title: Improvements in or relating to switching circuits for selecting sources of voltage
IPC: G05F1/14
Filed: 1955-01-31
Abstract: 766,758. Switching systems; systems depending on the use of transformers. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Jan. 31, 1955 [Feb. 2, 1954], No. 2841/55. Class 38 (4). In a tap-changing system or a transformer or the like 12 supplying variable voltage to a load, such as airfield lamps 13, as described in Specifications 721,112 and 724,637 the tuned circuit is now replaced by a resistor 6 in the common supply lead 7 to the coils 1, 2 of the tap-changing switches 8, 9 and these switches are provided with back contacts 15, 16 connected in series across the resistor so as to short-circuit it when the switches are de-energized. Full voltage is thus available for operating either of the switches 8, 9 when its corresponding control switch 3 or 4 is closed, the voltage being reduced to a hold-in value by the resistor 6 when the tap-changing switch has operated. Closure of the control switch associated with the other tapchanging switch connects the two coils in parallel, thereby diverting current from the coil of the first switch and causing it to drop out. This reinstates the short circuit on the resistor 6, so that full voltage is now available for operating the other of the tap-changing switches which, in consequence, responds and reinserts the resistor 6. To ensure that the first tap-changing switch remains " dropped-out ", it is arranged to interrupt its coil circuit by the action of dropping out. Thus it may mechanically trip its control switch to the " off " position, or may be have normally-open auxiliary contacts arranged in a holding circuit.
Patent GB-543698-A (GB)
Title: Improvements in window construction
IPC: B63B19/00
Filed: 1941-03-05
Abstract: 543,698. Windows. KEARFOTT ENGINEERING CO., Inc. March 5, 1941, No. 2981. Convention date, March 11, 1940. [Class 20 (iii) ] Rack and pinion mechanism controls the up and down movements of the co-planar central sashes 27, 32 of a four-sash window. The window-frame 1 is flanged and channelled to receive H-supports 4 for the fixed upper and lower sashes 8, 18. Three-sectioned continuous guide rails 22 for the movable sashes are fixed in the side frame 10. The upper sash comprises H-shaped side and bottom pane-enclosing members ; the bottom member 36 engages an upstanding ridge on the upper edge of the lower sash when the window is closed. Substantially co-axial pinions 37 are mounted on each side of the window frame, but in advance of the plane of the movable sashes, and are engaged on opposite sides by racks 34, 35 secured to the upper and lower sashes respectively. Operating handles 46 are mounted on the cross-member 26, or a handle may be provided for 39 operating a worm-wheel on a protruding end of the shaft 42. Universal joints may be mounted in this shaft adjacent to each pinion 37. The window may be fastened in the closed position by hand-wheels 52 the spindle-ends of which are tapered for pressing against the sloping upper end of the racks 34. Gaskets and weather stripping are fitted to afford water-tight joints.
Patent GB-398396-A (GB)
Title: Improvements in vehicular road surfaces
IPC: E01C5/02
Filed: 1933-02-02
Abstract: 398,396. Roads ; paving - blocks. HOBSON, P., The Cottage, Hobson Moor Road, Hollinworth, Cheshire. Feb. 2, 1933, No. 3162. [Classes 87 (i) and 107.,] A road surface is composed of a plurality of sandstone or gritstone sets having sawn side faces, or sawn side, upper, and lower faces, and arranged to abut closely against each other. By this means, the occurrence of open joints between adjacent sets is avoided and the road presents a continuous even surface of sandstone or gritstone. According to one construction, the sets 1, Fig. 7, are laid on a foundation 3 of concrete or cement which is spread over a bed 4 of asphalt. Each set is provided on two opposite sides with horizontal grooves 2 which are adapted to receive a filling of grouting of cement, concrete, bituminous or tar material. This grouting, which keys, adjacent rows of sets, is applied after the sets are laid through vertical grooves 5 formed in some of the sets. A modified form of set 6 is shown in side elevation in Fig. 4. In this construction, the grooves 7 are inclined and are provided on all four sides of the set. Additional grooves may be provided in the side faces of the sets to reduce the area of the contacting surfaces. A thin grout of cement may be applied to the finished surface and brushed into the minute cracks between adjacent sets.
