baber/WOPTO huggingface dataset:
Patent GB-268841-A (GB)
Title: Improvements in or relating to switches for operating and controlling adjustable chairs
IPC: H02P25/18
Filed: 1926-11-19
Abstract: 268,841. Ritter Dental Manufacturing Co., Inc., (Assignees of May, A. J.). Nov. 20, 1925, [Convention date]. Retractive switches; switches, quick-action.-The invention relates to a pedal-operated snapaction reversing switch for controlling an electric motor, associated with means for applying and releasing a brake and for stopping the motor automatically after a given travel, the motor being employed for adjusting chairs for dental, surgical, and other purposes. The subject-matter is identical with part of that described in Specification 261,774. According to the invention in the form shown in Figs. 1, 2, and 4, two rows of spaced contacts 48, 50 and 47, 49 are mounted on a support 43; a movable contactmember 41 normally occupying a neutral position between the two stationary rows is adapted to be moved to engage either of them with a quick movement due to an enclosed transmission spring 32, Fig. 4. A stronger spring 62 returns the parts to the neutral positions when the operator takes his foot off the pedal,
Patent GB-551175-A (GB)
Title: Improvements relating to fastening devices
IPC: F16B37/02
Filed: 1942-07-08
Abstract: 551,175. Sheet metal fastening devices; wood screws. TINNERMAN PRODUCTS, Inc. July 8, 1942, No. 9468. Convention date, July 3, 1941. [Classes 89 (i) and 89 (ii)] ]Also in Group XXII] A fastening member 21 preferably of cold rolled or spring steel and stamped from strip stock is formed with a dome-shaped protuberance from which tongues 24, 25 are formed and bent with V-notched ends displaced to engage the thread of a screw with a conical core 13 and quick pitch thread 14. The members A, B to be connected are stamped to engage at 1, 2, if desired with play, and to receive the screw 14 forming a flush joint. The fastener is secured to the part B as by rivets 26 passing through holes with play, by spot welding or by screws engaging tongues struck up from the metal of the fastener. In a modification the screw is secured to the part' A and the fastener is then arranged to rotate as a nut.
Patent GB-739056-A (GB)
Title: Improvements in or relating to frequency-responsive systems and apparatus
IPC: G01P3/49
Filed: 1952-04-16
Abstract: 739,056. Automatic speed control systems. MOORE, J. R. C. April 13, 1953 [April 16, 1952], No. 9480/52. Class 38 (4). [Also in Group XXXVI] Frequency-responsive apparatus comprises two or more poly-phase-operated windings producing oppositely - acting rotating fields about a cylindrical induction rotor. A tachometer receiver or indicator, Fig. 1, has two starconnected stator windings 5, 7 producing opposite rotating fields about rotor 14 and fed through series resistor, 23-25 and capacitors 26-28, Fig. 2, whose impedance values balance at a reference or datum frequency so that the stator windings 5, 7 are equally energized and the rotor 14 is stationary. If the frequency varies the capacitors 26-28 change in impedance and the excitation of stator windings 7 is changed whereby a difference torque operates to turn rotor 14 and pointer 17 against the restraint of a control spring 15. The latter may be omitted so that rotor 14 drives a regulator to adjust the frequency to the datum value. The construction can be extended to include additional stator windings energized from different sources and frequency and current from a common source may be compared by including an orthodox current-responsive winding.
Patent GB-963512-A (GB)
Title: High speed parallel binary full adder
Filed: 1962-03-12
Abstract: 963,512. Parallel binary adders. GENERAL ELECTRIC CO. March 12, 1962 [March 31, 1961], No. 9491/62. Heading G4A. [Also in Division H3] A parallel binary adder includes a highspeed carry-propagation line 50 (Figs. 1 and 2) connecting a number of threshold circuits 35 each receiving also the appropriate binary input signals A 1 , B 1  &c. and including a tunnel diode, two "exclusive or" circuits 100, 200 being also provided connected as shown to provide sum outputs S 1  &c. The tunnel diode load lines when a potential is applied to one, two and three of the terminals a, b, c, are such that the voltage across the tunnel diode is high if two or more of the terminals are energized and approximately zero if only one is energized. Diodes 51 in line 50 (Fig. 1) prevent feedback to the right. The "exclusive or" circuits each comprise a cross-coupled pair of transistors 104, 105 and 204, 205 cut off when the signals applied to them are the same but with one of the pair conductive when a single input is energized. A cascade amplifier 54 is provided to drive the second "exclusive or" gate.
