baber/WOPTO huggingface dataset:
Patent GB-727783-A (GB)
Title: Improvements in apparatus for controlling the attractive force developed in an electromagnet
Inventor: MASON JAMES ALMON
IPC: F16D48/06
Filed: 1953-08-10
Abstract: 727,783. Control systems for electromagnets; transmitting mechanical power. WARNER ELECTRIC BRAKE & CLUTCH CO. Aug. 10, 1953, No. 22021/53. Class 38 (4). [Also in Groups XXIV and XXXIV] To promote rapid change of flux in an electromagnet when its normal supply switch is opened or closed, a condenser charged to a substantially higher voltage than the normal energization voltage of the magnet is discharged through the magnet substantially simultaneously with the operation of the supply switch, the discharge being in such a direction as to assist the flux charge arising from operation of the supply switch. As applied to the simultaneous control of an electromagnetically-operated friction clutch 10, 17, 23 for coupling an output shaft 12 to a driving member 11, and an electrically-operated friction brake 23, 26, 35 for the shaft 12, the windings 17, 35 are normally energized from a low-voltage source 39, 38 and condensers 63 are normally charged to high-voltage from a source 67, 68. Upon closure of the " start " button 47, relay 44 is energized, over the normally-closed contacts 48 of " stop " relay 49, thereby completing an energizing circuit for the clutch winding 17 at contact 56, whilst de-energizing the brake coil 35 by the opening of contact 43. To de-clutch the shaft, button 51 is pressed; relay 49 responds, holds-in over contacts 52, opens the clutch-energizing circuit at contacts 54, closes contacts 65 to discharge the condensers 63 through the windings 17, 35 in series, in such a direction as to cause rapid collapse of flux in the clutch and rapid build-up of flux in the brake, and opens contacts 48 in the energizing circuit of relay 44. This relay then drops out, subject to delay by a condenser 57, and applies normal energization to the brake winding 35 by closure of contacts 43, whilst de-energizing relay 49 by opening of contacts 56, which also maintain the clutch deenergized upon re-closure of contacts 54.
Patent GB-588569-A (GB)
Title: Sleeve valve mechanism of internal combustion engines
IPC: F01L5/10
Filed: 1944-11-09
Abstract: 588,569. Sleeve-valve engines. BUNN, G. Nov. 9, 1944, No. 22035. [Classes 7 (ii) , 7 (v) and 7 (vi)] In a sleeve-valve engine, separate rows of inlet and exhaust ports 1, 2 are uniformly distributed around a cylinder liner and the sleevevalve, which moves as indicated by the arrows, has one set of ports 4 co-operating therewith. The sleeve-valve may have additional exhaust and inlet ports 8, 11 which are uncovered by the piston. The cylinder liner may be formed as a stationary sleeve, angularly adjustable for reversing the engine.
Patent GB-802236-A (GB)
Title: Apparatus for continuously feeding moist, finely divided solid material into a stream of gas
IPC: B65G33/00
Filed: 1957-07-11
Abstract: 802,236. Pneumatic conveyers; screw conveyers. STAMICARBON N.V. July 11, 1957 [July 11, 1956],No. 22038/57. Class 78 (1). Moist finely-divided solid material is conveyed from a chamber 1 at the bottom of a hopper 2 through a cylindrical passage 5 and chamber 8 to a conduit 10 by a ribbon conveyer 4 and a screw conveyer 5a. The pressure of the material in the passage 5 opens a valve 6 which is loaded by a weight 7a. The chamber 8 is of inverted drop shape and has a small outlet 9.
