baber/WOPTO huggingface dataset:
Patent GB-1510733-A (GB)
Title: Photographic shutters
IPC: G03B9/62
Filed: 1975-04-17
Abstract: 1510733 Camera shutters WEST ELECTRIC CO Ltd 17 April 1975 [23 April 1974] 16768/75 Heading G2A A photographic shutter comprises shutter blades, Figs. 1A and 1B (not shown), which are movable between an adjustable open position and a closed position by a rotatable stepping motor 10 under the control of circuitry which provides shutter opening pulse signals, the number of which depends upon the brightness of the subject, to the motor 10 to open the blades to provide an appropriate aperture and shutter closing pulse signals to the motor after the blades have been open for a time interval depending upon the brightness of the subject and the blade setting, to close the blades. When switches SW1 and SW2 which are coupled to a shutter release button are closed the brightness of a subject is measured by a photo-cell 37 the analog output of which is converted by an A-D converter 44 into a digital signal. The digital signal is fed to an encoder 45 which encodes the signal into a binary code number and applies an output to a decoder 46 which converts the binary code number into a sexadecimal code number, this resulting in the production of a signal at one of the sixteen output terminals of the decoder in dependence upon the brightness of the subject. The signal from the decoder 46 is applied to a voltage division circuit 42 in which it causes an appropriate one of five transistors Trn to conduct and so in conjunction with a resistor Rn to produce an output voltage which is fed to one terminal of a differential amplifier 19 and which is a measure of the brightness of the subject. The other terminal of the amplifier 19 is fed with a decreasing stepped voltage, see Fig. 3 (not shown), produced by a signal generator 18 in dependence on pulses fed to it from a pulse generator 17. The positive stepped voltage output from the amplifier 19 above the voltage level set by the circuit 42 is converted by a differentiating circuit and an inverter 19' into pulses which are applied to the motor 1 0 to open the shutter blades by a appropriate amount. The signal from the decoder 46 is also applied to an integrator 43 in which it causes an appropriate one of twelve transistors Tran to conduct and so select a resistor Ran to be put in series with a condenser 38 to determine the time interval before an output voltage from the integrator 43 applied to one terminal of a comparator 23 exceeds that applied to the other terminal of the comparator by a voltage divider 25, 26. When this happens a terminal W of the motor 10 which was shortcircuited is opened to pulses from the pulse generator 17 via a condenser 16', the pulses passing to control circuiting of the motor whereby this is rotated to close the blades, see also Fig. 4 (not shown). Switch SW1 is then opened. Thus the aperture provided by the blades is dependent upon the brightness of the subject and the exposure time is dependent on the brightness of the subject and upon the aperture setting of the blades.
Patent GB-447637-A (GB)
Title: Improvements in arc welding apparatus
IPC: B23K9/12
Filed: 1935-05-30
Abstract: 447,637. Uniting by fusion. TENNANT, W. J., 111, Hatton Garden, London.- (Wilson Welder & Metals Co., Inc. ; North Bergen, New Jersey, U.S.A.) May 30, 1935, No. 15798. [Class 83 (iv)] [See also Group XXXV] A pair of electrode holders 6, 17, Fig. 17, are alternately reciprocated into and out of the working position, and as one holder moves into the active position, the other is withdrawn to the inactive position. The holders areoperated by motors 28, 21, fed from resistance bridges 32, 31 under the control of relays 30,29, arranged across the arc. Contacts 45, 46 in the relay circuits are controlled by current coils 33, 34, and are interlocked so that when both coils are de-energized one contact only is closed. As electrode 48 is consumed the holder 17 closes switch 35 and relay 30 is energized to operate its armature to close the circuit of motor 28 to feed the holder 6 to grip electrode 1 and feed it to the arc. Holder 17 subsequently opens switch 37 to insert resistance 39 in the circuit of relay 29 to lengthen the arc which is subsequently transferred to electrode 1. Current relay 34 now opens contact 46 and relay 29 is de-energized and motor 21 withdraws holder 17 to the inactive position. At the top of its travel the holder lifts the armature of relay 29 to stop the motor. In a modification resistances 40, 39 are omitted, the arc being extinguished when switch 37 is opened and a new arc being struck when electrode 1 contacts with the work. The starting and stopping switch 44 comprises a quick make-and-break switch in the circuits of the voltage relays, and a quick make, delay-break switch in the circuits of the motors to prevent a fault in the weld in stopping. Clip-on magazines 2, Fig. 13, containing electrodes are associated with the holders. Levers 7 actuated by the holders operate bell-crank members 8 to feed the electrodes into spring jaws 10 for subsequent gripping by the holders which are provided with jaws operated to grip the electrode and release the stub by means of cams 12 actuated by pivoted members arranged at the top and bottom of the V-shaped guides 26 for the holders. Bands 18 secured to the holders pass over idler drums 20 and drums 19 driven through worm gear 22 by the motors 28, 21.
