baber/WOPTO huggingface dataset:
Patent GB-811483-A (GB)
Title: A thermally operated electric switching system
Filed: 1957-04-05
Abstract: 811,483. Switching systems; automatic temperature control systems. SYLVANIA ELECTRIC PRODUCTS Inc. April 5, 1957 [April 30, 1956], No. 11245/57. Class 38 (4). [Also in Groups XXXVI and XL (c)] An electric switching system comprising a P-N junction 10 connected in a series circuit with a temperature responsive element such as a thermistor 12 at a semi-conductor 100 and a relay operating winding 14 has the P-N junction 10 connected in the reverse direction such that as the resistance of the thermistor 12 or the semi-conductor 100 decreases the voltage across the P-N junction 10 increases with, initially, only a small increase of current in the series circuit. At a given potential difference across the P-N junction 10 the junction breaks down with a consequent pronounced increase in the current flowing in the circuit, this current being sufficient to fully energize the operating coil 14 of the relay. Thus, in the embodiment shown in Fig. 1, the system may be used to control the temperature of the heater 18 which may be associated with the thermistor 12. The P-N junction 10 may be placed so as to be affected by any light radiation from the heater 18. Again, the breakdown point of the P-N junction may be governed by the injection of carriers into the circuit. In the embodiment shown in Fig. 5, the current surge which occurs when the junction breaks down causes an injection by way of transformer 104 at the point contact 102 of the semi-conductor 100 thus accelerating the operation of the system. The P-N junction may be provided with a tapping for voltage injection.
Patent GB-615418-A (GB)
Title: Control apparatus for controlling the operation of drive means for placing a useful load in a desired position
IPC: G05D3/12
Filed: 1945-05-03
Abstract: 615,418. Electric control apparatus. YAR. DENY, M. N. May 3, 1945, No. 11257. [Class 40 (i)] Apparatus for controlling a reversible motor so as to place a load in a selected position, includes a contact element which is driven by the motor to search for a gap between two conductors of a control element and is characterized by the provision of a switch which reduces the speed of the motor for a limited movement after reversal. In one arrangement, Fig. 1, contact arms 15 mounted on a shaft 83 engage conducting members 1, 2 of the control elements, any number of which may be provided. The shaft 83 carrying the contact members is driven by a series wound motor with an armature 20 and reversing windings 21, 22 normally relays 23, 24 are operated and the motor is disconnected from the supply terminals 26, 44. When a particular element is connected by a switch 31, the contact arm and a conducting member short-circuit the associated relay which falls back and completes a circuit for the corresponding winding 21 or 22, in series with the armature 20 to drive the motor and the contact arm towards the gap 3 between the conducting members 1, 2. When the contact element passes the gap, the relays change over, the motor reverses and the metal segment 59 of a rotary switch temporarily engages a brush 61 to shunt the armature by the idle field winding and the resistance 64 in series. When the contact arm bridges the conducting members, the motor is disconnected and stops. Supplementary means to prevent hunting are provided in the form of a frictional coupling 82 with stops to limit the displacement and tongues 81 of rubber which engage the disc 66 and which increase their normally small resistance during a reversal. The edges of the gap may be raised, Fig. 12. The rotary switch comprises a shaft 58 carrying the conducting segment 59 and an insulating segment 60 of larger diameter which frictionally engages the disc 66. A brush 61 engages the segments. The disc 66 does not engage the conducting segment 59 and the switch turns only whilst the insulating segment is engaged after reversal. A spring 54 holds the edge of the insulating segment against the disc. Modifications. The rotary switch may comprise a disc 90, Figs. 2 and 4, frictionally engaged by the disc 66 but limited in rotation by two stops 91. When either stop is engaged a contact is opened and the circuit including the contacts is closed only during the traverse of the switch between the stops during a reversal. The resistance 64 may be replaced by the coil of an electric bell vibrator, the arm of which may interrupt the main current supply to slow the motor down. Alternatively, the interruptions may be produced by a switch controlled by a governor geared to the shaft. The Specification includes a number of examples including series wound and shunt wound motors. The motors can be operated by either A.C. or D.C.
