baber/WOPTO huggingface dataset:
Patent GB-1060143-A (GB)
Title: Hydraulic clutch
Inventor: KAMM LAWRENCE JOSEPH
IPC: F16D35/02
Filed: 1964-05-12
Abstract: 1,060,143. Hydraulic clutches; reverse gearing. NUMERICAL CONTROL CORPORATION. May 12, 1964, No. 19700/64. Headings F2C and F2D. In an hydraulic clutch, particularly for servo mechanisms and regulators, comprising driving and driven rotors 24, 82 drivingly connected by the viscous drag of centrifuged liquid, e.g. oil, in an annular chamber 70 of the driving rotor, the effective contact area between the liquid and the driven rotor is selectively varied by pneumatic or other gaseous pressure transference of the centrifuged liquid to and from the chamber 70. The peripheral zone of the driven rotor 82 and the adjacent wall 90 of the chamber 70 are outwardly tapered. In Fig. 1, the driving and driven rotors are respectively fast with a pulley 28 and a shaft 32. The chamber 70 communicates through an annular passage 74, with an annular reservoir 72 also formed in the driving rotor. The chamber and the reservoir are subjected to varying gaseous pressures respectively through a pipe 128, a bore 112 of the shaft 32, and radial flutes 94 in the driven rotor, and a pipe 130, another bore 114 of the shaft 32, and ducts 79 in the driving rotor. In Fig. 5 (not shown), a forward and reverse belt drive of selectively variable torque transmission comprises two of the above clutches (20), (22), having their driving rotors driven in opposite directions by a motor (40) through a belt (42) tensioned by a spring-loaded jockey pulley (44) and their driven rotors connected by a belt (54) to rotate in the same direction. The output may be either one or both of driven shafts (32), (34). Two independent gaseous pressure sources are respectively connected to the chamber 70 of one clutch and the reservoir 72 of the other clutch, and the reservoir 72 of said one clutch and the chamber 70 of said other clutch. When the equilibrium of pressure of the two sources is disturbed the shafts (32), (34) are rotated in a clockwise or anticlockwise direction and the torque transmitted is dependent on the pressure differential. In Fig. 4 (not shown) the quantity of oil in the reservoir is kept constant by an inwardly directed annular weir permitting excess oil to be returned to a further annular reservoir in the driving rotor, the oil being pumped into the first-mentioned reservoir from said further reservoir by bent tubes which are fast with the driven rotor and have tangentially directed scoop inlets. An external inwardly directed annular weir is provided adjacent an external annular filling groove to limit the oil charging of the rotor which is effected during rotation.
Patent GB-828803-A (GB)
Title: Process for polymerizing conjugated 1.3-dienes
IPC: C08F2/52
Filed: 1956-06-26
Abstract: A process for the emulsion polymerization of a conjugated diene having the general formula CH2=CR1-CR2=CHR3 in which R1 and R2 are hydrogen atoms or methyl or ethyl groups and R3 is a hydrogen atom or a methyl group, in the presence of a free radical-generating catalyst, comprises adding to the polymerization mixture after at least 70% conversion to polymers has taken place, an aliphatic mercaptan having at least 8 carbon atoms in the molecule in an amount of at least 0.02 part by weight for each 100 parts of monomer or monomers originally charged. Specified polymers are those of 1,3-butadiene, 1,3-pentadiene, 2-methyl 1,3-butadiene, 2-ethyl-1,3-butadiene and 2,3-dimethyl-1,3-butadiene: and these monomers may be copolymerized with styrene para-chloro-styrene, acrylic acid, methacrylic acid and esters and nitriles of acrylic and methacrylic acids.  The mercaptan preferably has 8-16 carbon atoms and has the mercapto group attached to a tertiary carbon atom.  In examples 0.1 to 0.2 part of tretiary-dodecyl-mercaptan is added in addition to any that may already be present when the polymerization had essentially stopped.  Stearic acid-potassium hydroxide, potassium chloride and potassium persulphate may also be present in the emulsion mix.  Reference has been directed by the Comptroller to Specification 625,647.
Patent GB-1022762-A (GB)
Title: Improvements relating to the manufacture of shoemakers' lasts'
Inventor: TUSA JOHN
IPC: A43D3/02
Filed: 1961-06-01
Abstract: 1,022,762. Moulding lasts of polyurethane. BRITISH BATA SHOE CO. Ltd. May 25, 1962 [June 1, 1961], No. 19752/61. Heading B5A. [Also in Division A3] A last of rigid polyurethane foam, the density of which is of the order of 18 to 25 lbs. per cubic foot is made by polymerization in a multipart mould. A pin fixed to one mould part forms a socket in the last and, during moulding, a pin is embedded in the last to extend therefrom. A reinforcing insert for the last, e.g. a metallic insert, may be located in the mould and the polyurethane may incorporate a fibrous reinforcing material or a strengthening metallic soap or powder additive.