Patent GB-308651-A (GB)
IPC: C09B5/62
Filed: 1929-03-25
Abstract: 308,651. I. G. Farbenindustrie Akt.- Ges. March 23, 1928, [Convention date]. Benzanthrone derivatives.-vat dyes are made by condensing benzanthrone - peri - dicarboxylic acid or anhydride, or a derivative or substitution product thereof, with an aromatic o-diamine or a salt thereof, in the presence or absence of an organic solvent. In examples, (1) benzanthroneperi-dicarboxylic anhydride is heated alone with o-phenylenediamine, the product dyes cotton orange tints, (2) benzanthrone-peri-dicarboxylic anhydride is heated with p-ohlor-o-phenylenediamine in nitrobenzene; the product dyes cotton orange tints, (3) benzanthrone-peri-dicarboxylic acid is heated with p-ethoxy-o-phenylenediamine in quinoline; the product dyes cotton deep brown tints, (4) benzanthrone-peri-dicarboxylic anhydride is heated with 1: 2-naphthylenediamine sulphate in quinoline; the product dyes cotton deep brown tints, and (5) 7-chlorbenzanthroneperi-dicarboxylic anhydride is heated with ophenylenediamine in nitrobenzene; the product is an orange powder which dyes cotton even tints. Specification 288,985 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) mentions also glacial acetic acid as a suitable diluent, and naphthylenediamine and diaminoacenaphthene as suitable o-diamines, and states that if salts instead of the free bases are used, it is advantageous to add an acidbinding agent, such as sodium acetate, to the condensation mixture. It also includes the following additional examples :-(6) benzanthroneperi-dicarboxylic anhydride is heated with 2 :3- diaminotoluene in glacial acetic acid; the product dyes cotton brilliant scarlet tints, (7) benzanthrone-peri-dicarboxylic anhydride is heated with the hydrochloride of 2 : 3-diamino-5-chlortoluene in glacial acetic acid with the addition of fused sodium acetate, (8) benzanthrone-peridicarboxylic anhydride is condensed with 2-chlor- 4: 5-diaminotoluene, 2-ohior-4 : 5-diaminoanisol, and 4 : 5-diaminoveratrol respectively in glacial acetic acid with addition of sodium acetate; the products dye cotton in orange, clear brown and blackish-brown tints, (9) benz-henzanthrone-peridicarboxylic anhydride (obtained by melting 4- naphthoyl-naphthalic anhydride with aluminium chloride) is heated with o-phenylenediamine in glacial acetic acid: the product dyes cotton an intense bluish tint, and (10) monobrom-benzanthrone-peri-dicarboxylic anhydride (obtained by brominating benzanthrone-peri-dicarboxylic anhydride) is ground with glacial acetic acid and heated with o-phenylenediamine; the product dyes cotton red-orange tints. This subject-matter does no appear in the Specification as accepted.
Patent GB-558634-A (GB)
Title: Improvements in or relating to electrode soldering irons
IPC: B23K3/03
Filed: 1942-07-10
Abstract: 558,634. Electric soldering-irons. STANDARD TELEPHONES & CABLES, Ltd., (trading as STANELCO PRODUCTS), and WARD, G. L. July 10, 1942, No. 9608. [Class 39 (iii)] An electric soldering-iron comprises a hollow insulating handle 1 containing the semicylindrical shanks of two stems 2, 4 which are separated by insulation 8. The stem 2 terminates in a ring 20 carrying the copper bit 18. The stem 4 terminates on a guide 21 for a carbon rod 13 extending into the bit in contact with a carbon block 19. A trigger 5 is pivoted at 16 and forked at the end to engage pins carried by the carbon rod holder 14, and the rod 13 is normally retracted by a spring 7. When the trigger is pressed towards the handle, the rod 13 is moved into contact with block 19 to close the heating circuit. The bit may alternatively 'be tubular as in Specification 558,643. A modification is described in which the bit is at right angles to the handle. Specification 123,266, [Class 83 (iv)], also is referred to.