Patent GB-130306-A (GB)
Title: Improvements in or relating to Stethoscopes.
Inventor: POLLARD JOHN DUSTIN
IPC: A61B7/02
Filed: 1919-05-07
Abstract: 130,306. Pollard, J. D. May 7, 1919. Stethoscopes. - A stethoscope comprises a sounding chamber 4 across the mouth of which is adjustably secured an elastic extensible diaphragm 12 adapted to be brought into complete contact with the human form. The securing means consist of rings 6, 7 pivoted links 8 cooperating with lugs 9, springs 10, and nuts 11.
Patent GB-236006-A (GB)
Title: Improvements in sheet delivery mechanism of printing machines
IPC: B65H29/34
Filed: 1924-05-08
Abstract: 236,006. Evans, A. B. May 8, 1924. Delivery apparatus; associating - apparatus. -Sheets are delivered from printing-machines by grippers on chains b, or by strippers and tapes, and are forwarded to a position in which the sheets are stopped in succession by stops c, and finally two or more associated sheets are forwarded by other mechanism, such as tapes n and rollers p, from which the sheets are removed by flyers e which reverse the associated sheets and deposit them on a table g. By interrupting the delivery of the sheets at an intermediate station, they may be observed in this position, and owing to the reversal of the associated sheets, some of the sheets can be observed on both sides. The stops c preferably deposit the sheets on a grid d supported by lever arms f<2> which are operated by a lever i, cam j, and link h to deposit the associated sheets on the tapes n forming part of the final delivery apparatus. The chains b may be driven at variable speed arranged to slow down the grippers when they reach the stops c. The .second part of the delivery apparatus may be replaced by other known forms of delivery apparatus, such as a reciprocating carriage.
Patent GB-115292-A (GB)
IPC: F16D11/06
Abstract: 115,292. Rapson, F. L. May 15, 1917. Clutches, claw. - In pivoted-pawl clutches for use with the lifting-jacks described in Specifications 108,275, 108,822, and 112,551, [all in Class 79 (iii), Motor-vehicles, Arrangement &c. of parts of], end for other purposes, pawls h carried by the driven member fare normally pressed against stops o by springs m and are pressed into recesses c in the driving- member b by bringing a stirrup k into contact with lugs j on the pawls. An axially-sliding cone may replace the stirrup.
Patent GB-358875-A (GB)
Title: Improvements in or relating to cinematographic cameras and projectors for colour cinematography
IPC: G03B33/08
Filed: 1930-04-11
Abstract: 358,875. Colour kinematography. KINGSTON, A. W., 9, Newman Street, Oxford Street, and BOOTH, M. O. HAWORTH-, 15, Great Stanhope Street, Mayfair, both in London. April 11, 1930, No. 11566. [Class 97 (i).] In a colour filter disc comprising a number of filters, the amount of light passing through one or more of the filters is variable independently of the others by means of an adjustable auxiliary filter section. As shown, the disc comprises filters 14, 15, 16 carried by a framework 13 secured to a cup-shaped member 21, itself secured to a boss 20 carried by a shaft 11. Auxiliary filter blades 18 comprising filters carried by frames 22 are provided at each end of each filter, and their frames have toothed sectors gearing together and to long pinions 24 so that the blades may be finely adjusted about pivots 23, over the ends of the filters, or turned behind the divisions between the filters. The pinions 24 are rotatable by spindles 25 which have knurled heads 26 and carry pointers 34 travelling over index marks ; the pinions may engage teeth in the member 21 to prevent rotation except when they are moved axially against the action of springs 27 housed within them. The camera front may have a movable or removable plate 32 covering an aperture giving access to the heads 26. In a modification, the auxiliary filter blades may be radially adjustable from behind the central part of the filter disc.