Patent GB-1004901-A (GB)
Title: Improvements in and relating to the surface saponification of cellulose ester fabrics
Inventor: MORLEY DEREK JAMES
IPC: D06M11/38
Filed: 1962-05-23
Abstract: 1,004,901. Surface saponification of cellulose ester fabrics. COURTAULDS Ltd. May 22, 1963 [May 23. 1962], No. 19797/62. Heading B5B. The fibres of a cellulose triacetate fabric are superficially saponified while leaving the interior of the fibres substantially unchanged by immersing the fabric in an aqueous alkaline saponifying bath having a pH greater than 7 and containing a cation-active compound, the concentration of the alkali in the bath, the bath temperature and the immersion time being so selected that saponification of the fibres is restricted substantially to the exterior of the fibres. The alkali in the solution may be sodium or potassium hydroxide, sodium or potassium carbonate, bicarbonate, phosphate (i.e. Na 3 PO 4  or K 3 PO 4 ), or metasilicate or may be the cationactive compound itself, e.g. a quaternary ammonium hydroxide such as tetra n-butyl ammonium hydroxide. The cation-active compound is, however, preferably a quaternary ammonium halide such as lauryl dimethyl benzyl ammonium chloride or cetyl trimethyl ammonium bromide. Phosphonium halides or hydroxides may be used. The term " cellulose triacetate " is defined as meaning cellulose acetate having an acetyl value of at least 59% calculated as combined acetic acid. When the alkali is caustic soda, the saponification temperature is preferably 55‹ to 65‹ C., when the alkali is sodium carbonate it is preferably 70‹ to 100‹ C., and when it is sodium bicarbonate it is preferably 95‹ to 100‹ C. and the rate of saponification is slower. The treatment may be combined with the dyeing of the fabric provided that the dyestuff to be used is stable to the alkali used for the saponification. The triacetate fabric may be treated in the unset state or may be treated after having been subjected to a heat-setting treatment. The treatment increases the safe ironing temperature of the fabric and reduces the tendency of the fibres to become charged with static electricity. Specifications 758,442 and 815,794 are referred to.
Patent GB-183473-A (GB)
Title: Improvements in or relating to screw propellers
IPC: B63H1/26
Filed: 1922-07-19
Abstract: 183,473. Pinkert, C. July 19, 1922. Screw propellers are formed with a decreasing pitch from root to tip, the pitch changing in arithmetic, geometric, or similar progression. In one form, the pitch S3 at the circular position 3 is taken as a basis of calculation, the other pitches S1, S2, S4' S, being respectively 0.5, 0.85, 1, 1.06, and 1.1 times S3. The projected surface is obtained by the intersection of equally spaced radial lines with the equally spaced pitch line circles, the forms I, II, III being suitable for twin screws and IV, V for single screws.
Patent GB-651926-A (GB)
Title: Improvements in or relating to gates or the like
Inventor: BUCKLAND STUART GIBSON
IPC: E06B9/02
Filed: 1948-07-24
Abstract: 651,926. Stair guards. HOPKINS & BUCKLAND, Ltd. July 24, 1948, Nos. 19862/48 and 589/49. [Class 20(iii)] [Also in Group I] A barrier or guard, particularly for fixing at the top or bottom of stairs to prevent accidents to children, comprises a rigid non-extensible framework having strut-like fixing means mounted at its top and expandible in the plane of the framework to locate the top of the gate by pressure on spaced abutments, with means preventing rotation of the framework about the fixing means. As shown in Fig. 1, two uprights a, a<SP>1</SP>, which are provided with feet a<SP>2</SP> are connected to a cross bar b and in the inverted U so formed a wire mesh grid c is attached as by welding at points d. The upper end of each upright is extended to form ring shaped sockets e, e' and a third such socket f<SP>1</SP> is attached to the bar b slightly off-centre. A tube g is secured in the sockets e, f<SP>1</SP> and slidably mounted in the outer end of this tube is an inner tube h which carries a rubber pad i<SP>2</SP> at its outer end in a cup i<SP>1</SP>. A series of holes are provided in the tube h so that it may be positioned by a pin j passing through a hole in the tube g. A rod m, Fig. 4 is secured in the inner end of tube g and slidably mounted over this rod and in the third socket e is a tube n which carries in its outer end a slidable inner tube p positioned by a pin p<SP>2</SP>. A cup q<SP>1</SP> carrying a rubber disc q<SP>2</SP> is adjustably fixed to the outer end of the tube n by means of a screw threaded pin. The tubes g, n are connected together by a lever k which is pivoted to the tube g and which has cam slots k<SP>2</SP> to engage a pin o carried by the tube n. The cam slots are arranged so that pressing the lever down forces the tubes g, n apart so that the rubber pads can engage both posts of a doorway or staircase to hold the gate in position; the tubes h, q and the cup q<SP>1</SP> are suitably positioned beforehand. The ends of the cam slots k<SP>2</SP> have a slight notch k<SP>3</SP> to provide an initial resistance to the raising of the lever k. In a modification the rod m may be omitted and the lever k pivoted to both tubes g, n to form a toggle the socket e having sufficient play to permit the misalignment of the tubes g, n when the lever k is raised to draw their ends together. In a further modification the tubes g, n are hinged together and a spring-pressed internal bolt is provided to lock the tubes in alignment. The Provisional Specification states that a hinge may be provided on one of the tubes g or n and a suction pad or other means used to attach the device to a door post, wall or other abutment.
