baber/WOPTO huggingface dataset:
Patent GB-853404-A (GB)
Title: Multiple switching circuit
IPC: G08C15/08
Filed: 1959-04-09
Abstract: 853,404. Switching circuits. BECKMAN INSTRUMENTS Inc. April 9, 1959 [April 10, 1958; March 17, 1959], No. 12103/59. Class 40(6). [Also in Group XXXV] A switching circuit for connecting one of a plurality of inputs to an output includes a unity gain amplifier a switch being in series with each of the inputs for connecting one of them to the amplifier input and disconnecting the remainder. The output of the amplifier is connected to the remaining inputs to eliminate the potential differences which would otherwise exist across the disconnected switches. Fig. 1 shows a switching circuit for connecting any one of inputs A1 - An; B1 - B3 to an output 15, 16. A unity gain potentiometric negative feedback amplifier 14 has its input selectively connected to a given input source and its output, which is 180 degrees phase shifted with respect to the input, connected to the output terminals and also via switches to the input leads. In the example shown the source B2 is applied to the input of the amplifier via closed switches 10B2, 12B and the remaining input switches 10, 12A &c. are opened. The output of the amplifier is applied via closed switch 17A back to the input so that any signal which may have appeared across the open switch 10 due to imperfections in the switches is balanced out and does not appear at the output 15, 16. In a modification shown in Fig. 2 in which the switches are represented by a switch in series with a small value resistor such as 34 and a large value shunt resistor 32, input voltages E1, E2 may be selectively applied to the amplifier 26 and thus to the output circuit 30, 31. In the example shown it is required to connect the source E1 to the output so that switches 22, 23 are closed and switches 24, 25 are opened and the effects of the non-selected input signals are eliminated from the amplifier input by the closure of switch 29, which connects the source E2 to the low impedance side of amplifier 26. There is a voltage drop across switch 29 and because of the finite impedance of switch 24 some leakage current exists but this has no influence on the output voltage because of the direct connection between the switch 29 and the amplifier output the output impedance of the amplifier being low. The amplifiers 14, 26 have a relatively high input impedance and relatively low output impedance and the switches may be of any type such as metallic contact, vacuum tube, or semi-conductor devices.
Patent GB-118434-A (GB)
Title: Improvements in Appliances for Casting Metal Ingots.
Inventor: HODGSON LEONARD STANLEY
IPC: B22D9/00
Filed: 1917-08-24
Abstract: 118,434. Hodgson, L. S. Aug. 24, 1917. Moulds.-Pouring blocks which also serve as headers for use in casting small ingots of highspeed steel &c. are made, singly or in sets, with a bell mouth larger than the end of the mould in which the block fits. The blocks have vent holes k<3> and the web k<1> connecting two or more blocks may have a groove k<2> to drain away any metal spilled thereon.
Patent GB-1065188-A (GB)
Title: An ethylamino thienyl cyclohexanone
IPC: C07D333/22
Filed: 1966-03-18
Abstract: The novel compound of the formula <FORM:1065188/C2/1> and its acid addition salts are prepared either by thermal rearrangement of a compound of formula <FORM:1065188/C2/2> or by ethylation of the corresponding N-unsubstituted amine, optionally followed by salt formation.  2 - Amino - 2 - (2 - thienyl) - cyclohexanone, employed in the second process above, is prepared by thermal rearrangement of 1-hydroxycyclopentyl 2 - thienyl ketimine, which is prepared from its tetrahydropyranyl ether by action of HCl followed by basification, and this ether is prepared by reaction of 2-thienyl lithium with the tetrahydro-2-pyranyl ether of cyclopentanone cyanohydrin.  1 - Hydroxycyclopentyl 2 - thienyl N - ethylketimine used in the second process above is prepared either by reaction of ethylamide and 1 - hydroxy - cyclopentyl 2 - thienyl ketone, which is prepared by action of 2-thienylmagnesium bromide on the tetrahydro-2-pyranyl ether of cyclopentanone - cyanohydrin followed by hydrolysis, or by action of ethylamine on 1 - bromocyclopentyl - 2 - thienyl ketone which is prepared by bromination of cyclopentyl 2-thienyl ketone.  2 - Thienyl lithium is prepared from thiophene and butyl lithium.  The compound of the first formula above and its acid addition salts may be administered orally or parenterally as anaesthetics or anti-convulsants.