Patent GB-451619-A (GB)
Title: Improvements in type casting and type setting machines
IPC: B41B5/06
Filed: 1935-03-27
Abstract: 451,619. Printers' composing-machines. BAILEY, J., c/o Manifoldia, Ltd., Bromford Lane, West Bromwich, Staffordshire. March 27, J935, No. 9622. [Glass 100 (iii)] Galley-mechanism ; trimming type and type bars.-Relates to the production of short-bodied grooved type or type-bars and their delivery to a curved grooved plate or holder, which is supported on an adjustable saddle, as described in Specifications 413,270 and 432,595, the type or type-bars being grooved and reduced in height by cutters in known manner. The type or type-bars, which may be delivered from a casting or setting machine, are continuously advanced along a channelled guide by a rotating screw 15, Fig. 1, which is adapted to indent their sides, so as to effect a positive feed. Milling-cutters 17 form the grooves 18, Fig. 4, in the sides of the type or type-bars, and a saw 19 cuts off the lower parts of the shanks. The cutter shafts are geared together, and are adjustable towards and away from each other without disengaging the gearing. A. friction-wheel 37 prevents the type from being moved backwards by the saw. The severed type are fed along a groove formed by guide-plates 40, from which they are fed by an endless band 41 through grooves 13 in the saddle 12, and into one of the grooves of the plate or holder 10. The band 41 is driven through friction gearing 48, 49, Fig. 5, which is disconnected when the band pulley 42 is raised by means of a hand lever 52. The hand lever also operates a sliding link 58, to which is connected a second link 62 having a tooth 66, the arrangement being such that the movement of the hand lever rotates the plate 10 a step, after which it is again locked by the tooth 66. A mechanically or manually operated line-book may be employed to draw the type into the grooves of the curved plate.
Patent GB-814646-A (GB)
Title: Improvements in or relating to amplifying arrangements
Inventor: SMITH DEREK LESLIE ANTHONY
IPC: H04R5/04
Filed: 1955-04-02
Abstract: 814,646. Sound reproducing circuits. ELECTRIC & MUSICAL INDUSTRIES Ltd. April 3, 1956 [April 2, 1955], No. 9673/55. Class 40 (4). In an amplifying arrangement comprising two amplifiers 1, 2, Fig. 1, a common potentiometer 11 which can vary differentially the gain of the amplifiers is connected between the output lines 7, 10 of the two channels and has its slider 12 connected to a point of fixed potential. Cathode followers 13, 14 in a practical embodiment, Fig. 3, are connected to output terminals 7, 8; 9, 10 via ganged four-position switches 15-18 which give the following facilities: (i) binaural reproduction with amplifier 13 feeding terminals 7, 8 and amplifier 14 feeding terminals 9, 10; (ii) binaural reproduction with the above connections crossed; (iii) monaural reproduction with the amplifier outputs in parallel; and (iv) reproduction from amplifier 13 only. In a modified arrangement described with reference to Fig. 4 (not shown) the potentiometer controls differentially the degree of feedback to the two amplifiers. In a further embodiment described with reference to Fig. 5 (Provisional) (not shown) the potentiometer is connected to vary differentially D.C. voltages applied to the amplifier.
Patent GB-567917-A (GB)
Title: Improvements in and relating to adjustable means for dop mountings for diamond and like grinding, polishing or like machines
IPC: B24B41/06
Filed: 1943-06-16
Abstract: 567,917. Grinding diamonds &c. JEARUM, F. C. June 16, 1943, No. 9681. [Class 60] A dop mounting means for grinding, lapping, cutting, &c. diamonds and other stones, or hard metal, comprises a base 1 upon which is a crossslideway 2 carrying a bracket 3 consisting of two parallel plates 4, the forward portions'of which are formed with dovetails 5 of arcuate form constituting a slideway ; the arc of the slideway is such that the face of the stone to be cut may be in or near the centre of curvature of the slideway. The slideway receives an arcuate slider 6 having in its rear face a rack 9 comprising worm teeth, and in its front face a slideway 10 to receive the dop mounting means proper. Between the plates 4 is pivotably mounted, by means of a ball pivot 14, a spindle 12 having thereon a. worm 11 adapted to mesh with the rack 9; a screw 22 carried in a cross-piece 19 between the plates 4 is adapted to engage a collar 15 on the spindle 12 to hold the worm in mesh with the rack, or to allow the spindle to be swung about its pivot to disengage the worm for rough hand-setting of the slider 6. The slideway 10 carries a slider block 23 bored at 25 to receive a post 28 and recessed at 24 to receive a boss 29 on the post provided with a part 30 engaged by screws 31 in the block, whereby the post may be adjusted about its axis ; the outer end of the post receives a dop mounting 32 clamped in position by a screw 34. As described, the apparatus is for use with a cutting-wheel having its cutting face in a vertical plane. Specification 567,188 is referred to.