Patent GB-546138-A (GB)
Title: Improvements in or relating to attendance-checking systems for watchmen
IPC: G07C1/20
Filed: 1940-07-12
Abstract: 546,138. Locks. STEVENS A. H. (Dudley Lock Corporation). July 12, 1940, No. 11657. [Class 44] [Also in Group XIX] A watchman's tour' system comprises a set of wall boxes 2 Figs. 2 and 8, and a tour key 5, Fig. 6 carried by the watchman and insertible into the boxes only in a prescribed order, the boxes each having means to change plungers 30, Fig. 7 mounted in the key to adapt them to suit only the next wall box to be visited. The first box, Fig. 2 of the system, may have signal actuating means and an alarm box 50, Fig. 12 without means for changing the key plungers, may be located at apart of the tour so that the watchman may give an alarm if compelled by burglars or others to continue his normal tour, without arousing suspicion. The watchman's key has a cylinder lock 24, Fig, 7 in a round body part 20 with a horizontal slot 23 engageable over a standard key part 34 fixed to the back plate of each box of the tour, to release the tour key for rotation in each box. Above the plungers 30 of the tour key is a barrel 32 having groups of apertures 33 and which is fast with a ratchet 28 Fig. 8. This ratchet is advanced one tooth by engagement with a tooth 27 on a disc 26 as the key is turned in the box and the consequential displacement of the barrel 32 prepares the plungers 30 for the next box. The boxes have ward ribs 18, Fig. 4 with sloped ends to depress the plungers as they enter. In place of ribs, rings spaced apart by washers clamped in position by screwed rings may be employed. Each box has also a set of plungers 72 to engage recesses 73 in the front end of the tour key to permit use only of the correct key. The signal box is fitted with a mutilated gear wheel 11, Fig. 2, rotated by the tour key to move a toothed sector 10 of a wheel 7 and a spring driven train, which actuates contacts 8 of a signal transmission system. The burglar alarm box is without wards for the plungers 30 and its key member 34x Fig. 12 is mounted in a rotatable member 51 which is turned by the tour key to close a circuit between a conducting strip 62 on an insulating rim 60 of the member 51 and a contact 63 fixed on the back of the box.
Patent GB-181559-A (GB)
Title: Improvements in or relating to implements for truing crank-pins and effecting like operations
IPC: B23B5/06
Filed: 1921-04-22
Abstract: 181,559. Kane, R. W. H., and Badcock, F. April 22, 1921. Portable turning-apparatus. - In a tool for trueing crank-pins &c., a divided annular frame 4 having its two parts bolted together at 8 is provided with radially disposed guide-members 48 and a cutting tool 34 which are grooved to receive the heads of adjusting screws 30 and are secured against lateral displacement by side plates 36. The end face 52 of the tool is ground perpendicular to its shank faces, clearance being obtained by slightly off-setting the tool from a radial position. The operating handle 54 is preferably arranged in rear of the cutting-tool.
Patent GB-1147583-A (GB)
Title: Improvements in or relating to netting, gauze and like reticular materials
IPC: B21F27/00
Filed: 1968-03-11
Abstract: 1,147,583. Netting. TREFILERIES LEON BEKAERT, P.V.B.A. 11 March, 1968 [24 March, 1967], No. 11744/68. Heading D1K. [Also in Division H2] In a strip of netting, gauze or like reticular material, for indicating the presence of a buried cable (see Division H2), the length from end to end increases progressively from one side to the other. When extended with the shorter side in a straight line its surface undulates. The netting is preferably a twisted wire net, but may be made of natural or synthetic fibres, glass or plastics.