Patent GB-1190802-A (GB)
Title: Improvements in or relating to Sheet Thickness Control Systems
Inventor: DRAGONETTE ANTHONY JOHN
IPC: B21B37/16
Filed: 1967-05-11
Abstract: 1,190,802. Automatic thickness control. HARTE & CO. Inc. May 11, 1967 [May 13, 1966], No.22039/67. Heading G3R. Sheet material after manufacture is pulled from calender rolls by a pick-off roll partly wrapped by the sheet, and the difference between the signal from a detector responsive to sheet thickness downstream of the pick-off roll, and a reference signal, automatically controls the speed ratio of the rolls to maintain thickness constant. As shown, plastics material in a semi-liquid state is fed to a set of driven calender rolls 2, 3, 4, 5 to form a sheet which passes round roll 5 and is pulled off by a rubber surfaced friction roll 6. The sheet then passes through driven embossing and cooling rolls 10, 11, 12 on its way to a driven wind-up roll 13. Back-scatter radiation gauges 14, 15 automatically control, through controllers 21, 22, screw-down units 23, 24 which adjust the gap between rolls 4, 5 and thereby maintain a constant thickness of material on roll 5. Pick-off roll 6 runs at a higher speed than roll 5 so that the material is reduced in thickness by stretching, and the wind-up thickness is measured by a radiation gauge 26 which repeatedly scans across the sheet and supplies signals which are averaged at 32 to control a servo-operated speed regulator 35 for a D.C. motor 38 driving roll 6 so that wind-up thickness is maintained constant. This regulator operates intermittently with intervals allowing sufficient time for the effect of each correction to be felt by detector 26 before the next correction. Scanning of radiation gauges 14, 15, and additional control of bending or axial position of the calender rolls is referred to,
Patent GB-319106-A (GB)
Title: Improvements in a wrist watch
IPC: G04B37/14
Filed: 1928-07-30
Abstract: 319,106. Manheimer, A. E. July 30, 1928. Cases, watch.-Improved means for attaching a strap or bracelet 5 to a, wrist watch comprise slots 6, at opposite ends of the watch, of keyhole section. These slots are formed in the main part 2 of the case and into them are slid the loops 7 at the ends of the strap 5. A pin 8 with head 10 is then inserted into each loop and retained in position by a cut-out shoulder 13 on the head 10 being engaged by the bezel 4. The head 10 is flush with the casing, the remainder of the attaching means being entirely concealed. If the watch is to be worn as a pendant only one connection 6, 8 is used. For a metal bracelet, Fig. 8, the, solid enlarged ends 14 of the bracelet dispense with the pins 8. In a modification, the locking means 10, 13 are replaced by a lug on the pin 8 engaging a recess in the case. In a further modification, spring means are used to maintain this lug and recess connection.
Patent GB-1524095-A (GB)
Title: Malfunction indication apparatus for use in a crt deflection circuit
IPC: H03K4/08
Filed: 1976-05-27
Abstract: 1524095 Detecting excess EHT SONY CORP 27 May 1976 [3 June 1975] 22132/76 Heading H4T Apparatus for detecting an error condition in the deflection circuit of a C.R.T. comprises a filter responsive to higher frequency components which occur in the retrace signal under such conditions. The circuit includes a terminal 1 at which the horizontal sync. signal is received, a voltagecontrolled oscillator 3, an automatic frequencycontrol circuit 2 and a horizontal drive circuit 4. During the trace signal, switching transistors 5a is non-conductive and current flows through primary 6a of EHT transformer 6 and damping diode 5b. As the signal increases in amplitude, the diode approaches cut-off and the transistor is turned on by a pulse from the oscillator 3. A current flows through the transistor until the pulse terminates, whereupon the rapid decay of current causes a high-voltage pulse in the primary 6a. The secondary 6b forms with capacitor 5b a resonant LC circuit which is excited by the flyback pulse, but which is damped by the diode 5b such that only one half-cycle of oscillatory current is produced. If the capacitor becomes disconnected, the capacitance of the LC circuit is greatly reduced and a pulse of abnormally high frequency is produced in the secondary 6b. This results in production of an abnormally high EHT. The detection means comprises an RC filter 10a, 10b responsive to the abnormal high-frequency component. The output of the filter is rectified by circuit 11, 13, 14 and applied to the base of PNP transistor 12 which thereupon connects the oscillator 3 to the powersupply terminal 7 through resistance 15. The frequency of the oscillator increases, resulting in premature turn-off of the switching transistor 5a. This results in a decrease in the retrace pulse amplitude with consequent reduction of the EHT. In an alternative arrangement (Fig. 3, not shown), the transistor 12 is replaced by a NPN transistor which connects the output of the oscillator to earth when switched on.