Patent GB-877765-A (GB)
Title: Improvements in and relating to transformers and choking coils
IPC: H01F27/36
Filed: 1958-05-16
Abstract: 877,765. Transformers. SMIT & CO.'S TRANSFORMATORENFABRIEK N. V., WILLEM. May 16, 1958 [May 29, 1957], No. 15874/58. Class 38 (2). At least one end of an insulating cylinder 5, separating the windings of a transformer and made of layers of solid insulating material, is split into layers 6, 7, 8, 9, 10 which are bent over to form flanges lying over an electrostatic screening ring 4 at the end of winding 2, a conducting or semi-conducting screen 12 being continued into flange 6 and connected either to ring 4, as shown, or to winding 2. Pressure rings 14, 15, 16, 17 are disposed at such a distance from cylinder 5 that when ring 4 moves downwards with shrinkage of the insulation between the turns of winding 2, flange 12a of screen 12 can bend smoothly in a double curve and splitting of the insulation in flange 6 at bend 19 is avoided. A ring of elastic supporting strips may be provided inside bend 19. An earthed screen 11 may also be provided and both screens may be of metal or carbon.
Patent GB-291611-A (GB)
Title: Improvements in or relating to portable boring apparatus in mines
IPC: E21B7/02
Filed: 1927-06-15
Abstract: 291,611. Thomas, W. E. June 15, 1927. Drilling.-A back support, for a portable mining drill comprises a metal pin A which is inserted in a drilled hole in the roof or floor adjacent the face to be bored and is provided with holes 1, 2 either of which may support the end of the drilling apparatus.
Patent GB-369475-A (GB)
Title: Improvements in and connected with vats for the dyeing of materials
IPC: D06B3/26
Filed: 1931-06-01
Abstract: <PICT:0369475/IV/1> <PICT:0369475/IV/2> A dyeing vat is constructed in cast-iron flanged sections 4 each of which is covered with a sheet of asbestos 6 which is covered with a thin sheet of acid-resisting metal 7 turned over the flanges and oxy-welded at the four corners. The sections are then bolted together to form the vat and the joints are made and rendered watertight without riveting or soldering.  Over all is a drum 13 made of acid-resisting material on which the piece to be dyed is placed with its ends joined.  Steam may be introduced through piping 12 into a side compartment connected with the main vat by a perforated plate 11.
Patent GB-540666-A (GB)
Title: Improvements in containers for soaps and toilet preparations
IPC: A47K5/02
Filed: 1940-11-02
Abstract: 540,666. Containers for toilet preparations. PEARS, H. W. K., and SLACK, H. F. Nov. 2, 1940, No. 16024. [Class 18] A container for shaving soap, toilet powder, skin creams, brilliantine &c. consists of a wall a of cellulose acetate film, usually cylindrical, closed at the bottom by a wall e of cork, agglomerate or natural, and having a lid b also of cork with a washer c secured thereto h engaging the mouth of the container. The centre f of the lid may be of thinner cork to provide a recess for a label. The soap cake h or other contents may be supported as shown by the body, or in the case of a shaving stick, by a ring of cork sunk in a groove at the base of the stick and secured by adhesive to the flange c of the lid. The base of the soap stick and the ring may be tapered. The cork may be made water- or grease-proof by impregnation, e.g. with solution of cellulose acetate and sodium silicate.
Patent GB-925316-A (GB)
Title: A thermostatically regulated heating installation preferably for central heating
IPC: F24D19/10
Filed: 1960-05-06
Abstract: 925,316. Heating by circulation of hot water. M. CLAUSEN, [trading as DANFOSS VED INGENIOR M. CLAUSEN]. May 6, 1960 [May 8, 1959], No. 16141/60. Class 64 (2). In a system in which hot water is supplied from a central heating boiler or plant through a pipe 1 to a heating installation including a radiator 3 and a mixing valve 5 and in which a valve 7 is opened automatically, when the water temperature drops, so that the water returns to the source through a water meter 8, there is an extra valve 9 also opened automatically upon a water temperature drop. The extra valve has an area of flow opening different from that of the valve 7 and closes at a different temperature. When, as in autumn or spring, the installation has a low consumption, the valves are adjusted so that the opening temperature of the valve with the smaller maximum opening is greater than the opening temperature of the other valve. In the winter, conversely the adjustment is such that the larger valve opens at a higher temperature than that which causes the smaller valve to open.