Patent GB-1234891-A (GB)
Title: Bonding press
IPC: A41H43/04
Filed: 1969-03-07
Abstract: 1,234,891. Laminating press. KANNE. GIESSER MASCHINENFABRIK G.m.b.H. 7 March, 1969 [11 March, 1968], No. 12267/69. Heading B5N. A press for bonding together pieces of fabric comprises a conveyer 12 arranged to convey superimposed pieces of fabric 10 and passing between a lower stationary platen 14 and an upper heatable press platen 13 adapted to be moved alternately towards and away from the lower press platen, a continuous band 15 of adhesive repellent material having one run passing between the platens, between the conveyer and the upper platen so as to overlie any pieces of fabric being conveyed between the platens by said conveyer, and a plurality of continuous filamentary guide elements 16 of adhesive repellent material, each having a run passing between the press platens between said conveyer and said continuous band so as to be between said continuous band and any pieces of fabric being conveyed by said conveyer, said conveyer, said continuous band and said guide elements being arranged to be driven intermittently in synchronism with said upper platen, so as to move only when said platens are moved apart and so that when being moved, the conveyer, said continuous band and said guide elements pass between said press platens at the same velocity in the direction of conveyance of said conveyer and parallel therewith and with each other, said continuous band being arranged to be deflected e.g. at point 17 from the conveyer on the exit side of the press and said guide elements being arranged to travel, on the exit side of the press beyond the point of deflection of said continuous band, in a direction that differs from the direction of said continuous band after the latter has been deflected. The guide elements are of temperature-resistant material, may be in the form of thin narrow tapes or wires tensioned by tensioning device 23 and operate to pull the bonded pieces of fabric from the continuous band without themselves sticking to the fabric which continues to travel on the conveyer; supplementary separating means e.g. a blowing tube 19 or plate may be provided between 17 and 18. A brush 20 with its axis of rotation transverse to the direction of travel of band 15 and elements 16 may be provided to clean the band and the elements. The conveyer is preferably an endless belt; alternatively, it may be a sliding frame.
Patent GB-372925-A (GB)
Title: A packing for photographic plates
IPC: G03C3/00
Filed: 1931-04-27
Abstract: 372,925. Packing photographic plates. 1. G. FARBENINDUSTRIE AKT.-GES., Frankfort-on-Main, Germany. April 27, 1931, No. 12384. Convention date, April 26, 1930. Addition to 333,864, [Class 98 (ii), Photographic processes &c.]. [Class 98 (ii).] The plate packing claimed in the parent Specification is modified by enclosing a pair of plates, with their emulsion sides facing each other in (1) an opaque paper strip 1 having terminal and medial folds 2, 3 for separating the plates at opposite ends, and a flap 1a which wraps round the edges of the plates which are separated by the fold 2, and (2) a second opaque paper strip 6, preferably red, which wraps round the pair of plates transversely to the first strip to cover the edges left bare by that strip. These edges then receive the known sheet-metal channel strips 7, the free ends of the strip 6 are torn off, and the assembly is finally inserted in an envelope 8.
Patent GB-1026687-A (GB)
Title: Improvements in wheeled trolleys
IPC: B62B3/06
Filed: 1963-03-28
Abstract: 1,026,687. Hand trucks. R. A. NEAVERSON and P. A. NEAVERSON. March 24, 1964 [March 28, 1963], No. 12384/63. Heading B7B. A jacking unit has a body part 3 supported on fixed-axle wheels 5 and on a wheel 12 carried by a yoke pivoted to the body and movable to pre-set positions determined by the recesses 9, 10 engaged by the spring-urged rod 15. The load-engaging recess 18 and spigot 19 for engagement with the spigot 28 and recess 27 on the truck 24 are mounted on a channelshaped part 17 pivoted to the body 3 so as to be movable between the lower position shown in Fig. 3 to a raised position (Fig. 5) in which it is supported on struts 20.