Patent GB-1040711-A (GB)
Title: Circuit breaker and panelboard
IPC: H01H23/06
Filed: 1963-03-25
Abstract: 1,040,711. Automatic circuit breakers; switchboards. FEDERAL PACIFIC ELECTRIC CO. March 25, 1963 [April 3, 1962], No. 11755/63. Heading H2B. An electric distribution board comprises a rectangular metal enclosure 20 having in one end wall 30 an opening 86 through which incoming cables 80, 82, 84 pass; a plurality of bus-bars 52, 54 and means 44 for mounting a plurality of branch circuit breakers 76 thereon; and a multipole main circuit breaker 100 have load terminals 106 and line terminals 114 all of which are substantially equidistant from wall 30, the load terminals being aligned with and secured to terminal end portions 69, 70 of the bus-bars 52, 54. The enclosure 20 is completed by a trim panel 34 and an overlapping lid 38 (Fig. 3, not shown), and has knockouts in its walls for the passage of branch conductors. The circuit breaker 100 (Figs. 4-10, not shown), comprises a handle 164 coupled by a toggle linkage 172, 178 to an actuator 200 latched and pivoted to a moving contact lever 182 in each pole. Under overload a bi-metal 190 attached at one end to contact member 182 moves an armature 218 to disengage from an ambient temperature compensating bi-metal 212 attached to actuator 200 thus releasing to toggle linkage and allowing the contacts to open under springs 254. Each moving contact comprises two parallel side plates 182, each covering two contacts 184 engageable with four fixed contacts 186 independently mounted on two spring-urged plates 242, 244 and separated by an insulating cross 194.
Patent GB-1008098-A (GB)
Title: Lasts for the manufacture of shoes
Inventor: HENDRY GORDON DERRICK
IPC: B29C39/00
Filed: 1961-03-30
Abstract: A shoe last is cast from a thermosetting, epoxide or polyester resin composition.  The epoxide resin may be prepared by the interaction of bisphenol A and epichlorohydrin under alkaline conditions.  Curing agents-e.g. polyamines or their derivatives, polyamides, carboxylic acids or anhydrides or their derivatives, metal fluoborates, or boron trifluoride complexes; accelerators-e.g. phenols, carboxylic acids, or tertiary amines; plasticizers and extenders-e.g. coal tar fractions, "Thiokols" (Registered Trade Mark), vinyl polymers, esters or lactones; reactive diluents-e.g. monoglycidyl ethers of phenols, mono- or diglycidyl ethers of alcohols and cycloaliphatic epoxides; and fillers and reinforcing materials-e.g. slate, metal or marble powder, aluminium oxide, vinyl polymers, phenol or polyester resins, glass fibre or flakes, glass fibre mat or cloth, or metal rods, gauze or wire-may be used.  The polyester resin may be prepared by the reaction of one or more glycols with an a : b -ethylenically unsaturated dicarboxylic acid or anhydride, which may be mixed with one or more saturated dicarboxylic acids or anhydrides. The resultant polyester may be dissolved in suitable ethylenically unsaturated monomers and cured with an organic peroxide catalyst at room temperature in the presence of a metallic salt of an organic acid, tertiary amines, quaternary ammonium salts, or mercaptans, or at an elevated temperature.  The cured compositions may be made more flexible by the addition to the uncured composition of saturated glycols or acids, or dimers of unsaturated acids.  Chain terminators, e.g. benzyl alcohol or butanol, may be added. Fillers and reinforcing materials as specified for the epoxide resin may be used. Specification 481,053 is referred to.
Patent GB-386954-A (GB)
Title: Improvements in hydraulic brakes
IPC: F16D65/22
Filed: 1931-04-21
Abstract: 386,954. Fluid - pressure brakes. BUGATTI, E., Molsheim, Bas-Rhin, France. April 21, 1931, No. 11795. Convention date, April 22, 1930. Void [Published under Sect. 91 of the Acts]. [Class 103 (i).] An hydraulic brake comprises two shoes 2, 21, actuated by pistons of different diameters, the piston 6 having the larger diameter operating the shoe 2 which tends to be moved into inoperative position by the normal rotation of the drum.