Patent GB-504366-A (GB)
Title: Discharging device for gases or liquids, especially fuel injector for internal combustion engines
IPC: F02M61/20
Filed: 1937-07-19
Abstract: 504,366. Valves. PAOLINI, M., FIDANZIA, N., and ROSA, M. DE. July 19, 1937, No. 19943. Void. Convention date, July 18, 1936. [Class 135] [Also in Group XXVII] A fuel-injection valve, a safety-valve, or a pressurereducing valve is opened by fluid pressure acting on one or more elastic cylinders 10, 12 connected to the valve stem 13, the upper end of which is formed by a bolt 9 screwed into a perforated disc 8 fixed in the valve casing 2. The cylinders may be arranged in parallel or in series and may be filled with air.
Patent GB-1359508-A (GB)
Title: Apparatus for detecting the presence of a time varying signal
Inventor: LEWIS J A
IPC: H04M15/28
Filed: 1971-06-10
Abstract: 1359508 Identifying conductors AUSTRALIA POSTMASTER-GENERALS DEPT RESEARCH LABORATORIES 10 June 1971 [10 June 1970] 19986/71 Heading G1 [Also in Division H4] Apparatus for detecting the presence of a particular signal on a signal route in a system to which the particular signal is applied comprises means to detect signals on said route and means to compare each detected signal with a test signal in phase with the applied particular signal and to produce an output only if the detected signal is in predetermined phase relationship with the test signal over a given period of time. As shown an oscillator 13 successively supplies via a stepping switch 14 a test tone to the lines 11 of a PBX and if any one of these lines is connected to an exchange line 12 the tone appears on the exchange line, is squared at 19 if it exceeds a predetermined threshold and compared at 18 with a clock pulse C in phase with the oscillator output. The tone is applied to the extension line and received from the exchange line at centre taps of line transformers so as to employ a cailho or single wire phantom connection. When the switch 14 steps to a PBX line connected to the exchange line, despite noise, the majority of the squared pulses I of the tone burst on the exchange line will co-incide with clock pulses C and the comparator produces an output stopping the stepping switch drive 15. A logging device not shown records the extension involved, the number dialled and the duration of the call. The comparator device (detailed in Figs. 3 and 5, not shown) comprises an AND gate to detect co-incidences between the squared and clock pulses, a first counter incremented on each co-incidence and arranged to give an output to the unit 15 if it reaches a count of say 40 and a second counter incremented for each clock pulse following the first coincidence and arranged to reset itself and the first counter if it reaches a count of say 60. Thus the comparator produces an output if 40 cycles of a 60 cycle tone burst from oscillator 13 reach the exchange line. The comparator may be arranged to be reset if when the second counter reaches an intermediate count of say 20 the first counter has not reached a count of say 8. To cope with a larger number of extension lines the switch 14 may be a multibank switch with the fixed contacts of each bank being connected to different extension lines. When the switch stops on detection of tone on an exchange line, arrangements not detailed remove the tone from the banks one at a time. The comparator which includes a counter which is incremented by clock pulses after the tone has ceased gives an output indicating the particular bank and thus the extension involved.