Patent GB-860411-A (GB)
Title: Stabilized polyoxymethylene compositions
IPC: C08K5/13
Filed: 1957-07-12
Abstract: An anti-oxidant for polyoxymethylenes having molecular weights of at least 15,000 comprises a bis-phenol compound of one of the following formulae <FORM:0860411/IV (a)/1> where R=methyl, ethyl or propyl, and R1= alkyl. Compositions of the polymer and antioxidant also preferably comprise a synthetic polyamide as heat-stabilizer, as disclosed in Specification 860,410.  The polyoxymethylenes may be chain-terminated by hydroxyl, ether or ester groups, the diacetate being specified.  The amount of anti-oxidant is generally from 0.01 to 5% by weight of the polymer.  Examples are 4,41 - butylidene bis - (6 - tert.butyl - 3 - methylphenol), 2,21 - butylidene- and 2,21 - ethylidenebis - (4 - methyl - 6 - tert. butyl phenol), 2,21-butylidene bis-(4,6-dimethyl phenol) and 2,21-butylidene bis-(4-tert. butyl-6-methyl phenol).  Other phenolic compounds are given for comparison.  The polyamide stabilizer used in the examples is a terpolymer of caprolactam, polyhexamethylene adipamide and polyhexamethylene sebacamide.  The compositions are useful for the manufacture of pressure containers, films, fibres, filaments, sheets, rods, tubes, tapes, bottles, toys, gears and dishes.
Patent GB-627930-A (GB)
Title: Improvements in or relating to the stabilisation of asym-dichloroethylene
IPC: C07C17/42
Filed: 1947-08-11
Abstract: Asym-dichloroethylene is stabilized against polymerization and oxidation by incorporating therein isopropylamine in, e.g. amounts of 0.005 to 0.2 per cent by weight of halogenide.  The stabilizer is effective at elevated temperatures, in daylight and in distillation processes.  Inert materials for use with the stabilized compound include glass, stainless steel, nickel, enamelled iron, and "Monel" metal ("Monel" is a Registered Trade Mark), but mild steel, zinc, lead, aluminium and copper are liable to attack and to shorten the effective period of stabilization.
Patent GB-996811-A (GB)
Title: Hollow box-shaped toy building elements
IPC: A63H33/06
Filed: 1964-06-04
Abstract: 996,811. Toy building elements. H. HASEL. June 4, 1963 [June 9, 1962], No. 22248/63. Heading A6S. A toy building element has a hollow box shape, an open side, and grooves or ribs within parallel to said open side to engage ribs or grooves, respectively, on studs on the opposite face of a similar box-shaped element.
Patent GB-802709-A (GB)
Title: Suspension mounting for containers
IPC: F17C13/08
Filed: 1956-07-18
Abstract: 802,709. Storing gases under pressure. LORENTZEN, H. L. July 18, 1956 [July 19, 1955], No. 22300/56. Class 8(2). [Also in Groups XXIX and XXXIII] A container in the form of a body of revolution, e.g. a spherical container for condensed gases, is secured to a support by a horizontal tubular link coaxial with the container and connected to the container and support at positions spaced along its length. The Figure shows in sectional elevation a spherical container 1 secured to a supporting structure 2 such as a ship's hull by means of a short cylindrical link 3 welded to a collar 6 on the container and hinged at 8 to the support, the hinge allowing for changes in container size due to temperature changes ; the hinge may be hollow and fluid-filled to regulate its temperature.