Patent GB-419584-A (GB)
Title: Improvements in or relating to pneumatic tyred vehicle wheels
IPC: B60C23/00
Filed: 1934-04-19
Abstract: 419,584. Tyre valves. SOC. ITALIANA PIRELLI, 21, Via Fabio Filzi, Milan, Italy. April 19, 1934, No. 11835. Convention date, April 19, 1933. [Class 135.] An extension tube, flexible or otherwise, is fitted to the ordinary valve-stem of a tyre, the inner end of the extension being supported near the wheel-hub, preferably in a recess in the hub or in an extension-piece applied to the hub. In the twin-wheel device shown, the extension-tubes 11, 12 connected to the existing valve-stems 9, 10 are arranged to extend in proximity to the wheel-body 6, the inner ends being fitted with valves 15, 16 and secured in the slotted and flanged webs 20, 21 of an extension 17 screwed on thewheel-hub. The attachmentunions 13, 14 for the tubes 11, 12 are adapted to open the valves in the stems 9, 10.
Patent GB-641653-A (GB)
Title: Improvements in or relating to a process for preparing a stable aqueous emulsion of polymerized normally liquid water-insoluble polymerizable compounds and the stable aqueous emulsion resulting from said process
IPC: C08F18/04
Filed: 1947-05-02
Abstract: An aqueous emulsion containing more than 25 parts of a polymerized vinyl ester of an aliphatic acid containing from 2 to 6 carbon atoms per 100 parts of water is prepared in the presence of a water-soluble per-compound, a non-polymerizable surface tension depressant and a hydrophilic colloid, the vinyl ester being introduced at such a rate that not more than 25 parts of monomer for every 100 parts of water are present during the polymerization.  Vinyl esters specified are vinyl acetate, propionate, butyrate, valerate and hexoate. Per-compounds specified are potassium or sodium persulphate, sodium or potassium perborate, peracetic acid, sodium, potassium, urea or hydrogen peroxide.  The latter compound may be added gradually during the process and may be used in conjunction with ferrous or ferric nitrate, chloride, sulphate, acetate, and benzene or toluene sulphonate.  Surface tension depressants specified are sodium oleate or palmitate, potassium stearate, Marseilles soap, diethanol amine laurate, isobutyl naphthalene sulphonic acid, sodium lauryl sulphate, sodium dioctyl sulpho-succinate and other sodium salts of sulphonated compounds, and quaternary ammonium compounds.  Hydrophilic colloids which may be used are polyvinyl alcohol, hydrolysed polyvinyl acetate, soluble starch, glycol and methyl celluloses, gum tragacanth, gum acacia, gum arabic, glue, gelatine, agar-agar, sodium alginate and sodium carboxy methyl cellulose.  The pH may be adjusted to between 2 and 7 by mineral acids, aliphatic acids, sulphonic acids or sodium bicarbonate. Diethyl amine ethyl oleylamide acetate may be used as an anti-foam agent.  The polymer emulsions may be used to coat wood, cloth, paper, metals and glass.  The Specification as open to inspection under Sect. 91 comprises also the use of vinylidene chloride or bromide, styrene, alpha-methyl styrene, ortho- and para-chlorostyrenes, polychlorostyrenes, methyl vinyl ketone, ethyl vinyl ketone, acrylic and methacrylic acids, methyl and ethyl acrylates, methyl methacrylate and ethylene glycol dimethacrylate, alone or together, in place of the vinyl esters.  This subject-matter does not appear in the Specification as accepted.
Patent GB-270352-A (GB)
Title: Manufacture of a yellow azo-dyestuff
Filed: 1927-05-03
Abstract: 270,352. I. G. Farbenindustrie Akt.- Ges. May 3, 1926, [Convention date]. Azo dyes.-A yellow azo dye, which dyes acetyl cellulose a fast non-phototrope goldenyellow shade, is obtained by coupling diazotized p-nitraniline with 1-nitro-2 : 4-diaminobenzene. The corresponding dyestuff from m-nitraniline gives only very weak dyeings on acetate silk, while the dyestuffs obtained by coupling the diazo compounds of aniline, p-chloraniline, otoluidine or p-aminomethylacetanilide with 1- nitro-2: 4-diaminobenzene give deep, but highly phototrope, dyeings on acetyl cellulose.