Patent GB-382563-A (GB)
Title: Improvements in joints for artificial limbs
IPC: A61F2/64
Filed: 1932-04-29
Abstract: 382,563. Artificial limb joints. DESOUTTER, C. and DESOUTTER BROS., Ltd., 73, Baker Street, London. April 29, 1932, No. 12399. [Class 81 (ii).] A joint for an artificial limb having upper and lower portions comprises a spindle rigidly connected to one portion and upon which the other portion pivots, and a spring located wholly within the upper portion connected at one end to the pivoting portion and, at the other, to a member forming part of or secured to said spindle and located at a suitable distance from its axis, whereby said spring tends to hold the limb in its extended position. A lower leg portion 2 is rigidly secured to a spindle 3 upon which the upper leg 1 pivots, for example on ball bearings within housings 4. Secured to the spindle are plates 5 fitted with distance bars 6a, 6b and having a pin 7 to which a helical spring 8 is connected, the other end of said spring being attached to a bracket 9 in the upper leg 1. Rotation of the lower leg in a clockwise direction is prevented by a check cord or stop in the usual manner. The control cord may be retained by the bar 6b and pass over a roller rotatable on the bar 6a. The spring is adapted to approach or pass over a dead centre to prevent undue reaction against bending of the lower leg as in sitting. For this purpose the spindle 3 may have a cranked portion 10, or the spring 8 may be connected to a curved link 11, Fig. 3, or a ring surrounding the spindle. The spring 8 can be replaced by a strand or strands of resilient material such as rubber, or a compression spring could be used connected to a point on the left-hand side of the portion 1 as shown in Fig. I. The spring may be connected to one of the distance bars 6a, 6b and the pin 7 dispensed with.
Patent GB-130168-A (GB)
Title: Improvements in Methods of Making Casings of Pneumatic Tires for Vehicles.
Inventor: HOPKINSON ERNEST
IPC: B29D30/06
Filed: 1918-07-30
Abstract: 130,168. Hopkinson, E. July 30, 1918. Vulcanizing tyres.-Relates to the manufacture of tyre casings wherein fluid pressure is applied directly to the interior of the casing to support same during vulcanization, and consists in rendering the inner layer or stratum impervious to the fluid by partial vulcanization. Preferably, the inner layer is subjected to partial vulcanization prior to the application of the outer layers.
Patent GB-1500376-A (GB)
Title: Transistorised memory cell and an integrated memory using such a cell
IPC: H03K3/356
Filed: 1975-03-25
Abstract: 1500376 Memory cell THOMSON-CSF 25 March 1975 [26 March 1974] 12532/75 Heading H3T A transistorized memory cell comprises first and second FET's T 0 , T 1  that form a bi-stable with two input/outputs C, D and which have their sources connected to the same word line Mi and third and fourth FET's T 10 , T 11  connected as source followers with their gates connected to the input/outputs D, C and their sources connected to first and second write-in/read out lines Ki, Ii. Such cells may be connected in an array of p times q to form a memory. The word lines Mi, Mj in such a memory are coupled through resistors R, to a first D.C. supply V 1  and are either floating or earthed through an address FET Ei, Ej and as shown may be clamped by diodes Si, Sj to a second positive voltage V 3 . The two write-in/read-out lines of each column of memory cells E 0 , L 0 , E 1 L 1  in a memory are connected through a resistive load R 3  to a negative supply V 2 , each line floating or earthed under the control of an FET. TE 0 , TE 1 . To write a logic 1 into the memory TE 1  is turned on by a positive pulse at Q 1  and this causes current to flow from the gate of T 11  to its drain along write-in line E 1 L 1  thus pulling point C low and the bi-stable T 0 T 1  in the column connected to the word line which is floating holds this condition when the pulse ceases. To read out from a cell the transistor corresponding TAi, say, is turned off, point B floats up till clamped by the diode and both C and D, the outputs of the bi-stable T 0 T 1 , follow suit. The transistors T 10 T 11  conduct and transfer the voltage difference to the read-out lines E 0 L 0 , E 1 L 1 , being sensed by a sense amplifier (not shown) connected to the outputs L 1 L 0 . Transistors TC 0  and TC 1  form a bi-stable trigger stage and serve to make the readout voltages dependent mainly on their characteristics and only weakly dependent on the characteristics of the memory cell transistors T 10 , T 11 .