Patent GB-1045552-A (GB)
Title: Improvements in or relating to chassis for supporting circuit elements
Inventor: PAGES ALIX
IPC: H05K7/14
Filed: 1964-01-24
Abstract: 1,045,552. Rack-mounted electrical equipment. COMMISSARIAT A L'ENERGIE ATOMIQUE. Jan. 24, 1964 [Jan. 25, 1963], No. 3177/64. Heading H1R. A chassis for supporting circuit components, which slides like a drawer in a framework, is of box-like form, the front, Fig. 1, comprising a rigid frame 1 provided with one or more handles 2, and the sides 3 being substantially rigid flat plates maintained mutually parallel by the frame 1, a rear panel 4, and by crosspieces 5 perpendicular to said plates and secured thereto by countersunk screws 11. The rear panel 4 is screwed to two transverse bars 9, which are axially screwed, riveted, &c. at 10 to sides 3; the removal of two screws, &c. 10 allows panel 4 to be pivoted on the other two. An intermediate panel 12, fixed to vertical bars 13 which are screwed to sides 3, divides the chassis into two compartments. The front compartment may contain a plurality of small drawers which slide on T-shaped runners 16, each small drawer comprising a rigid front plate 19 and a rear plate joined by four rods 21 holding support members 23, 24 (Fig. 5, not shown) for printed circuit boards 26 and connectors 27 therefor. The sides, top and bottom of each small drawer may be closed in by sheets 25, 28, which may be perforated, and the drawer is held in place by a rod having a knob 15 on its end outside the drawer, and a threaded portion on its other end which engages a threaded seating integral with intermediate panel 12. In Fig. 7 (not shown) the small drawers are dispensed with, boards 26 being mounted directly in the front compartment. The rear compartment comprises current supply members 38. The top and base of the chassis are covered by a protective grid 31. A plurality of chassis mounted in a framework 35, Fig. 2 (not shown), are cooled by air forced upwards by bellows and returned down passages between the sides of the chassis and the louvred sides of the framework 35.
Patent GB-120327-A (GB)
Title: Improvements in Web Feeding Mechanism.
IPC: B41F13/06
Filed: 1918-02-22
Abstract: 120,327. Hoe & Co., R., (Hoe & Co., R.). Feb. 22, 1918. Set-off, preventing.-The bars or rollers which guide and direct a freshly printed web are provided with anti-friction devices which can move relatively to the bar &c. both in a forward and a sideways direction so as to form an antifriction surface adapted to support the web by its imprinted margins to prevent set-off. Fig. 1 shows a turning bar 1 for a printed web W, provided with a row of balls 2 arranged in a spiral groove 3 in the bar so as to engage the web margin. The balls project above the surface of the bar and are carried by a trough 4 secured in the groove 3. A double row of balls may be employed or the balls may be arranged to form alternate sets of three and two balls held in the groove of the bar by a perforated cover plate 8, Fig. 5.
Patent GB-177913-A (GB)
Title: Improvements in and relating to bread cutting machines
IPC: B26D1/29
Filed: 1921-01-26
Abstract: 177,913. Blackledge, J. Jan. 26, 1921. Cutting slices in succession. - In a breadcutting machine wherein the loaves are held in vertical wooden shoots and gravitate towards a horizontal revolving disc having a slicing knife mounted thereon, the extremities 5 of the shoots 3 are formed as metal casings and pass through orifices in the spider 9 which, together with the spider 10, carries the shaft 2 of the disc 1<a>. A curved knife 6 is used, the slot 8 in the disc 1<a> through which the slices pass being oblique and similarly curved. The disc is provided with a fly-wheel rim 1<b>, and the slice thickness may be varied by inserting packing-pieces between the knife and the disc.
Patent GB-912121-A (GB)
Title: Plain bearings
Inventor: FORRESTER PETER GARNETT
IPC: C08L27/18
Filed: 1959-01-29
Abstract: A composition for use as a plain bearing, consists of a mixture of acetal resin, by which is meant polyformaldehyde, and one or more solid substances.  It is preferred that the proportion of solid substance is between 10 and 60% by volume of the whole; polytetrafluoroethylene, bronze, lead, graphite, molybdenum disulphide lead-di-iodide, boron nitride, kieselguhr, cupric oxide, asbestos fibre and glass fibre are specified.