Patent GB-540845-A (GB)
Title: Improvements in or relating to turret or capstan lathes and like machine tools
IPC: B23Q16/04
Filed: 1940-07-18
Abstract: 540,845. Turning. DRUMMOND, A. July 18, 1940, No. 11872. [Class 83 (iii)] A lathe turret 1 has a cylindrical part 2 having an annular flange 6 engaging in a recess 5 of the carriage the flange being formed with recesses 7 having radial faces 9 which co-operate with a large rectangular-section bolt 8 which is of greater width A, Fig. 2, than the flange 6 and slides in a fitting slot in the turret carriage. The opposite faces of the recess from the faces 9 are inclined as shown at 11. The turret is rotated anti-clockwise and the bolt 8 inserted in the appropriate notch rotation of the turret being arrested by the face 9 engaging the bolt 8, this engagement being maintained by the cam action of a spring plunger 12 engaging the face 11 of a recess. In large machines the bolt and plunger may be held up by hydraulic or pneumatic pressure which may also serve to withdraw the bolt and plunger. In addition to or instead of bolt 12 a hydraulic plunger 15 may engage one of the inclined faces 11. Alternatively the means for rotating the turret may also serve to maintain the surface 9 against the plunger.
Patent GB-953951-A (GB)
Title: Azo dyes containing quaternary ammonium substituents
IPC: C09B35/025
Filed: 1962-03-28
Abstract: (Meta - dimethylaminoanilinocarbonylmethyl) trimethylammonium chloride is prepared by reducing m-nitrodimethylaniline with iron and hydrochloric acid, treating the product with chloroacetyl chloride and quaternising the chloroacetylamino compound with trimethylamine.ALSO:The invention comprises dyes of formula <FORM:0953951/C3/1> wherein n is 1 or 2, R is the residue of a primary mono- or di-amine, R1, R2 and R3 are alkyl, hydroxyalkyl, haloalkyl, cyanoalkyl, benzyl or cycloalkyl radicals or 2 or 3 of said R1, R2 and R3 radicals are joined together with the N atom to form a heterocyclic ring, Z1 and Z2 are alkyl, hydroxyalkyl, haloalkyl, cyanoalkyl, benzyl or cycloalkyl radicals or are joined with the N atom to form a heterocyclic ring, X is an anion and Y is hydrogen or a non-solubilising substituent. The dyes are prepared by the usual coupling procedure using a diazotised amine R(NH2)n and a suitable m-substituted N,N-disubstituted-aniline as coupling component.  Specified amines R(NH2)n are aniline, o-, m- and p-nitroaniline 2,4 - dinitroaniline, 4 - chloro - 2-nitroaniline, 2 - chloro - 4 - nitro - aniline, o-toluidine, 2 - nitro - p - toluidine, 5 - chloro - or 4 - nitro - o - toluidine, 2,5 - and 2,6 - dichloroaniline, 2,6 - dichloro - 4 - nitroaniline, m-chloro - or bromo - aniline, 4 - benzoylamino-2,5 - diethoxy - aniline, 5 - chloro - 2,4 - dimethoxy - aniline, 4 - and 5 - nitro or chloro-o - anisidine, 1 - and 2 - naphthylamine, 1-aminoanthraquinone, dianisidine, 5 - chloro-4 - nitro - o - anisidine, a ,a ,a  - trichloro - p-toluidine, 5 - chloro - a ,a ,a  - trifluoro - o - toluidine, 6 - amino - 2 - methylbenzthiazole, 1-aminocarbazole, aminobenzophenone, aminodiphenylsulphone, 2,6 - dichloro - 1,4 - phenyl enediamine, benzidine, 4,41 - diaminostilbene, 4,41 - diaminodiphenylamine, 2,5 - dimethoxy-4 - (p - nitrophenylazo) - aniline, aminoazotoluene, 2,5 - dimethoxy - 4 - cyanoaniline, 2-(p - chlorophenoxy) - 5 - chloroaniline and 5-diethylsulphamyl - o - anisidine. The dyes may be used to dye wool, silk and polyurethanes, but are preferably used to colour polyacrylonitrile fibres in yellow, red and violet shades. The preparation of the dyes is described in examples.