Patent GB-199637-A (GB)
Title: Improvements in fastenings for clothing
IPC: A44B17/00
Filed: 1922-08-17
Abstract: 199,637. Krummenacher, J. Aug. 17, 1922. Stud-and-slot fastenings.-In a stud-andslot fastening in which the shank of the stud engages in an openended loop, the legs of the loop are cranked so that the head of the stud, when engaged, does not project beyond the plane of the securing eyes of the loop. The shank c of the stud a is forced past the legs b of the open end of the loop h and is held against accidental disengagement by the resiliency of the legs. These legs b are cranked at f to bring the plane of the securing eyes g above that of the loop h so that the head d of the stud does not project beyond the plane of the eyes g.
Patent GB-942983-A (GB)
Title: Miniature potentiometer
IPC: H01C10/14
Filed: 1960-06-27
Abstract: 942,983. Variable resistors. BECKMAN INSTRUMENTS Inc. June 27, 1960 [March 18, 1960], No. 22367/60. Heading H1S. [Also in Division F2] A potentiometer includes, within a cylindrical cavity formed by a housing, a resistance element overlain by a gearwheel of insulating material on which the movable contact is mounted, the wheel being rotatable, to adjust the potentiometer, from outside the housing. In a plastic or metal housing 11, Figs. 1 and 2, provided with holes 37 and 38 for mounting singly or in a stack, is mounted plastic worm-wheel 15 meshing with the worm 14, and a wire wound resistor 25 snapped into the undercut groove 26, Fig. 4, in plastic member 27. Vibration induced rotation of worm 14 is prevented by the friction of a resilient plastic pin 21 with groove 20. The spring strip contact arm 28 is rotatable by the force-fit resilient engagement of hexagonal shaped protrusion 29 with a circular recess in wheel 15, the spring 30 acting as a slip-ring connection. Wires 41 and 45 contact the ends of the resistor at points defined by the spacing of pockets 43 in plug 40; a further (centre) tap can be provided by conductor 50 which passes through groove 35 and hole 36. Another embodiment (Fig. 6, not shown), employs terminals suitable for connection to printed circuitry; member 27 and one portion of housing 11 may be formed as a single moulded plastic unit, and a ceramic resistor element may be employed; a stop member (see Figs. 11 and 12, not shown, and Division F2), may limit the rotation of wheel 15. A further embodiment employs for wheel 15 a smooth disc of PTFE, with which the worm engages by producing temporary tooth-like deformation. Specifications 874,768 and 942,984 are referred to.
Patent GB-625631-A (GB)
Title: Improvements in boiler dampers
IPC: F22B7/00
Filed: 1947-08-12
Abstract: 625,631. Dampers. CAMPBELL, A. Aug. 12, 1947, No. 22386. Addition to 536,314. [Class 51 (i)] [Also in Group XXVI] The sealing elements'for sliding dampers described in the parent Specification are pressed against the edges of the damper by balls or rollers under the action of gravity. The damper 1 slides in channels 3 in each of which sealing strips 5 and balls or rollers 8 are accommodated. A vertically sliding damper 1 (Fig. 1) is provided with a sealing element 5 which is pressed against the edge 2 of the damper 1 by balls or rollers 8 disposed on sloping shelves 7 within the channel 3. A horizontally sliding damper (Fig. 3) is provided with balls or rollers 8 accommodated in pockets 9 within the channels 3 and arranged at an angle to the horizontal so that the sealing strip 5 is pressed against the edge 2 of the damper 1. The invention may be applied to a vertical damper which slides horizontally balls or rollers being provided to bear against a sealing strip 5 along the top edge of the damper only, the weight of the damper pressing against a sealing strip along the lower edge (not shown.)