Patent GB-1099019-A (GB)
Title: Wafer feed device
Inventor: CRISPE STANLEY WILLIAM
IPC: A21C15/00
Filed: 1965-03-25
Abstract: 1,099,019. Apparatus for making sandwich biscuits. T. & T. VICKERS Ltd. March 10, 1966 [March 25, 1965], No. 12596/65. Heading A2A. [Also in Division B8] . In apparatus Fig. 1, for making laminated sandwich biscuits, wafers are fed, one at a time, as by a conveyer 8 unloading a magazine 6, on to the upper run of an endless conveyer 10, at a wafer-receiving and wafer-delivering station 24, where wafer-sensing devices 46 and a counter 44, e.g. an electronic counter, are provided. A source of radiation, such as light, and a radiation senser, such as a photo-electric cell, may constitute the sensing devices 46. The counter 44 is set to allow a predetermined number, e.g. three, wafers to be delivered from the upper run of the conveyer 10, on to the upper run of an endless conveyer 12, which delivers the wafters to a coating device 2, where a filling substance, such as cream or jam, is spread on each wafer. The coated wafers are then passed to a laminating device 4, where they are stacked to form an incomplete sandwich biscuit, which is conveyed, on the upper run of an endless conveyer 14, to an assembly point 16. When said predetermined number of wafers have been delivered on to the conveyer 12, the counter 44 e.g. acting through an adjustable electronic time delay, sends a signal to a waferdeflecting device, at the station 24, causing this device to deflect the next wafer from the upper run of the conveyer 10 on to an upper endless conveyer 18, which carries this uncoated wafer to the assembly point 16, where it is deposited, e.g. through an electrically or pneumatically operated gate (not shown) controlled by a sensing device 40 (which synchronise the final assembly) on top of the incomplete sandwich biscuit, to complete the biscuit e.g. a four-wafer biscuit. The deflecting device may comprise a roller 20, which contacts the underside of the upper run of the convey 10, and is secured to the rod of a hydraulic or pneumatic ram. The said signal causes the ram to raise the roller 20 and the upper run of the conveyer 10. When said next wafer has thus been transferred on to the conveyer 18, the said conveyer run is lowered to its normal position. In an alternative construction, Figs. 3 and 4, the conveyer 10 comprises two spaced-apart, parallel endless belts, and the deflecting device comprises a roller 34, which is raised between the upper conveying runs of said belts to make direct contact with said next biscuit 42. In a further alternative construction (not shown): a blast of air is used to raise said next biscuit.
Patent GB-593580-A (GB)
Title: Improvements in or relating to machines for cutting slices from rolls of dough to make buns and the like
IPC: A21C3/06
Filed: 1944-07-03
Abstract: 593,580. Dough-rolling and slicing machines. LINNEMAN, R. H., and GANNON, J. J. July 3, 1944, No. 12622. [Class 87 (ii)] A bun-making machine is adapted to roll spirally a sheet of dough, move the roll along in the direction of its axis and sever slices from the roll with rapidly operating shears. A sheet of dough 58, Fig. 1, moves along an endless belt 12 to a roller 24 which is rotated in the direction shown by machinery which also serves to operate the shears and the belt. This roller is disposed at an angle to the sides of the belt so. that the dough will be formed into an elongated spiral roll 59 which will move continuously in the direction of its axis past the shearing blades 34, 35. These blades are specially shaped, Fig. 4, to encompass the roll 59 and have sharpened edges 45. They are mounted on concentric shafts 36, 37 driven to rotate the shears in opposite directions. To enable slices of different sizes to be severed the speed of the shears can be varied by manually adjustable mechanism. In a modification, Figs. 7, 8, the blade 135 is fixed and the blade 134 coupled to the shaft 36 by a spring 60. A spring-loaded pin 62 stops the blade in the position shown and prevents it from moving until the spring 60 is wound up sufficiently to cause the blades 134 to move the pin 62 out of its path. The unwinding of the spring then causes the blade to shear rapidly through the roll and to rotate into its initial position against the stop 62. In a modification (not shown) the blade 134 is coupled by two springs to a pin passing through the shaft 36. Either of these trigger devices can be applied to both blades instead of to one. In a further modification, Fig. 11, the cranks 72, 72 fixed to the shafts. 73, 73 have pins 71, 71 engaging in slots 70, 70 on the shears. Rotary oscillation of the shafts 73 causes oscillating motion of the blades about a pivot 74.
Patent GB-1414712-A (GB)
Title: High pressure seals
IPC: F42B3/107
Filed: 1973-03-15
Abstract: 1414712 Moulding seals in containers A L LOVECY 21 May 1974 [15 March 1973] 12663/73 Heading B5A [Also in Division F3] A method of sealing a metallic member 3 in a metallic wall 1 of a container, particularly an electrode in the casing of an electrical detonator, comprises: forming a hole 2 in the wall which is greater in length than its average width; positioning in the hole the metallic member, which should be of a high tensile metal, such as steel, and whose cross-sectional area is more than half although not as much as the hole; and extruding an electrically insulating plastics material 5 under elevated temperature and pressure so that it fills the hole around the metallic member. The plastics material may be a thermoplastics material, e.g. polyethylene, or a thermosetting material: it is extruded by means of a plunger 4.