Patent GB-280465-A (GB)
Title: Improvements in centrifugal pumps
IPC: F04D29/04
Filed: 1927-06-18
Abstract: 280,465. Dobel, Ltd., J., and Saunders, A. June 18, 1927. Adjusting position of impeller.-A tightfitting bush A is pressed into the end of the pump casing B and is bored to receive the end of the impeller shaft. Lubricant is supplied through the hole F which communicates with a groove G in the casing and grooves H, J in the internal surface of the bush. A screw thread is cut inside the end M of the casing B and a screw plug K is inserted. By means of this the positions of the bush and the impeller can be adjusted; the plug is then locked by a pin passing through holes in the casing and slots in the plug.
Patent GB-355372-A (GB)
Title: Improvements in or relating to sheet-transferring cylinders of printing machines
IPC: B41F22/00
Filed: 1930-05-27
Abstract: 355,372. Printing - machines. LINOTYPE & MACHINERY, Ltd., 9, Kingsway, London, and SAX, C., 346, Rue Dambrugge, Antwerp, Belgium. May 27, 1930, No. 16271. Addition to 267,239, [Class 100 (ii), Printing processes &c.]. [Class 100 (ii).] Set-off, preventing; rotary machines.-In a sheettransfer cylinder 1 of a two-colour printing-machine which is fitted with strips 7 adjustable longitudinally .of the cylinder as described in the parent Specification, supplementary strips 8 are interposed between the ends of the strips 7 in order to prevent fouling of the ends of the sheets in the gap 15 wherein the transfer grippers 4 are arranged. The strips 8 are preferably serrated, and are attached to spring clips 9 secured bv means of screws 10 and nuts 11 to the shaft 14 of the grippers, or to a similar shaft arranged in the gap 15. The strips 8 are adjustable longitudinally of the cylinder, and are preferably set so as to be approximately in circumferential alignment with the strips 7.
Patent GB-1146118-A (GB)
Title: Photographic material for the silver-dye bleach process
Inventor: NICKEL HORST
IPC: C09B45/08
Filed: 1967-04-10
Abstract: 1,146,118. Photographic silver-dye-bleach materials. AGFA-GEVAERT A.G. April 10, 1967 [April 15, 1966], No.16276/67. Heading G2C. A photographic light-sensitive material for the silver-dye-bleach process contains at least one silver halide emulsion layer containing an azo dye of the formula: - wherein R is a benzene ring having the azo group in ortho position to the -O-Cugroup and which may be further substituted, R 1  is a napththalene nucleus having the -O-Cugroup in 1-position, the azo group in 2-position and one or two sulphonic acid groups in the 4- and/or 8-positions, R 2  is hydrogen, halogen, alkyl, alkoxy or hydroxyalkyl, X is an n-functional acyl group derived from carbonic acid or a carboxylic group, m is 0, 1 or 2 and n is an integer from 1 to 4 inclusive. On exposure and silver-dye-bleach processing, which may include a black-and-white reversal step, the layer gives magenta images, which may be treated with aqueous copper salt solutions, e.g. copper sulphate or copper salicylate, to replace copper atoms lost during processing.
Patent GB-590270-A (GB)
Title: Improvements relating to propellant explosives
IPC: C06B31/04
Filed: 1942-11-18
Abstract: 590,270. Explosive compositions; cartridges. BURNEY, SIR C. D., and BROADWAY TRUST CO., Ltd. Nov. 18, 1942, No. 16290. [Classes 9 (i) and 9 (ii)] A propellent explosive charge for use in recoilless guns as described in Specification 586,749, comprises cordite in association with black powder or similar quick ignition substance, the rate of burning of which is stated to be substantially independent of pressure, the quantity of said substance in relation to the cordite being such as to maintain a constant pressure when the cordite is fired in a chamber open to the atmosphere until the cordite is consumed. The black powder or similar substance may be intermixed with the cordite during its 'manufacture and subsequently formed into strands and free black powder may then be associated with these strands as required. In order to increase the momentum of the propellent, heavy inert substances such as heavy metallic oxides and clays such as plaster of Paris, keiselguhr, china clay and the like may be added for the purpose of imparting weight but not velocity. The propellant may be contained in a sealed container which bursts at a predetermined pressure.