Patent GB-1376523-A (GB)
Title: Wheel truing method and apparatus
IPC: B21D53/26
Filed: 1972-05-01
Abstract: 1376523 Truing metal wheels; angular bending DUNLOP Ltd 1 May 1972 [3 May 1971] 20076/72 Headings B3A and B3E A method of truing a metal wheel having a disc portion 12 and a rim 11 comprises bringing a first gripping device comprised of a die 38 into engagement with the disc 12 and a coaxial second gripping comprised of dies 9, 13 in combination with blocks 19 device into engagement with the rim 11, the devices being arranged coaxially so that the disc and rim take up coaxial relationship and then axially displacing the gripping devices relative to one another first in one direction and then in the opposite direction so as to cause permanent deformation of the wheel. The wheel portions remain substantially coaxial as a result of the deformation applied. The wheel is placed on a plate 31 whereupon an upper plate 37 is driven downwardly and a jack 33 drives fingers 32 through holes 30 in the disc 12, thereby centering the wheel relative to the apparatus. The rim is brought on to the support die 9 and the arcuate blocks 19 are brought into engagement with a reference die 8 by jacks 25. The upper die 13 is then moved into contact with the upper edge of the rim thereby also centering a floating table 23. There is planishing and truing of the wheel portions engaged between the blocks 19 and the dies 9, 13. The plate 31 is moved upwardly so as to distort the disc 12 relative to the rim 11 beyond its elastic limit and then the disc is forced downwards stretching it beyond its elastic limit. The die 13 and the plate 37 are then moved vertically upwards and the blocks 19 retracted. The plate 31 is raised to bring the lower edge of the rim above the level of ejection plates 26, which are then advanced to the centre of the apparatus. The plate 31 is lowered, allowing the wheel to rest on the plates 26 and it is ejected by an arm 41.
Patent GB-1379011-A (GB)
Title: Method of manufacturing semiconductor devices
IPC: H01L21/288
Filed: 1973-04-27
Abstract: 1379011 Semi-conductor devices MATSUSHITA ELECTRONICS CORP 27 April 1973 [2 May 1972] 20090/73 Heading H1K The manufacture of a semi-conductor device comprises coating one surface of a silicon body containing at least one PN junction with platinum, heating to adhere it to the silicon, plating nickel on the platinum and then heating to diffuse the platinum into the body. As described phosphorus is first diffused into opposed faces of an N type silicon wafer, residual oxide removed, the diffused layer lapped from one face and boron diffused into the opposite face to form a junction. After clearing away oxide the wafer is dipped in an aqueous solution of chloroplatinic acid and hydrofluoric acid to deposit the platinum and then heated at 700‹ C. for 5 to 10 minutes in an inert atmosphere. Electroless nickel is then deposited and the wafer reheated for 10-60 minutes at 800- 900‹ C. in inert gas. This improves the adhesion of the nickel which constitutes the ohmic contacts to the wafer and by reducing the carrier lifetime improves the switching characteristics of the device.
Patent GB-422572-A (GB)
Title: Improvements in and relating to the lubrication of dough dividing machines
IPC: A21C5/04
Filed: 1933-07-15
Abstract: 422,572. Lubricating dough-dividing machines. BAKER PERKINS, Ltd., HARBER, L. S., and POINTON, J. E., Westwood Works, Peterborough. July 15, 1933, No. 20100. [Class 87 (ii)] Comprises a circulatory oil system for lubricating the parts of dough-dividing machines in which a pump-fed reservoir distributes the oil by gravity to the working parts, the excess being delivered to a sump for re-pumping into the reservoir. The invention is illustrated as applied to a dough-dividing machine of the type described in Specification 319,891, [Class 87 (ii)]. A reservoir 5, adjacent to the hopper 6, lubricates the upper surface of the reciprocating knife 8 by direct contact and also delivers oil through the apertures 9 therein directly to the upper surface of the ram 10 and indirectly through the medium of channels 11 and an overflowing gutter 12 formed therein, lubricates the sides, base, and guiding-channels for the ram. Excess oil drops through the strainer 22 into the sump 20 from whence it is re-delivered by the pump 24 to the reservoir 5. An overflow pipe connects the reservoir 5 directly to the sump. To lubricate the rotary measuring cylinder 36, which carries the divided dough pieces from the receiving to the delivery point, two methods are adopted. The exterior surface is lubricated through holes in its casing supplied by the capillary action of coiled springs 29 partly immersed in the oil in the sump 20, while the surfaces of the reciprocating piston 31 are lubricated by a separate charge of oil 32 enclosed in the cylinder. When the piston is in an upright position, each end in turn is immersed in the oil 32. In a modified construction for machines not employing a knife 8, the passage corresponding to 9 is formed as a slot in the upper surface of the ram, and the overflow gutter corresponding to 12 is fitted near the front end of the ram. The springs 29 are replaced by an additional reservoir mounted on top of the casing of the cylinder 36 and communicating with holes therein. A comb or notched scraper in contact with a moving surface may regulate and distribute the supply of oil. To obviate rust, the moving parts may be made of stainless steel, chromium-plated, or treated with any anti-rust preparation.