Patent GB-601012-A (GB)
Title: Electrical frequency comparison apparatus
IPC: H04N5/12
Filed: 1944-07-04
Abstract: 601,012. Automatic frequency control. FARNSWORTH TELEVISION & RADIO CORPORATION. July 4, 1944, No. 12721. Convention date, April 30, 1943. [Class 38 (iv)] [Also in Group XXXVI] In a phase discriminator for synchronizing an oscillator with a standard source, e.g. the supply mains, a sawtooth voltage derived from the standard source and harmonically related thereto, is combined with a series of steep-sided impulses of substantially the same frequency, derived from the oscillator by frequency division and subsequent shaping, the composite wave having pedestal portions which vary in area according to the phase relationship of the two series of impulses, and means being provided for developing from the composite wave a unidirectional voltage corresponding to the area of the pedestal portions. As shown, a high-frequency oscillator 11, Fig. 1, energizes a frequency divider 15 from which television transmitter synchronizing and scanning frequencies are taken. A sub-harmonic of the oscillator frequency substantially equal to twice the frequency of the A.C. mains supply is also derived from the frequency divider 15 and applied over a condenser 16 and resistor 19 to a triode 17 which converts the input to a saw-toothed waveform as shown at 55, Fig. 2. The A.C. mains supply is applied through a transformer 23 to a frequency doubler in the form of a full-wave diode rectifier 26. The rectified output voltage appearing across the load resistor 27 is fed over a condenser 28 to a triode amplifier 29 biassed to operate in the saturation region during a portion of the input cycle. The output from triode 29 thus rendered flat-topped as shown at 47, Fig. 2, is applied through a condenser 34 to a second triode amplifier 35 also biassed to produce saturation during a portion of the input cycle. The output waveform from the triode 35 is as shown at 51, Fig. 2. The outputs of both amplifiers 17 and 35 appear across the load resistor 21 and the composite voltage wave so obtained is applied to an integrating circuit 39, 41 and resistor network 42, 43 whereby a unidirectional voltage appears across the condenser 44 corresponding in magnitude to the area of the pedestal portions 59 of the composite wave shown at 58, Fig. 2. This unidirectional voltage which thus corresponds to the phase displacement between the two waveforms 51, 55 is applied over a resistor 45 to the A.F.C. circuit 46 to synchronize the oscillator 11 with the A.C. mains frequency. The amplifier stages 29, 35 being biassed to operate in part under saturation conditions render the arrangement independent of fluctuations in the A.C. mains voltage.
Patent GB-1318678-A (GB)
Title: Homogeneous disintegrator machines
IPC: B01F27/93
Filed: 1972-03-17
Abstract: 1318678 Ball mills; mixing apparatus OLIVER Y BATLLE SA 17 March 1972 [12 Feb 1972] 12738/72 Headings B2A and B1C A stirrer-type mill comprises a rotatable agitator disc 31 and a rotatable tub 24. A tubular first shaft 23 is secured to the bottom of and extends upwardly through the tube and is mounted in bearings 21, 22. A second shaft 27 also mounted in bearings has an upper end secured to a hub 29 with a depending skirt 30 carrying at its lower part the disc 31. A first drive wheel 6 is fixed to and a second drive wheel 8 is rotatably mounted on a motordriven output shaft 5. Rotational drive of the second wheel is selected by operation of a clutch 17. The first drive wheel 6 is coupled to a wheel 28 on the second shaft 27 and the second drive wheel 8 is coupled to a wheel 26 on the tubular first shaft 23. As described the apparatus may be driven by an electric motor or an hydraulic motor 4. A sieve 39 around the upper part of the tub includes larger normallyplugged apertures. When unplugged these permit passage of the grinding balls. The tub is jacketted at 32 and supplied with a refrigerant via a conduit 33. The stirring disc includes cylindrical holes having 30 angled-edges 47, Fig. 3. In operation, when the ground material is to be discharged a wheel 18 is turned rotating a spindle 13, a pair of clamps 10, 11, separate and release a disc 9 so that the pulley 8 becomes free on its shaft and simultaneously the clutch 17 is actuated so that the pulley 8 rotates at the same speed as the shaft 5. The tub is thus rotated to discharge the ground material.