Patent GB-186642-A (GB)
Title: Improvements in the method of and plant or apparatus for the extraction of oils, fats, waxes, and the like
IPC: C11B1/10
Filed: 1921-04-01
Abstract: 186,642. Reavell, J. A., and Kestner Evaporator & Engineering Co., Ltd. April 1, 1921. Fats, fatty oils and waxes, extracting by solvents. Solvent from a reservoir L is admitted to the top or bottom of one or more charged extractors A through valves l<1>, a<4>, d<1>, a heater D and valve a<2> or a<3>, and is then circulated through the extractor A, valves a<5> and d<1>, heater D and valve a<2> until the extract and extractor contents reach a desired temperature. The extract is then passed from the extractor through valves a<6> and e' to a heater E from which the solvent vapours and extracted oil particles rise to a separator F. The separated oil is siphoned into a tank G, while the vapours pass through a pipe f<1> to the top or bottom of the extractor A by valve f<x2> or fx<1> and effect further extraction. Vapours from the extractor may be passed through pipes f<3>, valve fx<3>, and pipe f<4> to one element J of a condenser J, J', the condensate passing back to the heater E through valve n<1> and pipe N, or passing through element J' to a separator K from which solvent is run through pipe k' into the reservoir L and water is siphoned off through pipe k<2>. When the material is sufficiently exhausted or the extract sufficiently strong, the extract is run through valve a<8>, and if desired the oil in tank G through valve g', to a third heater H by way of pipe P and valve h<1>. The solvent vapours and oil particles rise through pipe h<2> to a separator I, the vapours passing on up pipe f<5> to condenser J, J', separator K, and solvent reservoir L, while the oil is siphoned into a tank O and may be removed or may be sent through valves h<4>, h<1> to the heater H for retreatment. The heaters are preferably of the kind described in Specification 122,500, [Class 64 (iii), Surface apparatus &c.], and separator K is preferably of the " weir " type.
Patent GB-555896-A (GB)
Title: Improvements in or relating to cylinder and piston apparatus for the displacement of liquid
IPC: F04B9/02
Filed: 1942-07-13
Abstract: 555,896. Piston extrusion apparatus. KINNAIRD, J. A. July 13, 1942, No. 9708. [Class 102 (ii)] [Also in Group XXVI] In piston extrusion apparatus in which a hand- or power-operated threaded piston rod 4 screws through a tapped hole 15 in the closure cap 2 of one end of a cylinder 1, and the inner end of the rod is provided with a head 16 loosely connected to the piston 5 by means of a removable surrounding member 17, the other end of the cylinder is fitted with a closure cap 3 with a discharge union connection 10, and the enlarged head 16 has a convex surface to bear against a thrust surface on the piston. Instead of an angle ring 17, a flat ring may co-operate with a recess in the piston. The latter may be fitted with a non-return spring ball valve 21, the closure cap 2 may be provided with an air vent, and the cylinder wall may be provided with a screw plug 29 for an air bleeding valve or a pressure gauge. A flange 11 on the cap 3, a pad 27 for the plug 29, and an angle ring 12 for the mounting of the cap 2, may all be welded to the cylinder 1.
Patent GB-220595-A (GB)
IPC: G09G3/00
Filed: 1924-04-16
Abstract: 220,595. Elektrizitõts Ges. Richter, Dr. Weil & Co., Akt.-Ges. Aug. 18, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Monogrammic signs. - A connection device for connecting in circuit, in any desired order, a number of consuming devices, for example lamps of a universal sign, comprises a pair of superimposed sets of con. tacts with contact springs between which a coupling member in the form of a key with wards is inserted by hand to connect contacts together in accordance with the particular key used. As shown applied to a monogrammic sign in which any letter or number may be formed by energizing the correct selection of a bank of lamps, two sets of superimposed and insulated contacts consisting of bent metal plates with integral connecting lugs a and contact springs c, Fig. 2, are arranged on posts at a distance apart so that a key, Fig. 5, pushed on to the guide rod h serves to connect a number of the contacts together, according to the form of key chosen. A separate key is provided for each character required. The lower contacts x, y are connected to one of the supply lines and the other contacts are connected to the lamps.