Patent GB-491269-A (GB)
Title: Improvements in or relating to valve gears for piston steam engines
IPC: F01L31/16
Filed: 1937-08-16
Abstract: 491,269. Engine valve-gear. SCHWEIZERISCHE LOKOMOTIV-UND MASCHINENFABRIK. Aug. 16, 1937, No. 22510. Convention date, Aug. 20, 1936. [Class 122 (ii)] A cam is provided with the ordinary cam surfaces b .. e for normal running, and a cam surface f which extends over an angular range of at least 90‹ and is of reduced lift h<2>, for starting. In the event of the engine running away on starting so that, e.g. the wheels of the locomotive slip, the steam supply is throttled so that the draw torque is decreased automatically and harm avoided.
Patent GB-884447-A (GB)
Title: Improvements in or relating to metal working
IPC: B23P25/00
Filed: 1958-01-03
Abstract: 884,447. Metals cutting and working; altering physical properties; welding by fusion. BLECHNER, H. Jan. 3, 1958 [Jan. 4, 1957; Jan. 12, 1957], No. 22514/61. Divided out of 884,446. Drawings to Specification. Class 83 (4). A method of working metal comprises heating the metal to above the critical temperature or to above the melting point by friction caused by rapid relative rotation between the metal and a tool, the tool being a steel disc having a bevelled edge. The tool may have a smooth, ground, polished or honed working surface and may rotate at a peripheral speed of 80 m./sec. The process may be used to cut and heat-treat the metal at the same time or may be used to weld two pieces of metal together.
Patent GB-603572-A (GB)
Title: Improvements in trawling gear
IPC: A01K73/02
Filed: 1944-11-16
Abstract: 603,572. Trawling gear. DEKKER, J. Nov. 16, 1944, No. 22643. [Class 48] The foot rope 10, of a trawling net, is held away from the sea bed, preventing wear, by means of an-auxiliary rope 13, in advance of 10, on which are mounted bobbins 14. These also serve to frighten fish from the sea bed, causing them to rise over the bobbins and enter the mouth 9 of the net. Rollers 12, as described in Specification 583,678, may be provided. An auxiliary head rope 16 is preferably connected to otter boards 3, 4, by bridles 18, 19, 21, 22 and a kite 20.
Patent GB-189229-A (GB)
Title: Improvements in heddle frames for looms
IPC: D03C9/06
Filed: 1921-08-26
Abstract: 189,229. Brintons, Ltd., and Brinton, C. C. Aug. 26, 1921. Healds.-A healed-frame for looms for carpet weaving comprises several frame members dispcsed in a single guide 9 at each side of the machine. Each frame member is formed of a deep metal member 1, to which is riveted end members 2, forked at 3, and narrow intermediate supports 5. The upper ends of the members 2 are connected by a bar 4, between which and a rod 7, supported close to the member 1 by straps 8, extend the gear wires. The supports 5 of the outer frames may be chamfered as at 10, and each frame member may be provided with a lug 12 connected to a rigid operating-rod 14.