Patent GB-471669-A (GB)
Title: Improvements relating to temperature and other regulating means
IPC: G05B11/50
Filed: 1936-02-04
Abstract: 471,669. Fluid-pressure servomotorcontrol systems. REAVELL & CO., Ltd., and HUMBY, A. J. D. Feb. 4, 1936, No. 3332. [Class 135] In the regulation of physical values such as temperature, humidity or calorific value, which can be measured as electromotive force or as variations of electrical resistance, a potentiometer or allied instrument is combined with a fluid relay of the pivoted jet type described in Specification 224,655, [Class 135], through a cam on the instrument spindle and a leverage system controlling the position of the pivoted jet. The pivoted jet relay may operate the control means directly or through a second relay provided with a device to prevent hunting. Movement of the slide wire contact of the potentiometer to restore a balance, disturbed for instance by a temperature-change of the resistance in one of the legs, is effected automatically, according to the galvanometer deflection, by any suitable relay. A cam 2 on the potentiometer spindle 1 thus controls, through a pivoted arm 4, pusher 7, and cranked lever 8, the position of pivoted jet 11 according to the controlling temperature, a rise in temperature increasing the fluid pressure (lowpressure air) transmitted to (say) pipe 16, and lessening it in pipe 15. The differential pressure, by a diaphragm 19, moves the pivoted jet 21 of a second relay, increasing the oil pressure (supplied at 33) on one side, and lessening it on the other, of a piston 35 operating the steam or gas valve 36 to be controlled. A piston 27 with a byepass and centralizing springs 28 is provided in the line between the jet 21 and the servo-piston 35, and connected to the anchorage of spring 22 acting on jet 21, in order to prevent hunting. To set the apparatus for different temperatures, the arm 4 is adjusted relatively to the cam 2 by rotating the bush 6 which may be provided with a scale.
Patent GB-434175-A (GB)
Title: Improvements in or relating to apparatus for treating stockings mounted on forms
IPC: D06F73/00
Filed: 1935-02-01
Abstract: <PICT:0434175/IV/1> <PICT:0434175/IV/2> Stockings &c. are finished on forms which are arranged side by side on a support 4 to which the heating medium is supplied by a pipe 7, and can be turned down into horizontal position in which they are damped by liquids from jets 10. The supply of liquid is turned on when the forms reach the position L and turned off when they reach the position L<1> by connections to the rotary support 4.
Patent GB-955577-A (GB)
Title: Tool for driving anchoring members, such as nails into hard materials
IPC: B25C1/14
Filed: 1962-01-30
Abstract: 955,577. Cartridge-operated fastener driving tools. ANSTALT FUR MONTAGE-TEOHNIK. Jan. 30, 1962 [Feb. 2, 1961], No. 3409/62. Heading B4C. In a cartridgeoperated tool, e.g. as described in Specification 901,023, the arrangement for the expansion of exhaust gases is modified by providing two sets of radial bores 22, 6 in the guide tube 1 leading to the annular expansion chamber 23. In addition to the forward set 22 which are uncovered when the head 13 of the plunger 14 is in its forward position after firing, a second set 6 is located at the rear end of the chamber 23. The gases are directed rearwardly through the bores 22, through the chamber 23 and then rearwardly through bores 6 into the space between the unit wall of the guide tube 1 and the shank 2 of the recoil damping piston 3. The rear edge 7 of the cartridge-supporting piston head 3 is of sharp-edged construction to strip away any powder residues on the inner wall of the guide tube 1 when the piston is withdrawn for re-loading.