Patent GB-769622-A (GB)
Title: Substituted amides
IPC: C08K5/20
Filed: 1955-04-04
Abstract: Plasticizers for vinyl halide resins comprise N : N-disubstituted amides of acyclic fatty acids of 16-22 carbon atoms which contain in the acid residue one or more carbonate groups <FORM:0769622/IV(a)/1> the N : N-substituents being hydrocarbon radicals containing together 2-14 carbon atoms.  The resins may be polymerized vinyl chloride or bromide or copolymers thereof with other compounds containing the CH2 = C< group such as vinyl acetate or propionate, vinylidene chloride, ethyl acrylate or methyl methacrylate.  The plasticizer may be present to the extent of 10 per cent or more, preferably 35-50 per cent of the whole composition.  An example is given of polyvinyl chloride containing N : N-dimethyl-9 : 10-carbonato-stearamide, tribasic lead sulphate as stabilizer and stearic acid as lubricant.ALSO:The invention comprises N : N-disubstituted amides of acyclic fatty acids of 16-22 carbon atoms which contain in the acid residue one or more carbonate groups <FORM:0769622/IV(b)/1> the N : N-substituents being hydrocarbon radicals containing together 2-14 carbon atoms.  The compounds are obtained by treating the corresponding dihydroxy compounds with phosgene in the presence of an acceptor for the hydrogen chloride evolved. The dihydroxy compounds are in turn prepared from the unsaturated amides by reaction with hydrogen peroxide and formic or acetic acid followed by hydrolysis or alcoholysis of the hydroxy-acyloxy derivative.  Such hydroxylation may precede amide formation.  An example is given of the reaction of phosgene with N : N-dimethyl-9 : 10-dihydroxystearamide in the presence of pyridine.  Other products can be obtained from (hydroxylated derivatives of) oleic, erucic, elaeostearic, linoleic, linolenic, clupanodonic and palmitolenic acids.  The N-substituents may be the same or different and may be methyl, ethyl, propyl, butyl, t.-amyl, n-octyl, 2-ethylhexyl, lauryl, myristyl, phenyl, benzyl, phenethyl or cycloalkyl.
Patent GB-218740-A (GB)
Title: Improvements in temperature controlling devices for electrical heating appliances
IPC: H05B1/02
Filed: 1923-04-10
Abstract: 218,740. Wingfield, B. R. April 10, 1923. Thermal switches; switches, quick - action. - Thermally operated switches have a tube 1 filled with expansible liquid into which extends a switch operating rod terminating in a cap between which and the upper closure cap to the tube 1 extends a liquid-tight corrugated flexible tube. On expansion of the liquid the rod is forced upwards operating a quick-action switch 8 through intermediate mechanism which enables the slowly moving operating rod to move the switch to its off " position with a quick action. This mechanism comprises a pivoted bell-crank lever 3 one arm of which is held by an adjustable spring 13 in engagement with the upper end of the operating rod, the other arm being pivoted to a plunger 4 adapted to compress a spring 5 in a cylindrical casing 6 pivoted to the operating lever 7 of the switch 8 the relative motion of the plunger 4 and casing 6 being limited by a pin 4a on the former moving in slots 6<a> in the wall of the casing 6. As the operating rod rises with increasing temperature the spring 5 is compressed by the plunger 4 the casing being held by a detent 11 on its wall being engaged by a pivoted spring-pressed latch 9, which is finally tripped by an adjustable screw 12 on the lever 3 thereby allowing the spring 5 to open the switch 7 with a quick action. The switch is reclosed positively by the action of the return spring 13 on the contraction of the liquid in the tube 1, until the detent 11 is re-engaged by the latch 9. The switch 8 may have an inherent quick make action to re-close its circuit rapidly. In the modified form shown in Fig. 2 two inter-connected thermostat tubes 1, 1<a> are employed and the mechanism between the operating rod and switch 8 is arranged to give a snap action to the latter in both directions. This is effected by having two springs 5, 5<a> in the casing 6 one bearing between the plunger 4 and a division 6<b> and one between the division and the enlarged head 17 of a rod 18 within the casing 6. The wall of the casing has a second detent 11<a> engaged by an additional catch 9. The opening movement on expansion of the liquid is similar to that described above, but on subsequent contraction the upper spring 5a is compressed by downward movement of the rod 18 until the upper latch 9 is engaged by adjustable nuts 15, 15<a> on a rod 16 attached to the lever 3. Specification 6783/05 is referred to.