Patent GB-881092-A (GB)
Title: Improvements in collars for personal wear
Inventor: EATON FRANK
IPC: A41B5/00
Filed: 1959-05-13
Abstract: 881,092. Collars for personal wear. HOGG & MITCHELL Ltd. May 11, 1960 [May 13, 1959], No. 16355/59. Class 141. In a collar comprising face and back plies B, C and an interlining A, curved foldlinedetermining tapes a including thermoplastic or thermosetting material are applied to both sides of the interlining. The tapes may consist wholly of thermoplastic or thermosetting material or may be coated on one or both sides with such materials; they are first attached to the interlining by zig-zag stitchings or by partial fusion, the interlining is then assembled with the plies B, C, and the completed assembly is subjected to heat and pressure to bond the tapes to the plies in contact with the thermoplastic or thermosetting material. The tapes are cut on the bias or crimped to avoid pucker.
Patent GB-304983-A (GB)
Title: Improvements in or relating to seed separators or sorters
IPC: B07B13/02
Filed: 1928-06-05
Abstract: 304,983. Carrick, C. A. June 5, 1928. Separating by rotary pitted cylinders. - In seed-separating apparatus of the kind comprising a rotary cylinder a formed internally with cells which pick up the small seeds and deliver them to a trough e from which they are discharged by a worm e<1>, the discharge end of the cylinder is formed as a separating surface a<1> of reduced diameter so as to provide a reduced peripheral speed when dealing with the smaller quantity of materials remaining. The reduced part a<1> may be conical as shown, cylindrical, or stepped with plain or pitted connecting surfaces,
Patent GB-1023706-A (GB)
Title: Trimellitic anhydride curing agents for epoxy resin compositions
IPC: C07D307/89
Filed: 1963-04-25
Abstract: Epoxy resins are cured with compounds of formula <FORM:1023706/C3/1> where X is an -NH- radical or oxygen atom and Y is an aromatic or aliphatic radical.ALSO:The invention comprises compounds of formula <FORM:1023706/C2/1> where X is an -NH- radical or oxygen atom, and Y is an aromatic, or aliphatic hydrocarbon radical, which can be prepared by reacting equimolar amounts of trimellitic acid or anhydride with an appropriate ester or amide. The compounds may be used as curing agents for epoxy resins (see Division C3). Nonylphenyl acetate, a starting material, is prepared by the acetylation of nonylphenol.
Patent GB-858276-A (GB)
Title: Improvements in or relating to electric pulse counters
Inventor: HARRIS LIONEL ROY FRANK
IPC: H03K21/00
Filed: 1956-01-04
Abstract: 858,276. Electronic counting apparatus. POSTMASTER-GENERAL. Jan. 4, 1957 [Jan. 4, 1956], No. 354/56. Divided out of 858,275. Class 106 (1). In a binary counter the storage elements are delay lines, one for each bit, the delay lines being able to store pulses in several time positions, so that pulses may be fed to and stored in the counter on a time division multiplex basis, i.e. the counter counts simultaneously the pulses of trains of pulses which are interleaved in time. The Figure illustrates such a counter comprising circulating storage systems P1, P2 ... P16 whose delay lines have a delay equal to the pulse interval of any train. Timing pulses for all pulse trains are provided via gate SG10, and resetting pulses in any pulse position are applied to lead 4. The first pulse in any position is inserted in P1. The second pulse in that position is stored in P2 since CG1 is open and suppresses the pulse in P1. The next pulse is inserted in P1. The next is inserted in P4 and deletes the pulse in P2 and P1 and so on, the count being registered in binary form. If the count is allowed to reach 31, the output of CG10 prevents the application of further pulses of that train by gate SG10. The counter is arranged to produce outputs (in the appropriate pulse position) on L 3 , L 4 , L 5  for counts of 15 or 16, 10 or 11, 7 or 8.
Patent GB-553694-A (GB)
Title: Improvements in precision grinding machines
IPC: B23Q11/00
Filed: 1942-11-19
Abstract: 553,694. Grinding-machines. CHURCHILL MACHINE TOOL CO., Ltd., and ASBRIDGE, H. H. Nov. 19, 1942, No. 16395. [Class 60] In a machine in which the grinding-wheel and driving-motor are mounted on separate, interconnected cross slides, the motor and its slide act as a counterbalance to the grinding wheel head and prevent its creeping forward ; for this purpose the motor slide e is mounted on antifriction bearings g on backwardly inclined guides h. Specification 513,405 is referred to.