Patent GB-702009-A (GB)
Title: Improvements in milk churns and the like
Inventor: RIDGLEY HERBERT GEORGE
IPC: A01J9/02
Filed: 1951-08-27
Abstract: 702,009. Making hollow ware; soldering and brazing. DAIRY SUPPLY CO., Ltd. July 1, 1952 [Aug. 27, 1951], No. 20120/51. Classes 83 (2) and 83 (4). [Also in Group XVII] In fixing a hoop to a milk churn or like vessel a plurality of strips are welded &c. to the vessel which is tinned with the strips thereon, the hoop is tinned and placed about the vessel, the strips are turned over on to the hoop and are soldered thereto. In one embodiment four strips 10, Fig. 3, are welded to a churn 11 which is then tinned. A tinned hoop 13 carrying handles is fitted over the strips 10 which are hammered over and soldered. Solder is run round the top and bottom edges of the hoop to fill up any gaps. In a modification strips 10, Fig. 5, pass through holes 15 in a hoop 13. According to the Provisional Specification the inner hoop surface may have recesses therein to fit about the strips.
Patent GB-358059-A (GB)
Title: Improvements in surgical, dental and like operating tables
IPC: A61G13/04
Filed: 1930-07-02
Abstract: 358,059. Operating-tables. HOLBORN SURGICAL INSTRUMENT CO., Ltd. and ESSINGER, S. B., 26, Thavies Inn, Holborn Circus, London. July 2, 1930, No. 20136. [Class 52 (iii).] A surgical, dental, or like operating table comprises fluid-actuated means for tilting part or all of the table proper. The table shown comprises a hollow pedestal 10 containing the usual oil reservoir and pump by means of which the table proper 11 is raised and lowered. The table 11 is mounted on a tubular framework 16 on a piston rod 13, being secured to it by rigid stiuts 14 and a pivot pin 15. From the frame 16 depend two triangulated legs 18 carrying an oil pump 19, operated by a foot lever 26, for tilting the table 11 by means of the piston rod 23 and link 24. The piston rod 23 is fitted with securing clamp 32. A release valve is opened by a pedal 25, which operates between stops 28, 29. The table may be arranged so as to tilt in any desired direction by means of universal joints instead of pivots.
Patent GB-697164-A (GB)
Title: Multi-electrode crystal device for producing electronic relay action
IPC: H01L21/00
Filed: 1949-08-03
Abstract: 697,164. Semi-conductor amplifiers. COMPAGNIE DES FREINS & SIGNAUX WESTINGHOUSE. Aug. 3, 1949 [Aug. 13, 1948], No. 20191/49. Class 40 (iv). An amplifier comprises a semi-conductor block or assembly having two portions of different conductivity characteristic, a base electrode, a collector electrode engaging one portion of the semi-conductor such that the contact involves a surface barrier layer, and an emitter electrode which engages the other semi-conductor portion. In Fig. 1, a block of semi-conductor such as germanium has a P-type portion 3 and an N-type portion 2, which is supported on base electrode 7. The emitter electrode 9 is connected to the portion 3 either by a low resistance contact or one which involves a surface barrier layer 6. The collector electrode 8 is connected to portion 2 such that barrier layer 4 is present. Signals fed to control or emitter electrode 9 result in amplified signals appearing in the circuit comprising collector electrode 8. With this construction the emitter and collector electrodes may be separated by a distance of 50 microns. In a modification, the second semiconductor portion consists of selenium instead of P-type germanium. In Fig. 4, an element 21 of selenium surrounds the collector electrode 20 which engages a germanium crystal 18. The emitter electrode 24 is applied to the selenium portion 21. In a modification of Fig. 4, the germanium element is made conical where it engages the collector electrode. In Fig. 6, the emitter electrode 31 is ring-shaped and applied to selenium element 27, while germanium elements 28 form the base electrode 30 and collector electrode 29 respectively. The germanium may be replaced by silicon or other material of N-type conductivity and the selenium by cuprous oxide or other material of P-type conductivity.