Patent GB-510458-A (GB)
Title: Improvements in tubular electric incandescent lamps
IPC: H01K1/46
Filed: 1938-02-03
Abstract: 510,458. Electric incandescent lamps. BARASCH, I. Feb. 3, 1938, No. 3418. [Class 39 (ii)] Tubular lamps of the kind wherein the filament is connected by leading-in wires to a single laterally extending contact cap are provided with one or more laterally extending supporting members additional to the cap and affixed to the lamp envelope. In the example the contact cap 1 is fixed near one end of the lamp and a similarly shaped dummy cap 2 is mounted over a sealing- off nipple 3 near the other end. The dummy cap 2 may be made entirely of insulating material, and may be inserted in a live lampholder, for example when the lamp is used in a changeable sign. The contact cap may be disposed intermediate the ends of the lamp, with one or more supporting caps secured upon the parts of the bulb at each side of it. The supporting members may be of less length and greater cross-section than the contact caps, and disposed so that they can engage the 'tops of suitably disposed lampholders; they may consist of resilient material, such as rubber.
Patent GB-1423505-A (GB)
Title: Electrical equipment assemblies
IPC: H05K7/10
Filed: 1972-02-04
Abstract: 1423505 Component assemblies GENERAL ELECTRIC CO Ltd 2 Feb 1973 [4 Feb 1972] 3432/75 Divided out of 1407022 Heading H1R In electrical equipment assembly e.g. racks for telephone equipment printed circuit component modules e.g. 1 are mounted on guides 2 of rack 3 to slide between a fully inserted position (Fig. 2) and a withdrawn position (Fig.1); the guides being cantilevered out from a vertical rear mounting plate 4 secured to the rack. On the latter there are provided for each guide six multiway plug units 6 mating with a corresponding socket 7 on plate 8; the plugs and sockets being held together by screws 9. The sockets are compared to components of the module by flexible multiway flat cable 10 clamped at 11 to module 1 and wired to individual pins of sockets 7 with intermediate support by resilient plastic clamp 12 carried by plate 8, so that free movement of the module is permitted between its positions without disconnection. In the first position the cable lies under and flush with the module parallel to the guide and in the second position it flexes with the vacant space 13. Module 1 carries latches 14 engaging strikers to retain the module in its first position, and may be unscrewed with sockets 7, to permit total withdrawal of the module and cable (Fig. 3 not shown), which may be plugged into or unplugged from the rack. The sockets 7 are mounted on plate 8 with a small degree of play to accommodate manufacturing tolerances, and the plugs and sockets are located together by dowel pins and holes. Parent Specification 1,407,022 is referred to.
Patent GB-481779-A (GB)
Title: Improvements in water-cooled high-pressure mercury-vapour discharge lamps
IPC: H01J61/52
Filed: 1937-02-05
Abstract: 481,779. Discharge lamps. GENERAL ELECTRIC CO., Ltd., and HARRIS, N. L. Feb. 5, 1937, No. 3483. Drawings to Specification. [Class 39 (i)] The electric supply to a high-pressure lamp, which is cooled by a fluid stream, is interrupted by a switch which is adapted to be operated when the rate at which the stream flows is below a predetermined minimum by the difference of pressure between two points in a channel through which the said stream, or a stream in parallel therewith, flows. The switch may be a mercury U-tube provided with contacts; a Bourdon gauge, a flexible diaphragm or a Venturi meter may be used. In one form, the lamp is housed within a cooling jacket which is partly closed by a perforated diaphragm. Specification 470,770 is referred to.
Patent GB-740208-A (GB)
Title: Mask for filtering air containing fine particles such as dust
IPC: A41D13/11
Filed: 1954-02-05
Abstract: 740,208. Respirators. SOC. D'EXPLOITATION DES PLASTIQUES. Feb. 5, 1954 [Feb. 7, 1953], No. 3487/54. Class 81(2). A respiratory mask comprises a pouch made of elastic porous synthetic plastic filtering material, the edge of the pouch being bent over itself to form a thickened rim. The bent-over portion is secured along its major portion but is left unsecured in the region of the junction of the wearer's nose and cheeks. The pouch is made from a sheet of microporous elastic synthetic plastic material which is folded along a line A and stitched or stuck along a line B. The edge of the mask is turned in to form a bead 3 which is stitched or stuck except for unsecured portions 3a which, when the mask is worn, fit into the hollows between the nose and cheek.