Patent GB-1356268-A (GB)
Title: Preparation of fine powders
IPC: C01G1/06
Filed: 1971-05-21
Abstract: 1356268 Metal halides; metal sulphides KITO KK 21 May 1971 [21 May 1970 26 Oct 1970 (2)] 16421/71 Heading C1A [Also in Division C5] An anhydrous fine powder of a metal halide or a metal sulphide is prepared by heating in an enclosed space a block in which the halide is occluded, to a temperature higher than the evaporation point of the halide and passing into the enclosed space containing the evaporated halide, a cool, anhydrous gas to quench the halide and produce anhydrous fine powder. To produce an anhydrous metal halide the gas is inert towards the halide but to produce a metal sulphide the gas contains hydrogen sulphide. Halides and sulphides of chromium and aluminium are disclosed. The block may comprise Cr or Al and the gas either N 2  or Ar or a mixture of H 2 S and a gas inert towards the metal halide. Chromium chloride (0À5-1+) and chromium sulphide may be prepared by heating blocks 1 consisting of 20-60 wt. per cent chromium chloride, less than 0À5% iron, 5-30% aluminium oxide and/or silicon dioxide and the remainder of chromium in an electric furnace 2 with either Ar or a mixture of Ar or N 2  and H 2 S entering through 4. Various temperature distributions for the furnace are given in the Specification.
Patent GB-757907-A (GB)
Title: Process for the manufacture of acetals of crotonaldehyde
Filed: 1953-06-15
Abstract: In a process for the manufacture of acetals of crotonaldehyde, an aliphatic butadienyl ether is reacted with an aliphatic alcohol in the presence of an acid catalyst.  In an example crotonaldehyde diethyl acetal and a butadienyl ether dimer are isolated from the product obtained when butadienyl ethyl ether and ethyl alcohol are reacted under reflux in the presence of hydrochloric acid. Additional acetals obtained similarly by reacting butadienyl methyl ether with the appropriate alcohol are crotonaldehyde dimethyl-, methyl ethyl-, methyl isopropyl-, methyl butyl-, and methyl allyl-acetals and similarly using butadienyl ethyl ether crotonaldehyde diethyl-, ethyl methyl-, ethyl isopropyl-, ethyl butyl- and ethyl allyl-acetals are obtained. The butadienyl ethers may be prepared by splitting trialkoxy-butanes, e.g. by the process of Specification 724,012.
Patent GB-861227-A (GB)
Title: Improvements relating to combine harvesters
IPC: A01D41/12
Filed: 1957-05-24
Abstract: 861,227. Combine harvesters ; sack holders. MASSEY-FERGUSON Inc. May 24, 1957 [June 4, 1956], No. 16472/57. Classes 6(3) and 58. [Also in Group XXIV] In a combine harvester comprising a grain tank from which grain is discharged by a rotating auger via a spout to the bagging station, the discharge outlet of the spout is provided with a door and means are provided whereby the auger is only rotated when the door of the outlet is open. The auger 25, mounted between the side walls of the grain tank 46, is driven from the crankshaft of a motor 12 mounted on the combine, the drive to the auger including an electro-magnetic clutch 36 (see Group XXIV) so that rotation of the auger is interrupted when the clutch is inactive. The auger discharges grain from the grain tank via a spout 58 having at its lower end an outlet provided with a sliding door 89. One wall of the spout carries a spring-biased push-button switch 100 which controls the circuit of the clutch 36, the operation of the switch being such that when the plunger 108 is depressed by the door in its closed position the circuit is open and the clutch inactive, but when the door is open the plunger withdraws into a depression 110 formed in the door, the circuit is closed, the auger rotates and grain is discharged through the outlet into bags held beneath the spout on a bag-holder 94. The bag-holder comprises two parallel rods 131 pivotally mounted on a frame 130 and each provided with a pair of spikes 138. A handle 135 is connected to the two rods by suitable linkage so that by turning the handle one way the rods 131 are rotated in their bearings 133 to bring the spikes into a position in which they extend horizontally outwards. An operator standing on the platform P can then slip the mouth of the sack upwards over the frame 130, engaging the sack on the spikes 138, and on turning the handle 135 in the opposite direction, the spikes will be returned to their vertical positions, holding the sack wide open for filling. U.S.A. Specification 2,695,687 is referred to.