Patent GB-730793-A (GB)
Title: Improvements in method of making a polyene aldehyde or a derivative thereof
Filed: 1952-09-10
Abstract: An a ,b -unsaturated completely conjugated 1-cyclohexen-1-ylic polyene aldehyde or a derivative thereof is obtained by treating a 2-cyclohex-1-ylidenic aldehyde of the formula <FORM:0730793/IV (b)/1> wherein R is an unsaturated aliphatic hydrocarbon radical containing at least five carbon atoms and including a single chain-CH2-group, said -CH2-group being in an even-numbered position from the ring, with a basic catalyst, e.g. inorganic hydroxides, salts of strong bases and weak acids, and organic bases such as amines, thereby converting said 2-cyclohexen-1-ylidenic aldehyde to an a ,b -unsaturated completely conjugated 1-cyclohexen-1-ylic aldehyde containing no -CH2- group in the aliphatic hydrocarbon radical.  The conversion may be effected in benzene, petroleum ether, ethyl ether or ethanol, for example by filtering through a body of alkaline adsorbent, such as sodium aluminium silicate adsorbent. As starting materials there may be used compounds of the above formula having a -CH2- group in the second, fourth, sixth, and eighth position from the ring.  Subsequently the Vitamin A aldehyde may be reduced to Vitamin A alcohol by means of basic reducing agent such as aluminium isopropoxide and isopropyl alcohol or by means of a soluble metal hydride.  Materials suitable for catalysts are sodium hydroxide, potassium hydroxide, potassium acetate, sodium acetate, pyridine, lutidine, picolines, aniline, morpholine, sodium ethylate, aluminium alkoxides, ammonium hydroxide, piperidine and alkaline soaps.  9 - (2,6,6 - Trimethyl - 2 - cyclohexen - 1 - ylidene) - 3,7 - dimethyl - 2,4,6 - nonatriene - 1 - al is obtained by condensing b -ionone with a propinyl halide to form a propinyl carbinol, which is condensed with a dialkyl acetal of b -keto-butyraldehyde followed by hydrogenation of the acetylenic linkage to form Vitamin A diacetal-2,3,6,7-tetrahydro-3,7-diol, followed by dehydration of this diol with phosphorous oxychloride and pyridine to a compound of the formula  <FORM:0730793/IV (b)/2> The enol ether is then hydrolysed with mineral acid to a compound of the formula <FORM:0730793/IV (b)/3> 9 - (2,6,6 - Trimethyl - 2 - cyclohexen - 1 - ylidene) - 3,7 - dimethyl - 3,5,7 - nonatriene - 1 - al is obtained by condensing b -ionone with propinyl halide to form the propinyl carbinol, which is dehydrated and condensed with a dialkyl acetal of b -keto-butyraldehyde to form a 3 - hydroxy - 2 - cyclohexen - 1 - ylidenic acetal, hydrogenating the acetylenic linkage to an olefinic linkage and dehydrating and hydrolysing to produce <FORM:0730793/IV (b)/4> Similar compounds having the -CH2 group in the 4- or 6-position are obtained by varying the order of reaction.
Patent GB-1391675-A (GB)
Title: Control apparatus
IPC: G03C3/00
Filed: 1972-05-15
Abstract: 1391675 Photo-electric apparatus EASTMAN KODAK CO 15 May 1972 [13 May 1971] 22751/72 Heading G I A [Also in Division G3] The time taken to spool successive lengths of photographic film 10 is kept constant by clocking the duration of each spooling operation and adjusting the speed of the spool motor 40 to reduce any error between the clocked duration and a reference duration signal. In Fig. 1, clock pulses are counted at 47 from the time a notch 14 in the film is detected by a photo-cell PC- until a comparator 50 detects that the spool motor 40 has stopped in response to the notch being detected by photo-cell PC-3. The count in 47 is compared with high and low limits, a counter 51 being adjusted up or down if a limit is exceeded, and converted to an analogue signal for use as a reference for a D/A converter 38 supplying the speed determining input to the motor 40.
Patent GB-825983-A (GB)
Title: Tool for cutting a braided conductor
IPC: H01R43/00
Filed: 1957-07-18
Abstract: 825,983. Pliers. AMP Inc. July 18, 1957 [July 18, 1956], No. 22795/57. Class 61. A tool for cutting a braided conductor lying above an insulating layer of rubber surrounding a cable, comprises at least two toothed blades 20, 22 adapted to be brought together so that the crests of the teeth lie on a circle of radius substantially equal to that of the insulating layer, the teeth having blunts crests 42 with sharp lateral cutting edges 41 formed by acute angle notches 18. As shown the toothed blades 20, 22 are mounted on the pivoted handles 12, 14 of a pair of pliers. The tool is closed on the cable and then rotated relatively thereto to cause the sharp edges 41 to sever the braided conductor. In a modification lands are provided between the teeth.