Patent GB-850737-A (GB)
Title: Improvements in or relating to circuits for determining the characteristics of pulsetrains
Inventor: WARD JOHN JOSEPH
IPC: H03K25/00
Filed: 1957-02-01
Abstract: 850,737. Electric tests. RANK CINTEL Ltd. Jan. 31, 1958 [Feb. 1, 1957], No. 3543/57. Class 37 In a circuit for measuring the peak amplitude of pulses in a pulse train, the pulses are applied with positive polarity to the control grid of a cathode follower valve 2, Fig. 1, whose output is applied via a diode 5 to charge a capacitor 6, the potential at the cathode of diode 5 being arranged to be initially substantially the same as that at the cathode of valve 2. The potential on capacitor 6 rises to the peak value of the applied pulses and is applied to a cathode follower valve 7, the change in potential at the cathode of valve 7 being an indication of the peak potential of the pulses applied at terminal I and being measured at terminal 11. To discharge the capacitor a high resistance 8 is connected between the high potential terminal of the capacitor and the junction of resistors 9, 10, forming the cathode load of valve 7. The circuit may be modified to measure the number of pulses in an applied pulse train, Fig. 2, the grid resistor 4 being connected to the junction of resistors 9, 10, instead of to the earth line. As the first pulse is applied to the grid of valve 2 the capacitor 6 receives a charge dependent upon the pulse amplitude and valve 7 passes a current proportional to the pulse amplitude, the potential at the junction of resistors 9, 10, rising proportionately. The bias potential applied to the grid of valve 2 via resistor 4 is therefore increased and by suitable choice of values for resistors 8, 9 and 10, it may be arranged that the resultant rise in potential at the cathode of valve 2 is equal to the rise in potential on capacitor 6. When a succeeding pulse is applied to the grid of valve 2, the diode 5 conducts for the full duration of the pulse and adds a charge to the capacitor 6 which is substantially equal to that added by the first pulse, the process being repeated for each pulse in the train. The potential at the cathode of valve 7 therefore gives a measure of the number of pulses in a train and may be measured by a meter 11. A switch 14 is provided to discharge the capacitor 6 before each measurement, and may be an electronic switch arranged to operate automatically.
Patent GB-113679-A (GB)
Title: An Apparatus for the purpose of the Direct Conversion of the Energy of Motion of a Dielectric into Electric Energy, and Conversely for the Conversion of Electric Energy (of the right frequency) into the Motion of Mass.
Inventor: YOUNG ALFRED
IPC: H02K44/04
Filed: 1917-03-10
Abstract: 113,679. Young, A. March 10, 1917. Systems; electro - magnetic means.-The electric generating apparatus described below is stated to be reversible, converting electric energy into energy of motion of oil, etc.; it may be used as an oil pump ; the apparatus shown in Fig. 1 is then duplicated, the secondary winding of the second apparatus being supplied with the alternating current generated in the first apparatus, imparting motion to the fluid in the second apparatus. In the generating apparatus, a dielectric fluid, such as air, oil, or steam, is caused to flow through a chamber c subjected to an alternating magnetic field and having parallel faces acting as condenser plates which are connected together through a circuit of low resistance and of such inductance that resonance is set up therein; the circuit may be formed of insulated strips of copper or aluminium and may act as the primary d of a transformer, the secondary e being connected to leads f, g. The fluid is conveyed by a pipe a to a number of small tubes b spaced circularly with their ends fitting into the chamber c, the fluid being led away by tubes b'. The cham. ber c is built up of two series of inner and outer rings. The apparatus may be self-exciting; a condenser may be connected to the ends of the primary winding at starting, or an alternating exciting field may be produced by external current. In the Provisional Specification, water is mentioned as a dielectric.
Patent GB-736238-A (GB)
Title: Improvements relating to in-situ concrete piles
IPC: E02D5/18
Filed: 1953-02-09
Abstract: 736,238. Pile walls. SOIL MECHANICS, Ltd., and GLOSSOP, R. Feb. 9, 1954 [Feb. 9, 1953], No. 3612/53. Class 68(2).  A wall is formed by constructing cast-in-situ concrete piles 1 which are adjacent to or contact one another, a heavy grout 3 i.e. one having a high cement content, being forced under pressure into the space between adjacent piles, the grout displacing the soil and not penetrating it. The grout may be forced through tubes which are driven into the ground and provided at the bottom with one or more openings. Alternatively each tube may be closed by a plug which is left behind in the ground when the tube is raised.