baber/WOPTO huggingface dataset:
Patent GB-566076-A (GB)
Title: Improvements in or relating to optical projection screens
IPC: G03B21/60
Filed: 1943-06-03
Abstract: 566,076. Projection screens ; light polarizing apparatus. KODAK, Ltd. June 3, 1943, No. 8922. Convention date, June 3, 1942. [Class 97 (i)] A front projection screen which can be used in daylight comprises a light-polarizing means which has non-polarizing spots and is arranged in front of a reflecting surface, the polarizing means and reflecting surface being such that only light from the projector after passing through the polarizer is reflected back through the non-polarizing spots, whilst incident light arriving from other directions is reflected back to the polarizing portions and so cut off. Fig. 4 shows a section of a central portion of one form of the screen comprising a transparent sheet 11 formed with lenticulations 13 and a reflecting aluminium or silver backing 21. A plane polarizing layer 17 and a quarter-wave plate layer 16, in passing through which the light is circularly polarized, are provided on the fronts of the sheet 11, the layer 17 being without polarizing properties at the spots 22 at which light rays B from the projector are brought to a focus by the concave mirrors formed by the lenticulations. Rays C from any other source are reflected by the concave mirrors back to the polarizing parts of the layer 17 so as to be cut off by it owing to their state of polarization. Fig. 6 shows a section of the screen near its top edge, the spot 22 being displaced from the axis of the concave mirror in accordance with the position, of the focus of the rays E from the projector. The spots 22 may be produced by forming the layer 17 of material, such that its polarizing character is destroyed by heat, the screen being mounted in the same position relative to a lamp as that which it is to occupy relative to the projector ; the heat accompanying the focused light destroys the polarizing properties. Alternatively, a photo-sensitive layer may be deposited upon a layer 17 of birefringent material capable of being converted to a polarizer by a dichroic dye, the material being exposed to a lamp, placed as above stated, to form a resist at the positions of the spots 22. The resist is washed off elsewhere, and the layer 17 is appropriately dyed to render it polarizing. Specifications 547,554, 556,578 and 562,523 are referred to.
Patent GB-217357-A (GB)
Title: Improvements in bending or shaping metal sheets or strips
IPC: B21C37/30
Filed: 1923-03-29
Abstract: 217,357. Dyson, W. H., Crowfoot, C., and Piper, W. March 29, 1923. Angular bending; working at specified temperatures.-The final cross-sectional form of a tube, wing or other constructional member for aircraft &c., made from stainless or other iron or steel sheet or strip of high elastic properties, is effected by bending in dies or rolls in a furnace heated to a tempering temperature so as to avoid subsequent springing open of the edges of the article. A flat or partly shaped hardened and tempered strip may be used, the temperature of the furnace being such as not to modify the original mechanical properties of the strip and being approximately the same as or lower than the temperature at which the strip was originally tempered. In some cases a temperature of 400‹ C. is suitable. In a modification the strip may be initially bent cold in a soft condition, further shaped in a furnace heated to hardening temperature, then hardened, and subsequently further shaped in a furnace heated to tempering temperature. The furnace may contain an inert atmosphere.
Patent GB-947855-A (GB)
Title: A new or improved mechanism for operating points and switches in railway and like tracks
IPC: E01B7/02
Filed: 1959-03-16
Abstract: 947,855. Railway points. D. HERON. March 14, 1960 [March 16, 1959], No. 9016/59. Heading E1G. Relates to a railway point or switch control mechanism in which a member, mechanically coupled to the points, is moved from one position to the other by operation of a hand lever in the same direction from a rest position. In the arrangement shown in Fig. 2 a forked lever F is moved between guide pins P by a vertical pivoted hand lever J engaged in a slot H. The position of the points, connected by rods to an arm C driven by a segment A, is changed by moving the forked lever F to engage one of its prongs G with a depression E to rotate the segment A. During this movement the other prong G rides up a face cam so as not to engage a diametrically opposed depression E in the segment A. The points are held in the changed position, when the forked lever is returned to its normal position, by an overcentre toggle arrangement formed by a spring D and the arm C.
Patent GB-1267701-A (GB)
Title: Apparatus and method for detecting and reporting ends down on textile machines
IPC: D01H13/32
Filed: 1969-02-19
Abstract: 1,267,701. Signally and counting broken ends. PARKS - CRAMER CO. 19 Feb., 1969 [19 Feb., 1968; 29 Jan., 1969], No. 9025/69. Heading D1F. [Also in Division H1] The ends down condition of spinning machines is detected by a travelling unit comprising a detector for the ends down condition, and a means responsive to the data sensed by the detector for determining the ends down condition of a traversed machine and indicating and reporting the existance of such an unacceptable number of ends down. As described, a cleaning unit has a mechanical, photoelectric or sonic detector of the ends down condition of the spindles in one of a plurality of frames. The number of broken ends in any one of the frames is counted electronically (Fig. 11) using light or sound waves or mechanically by physical contact (Fig. 13). The number of ends down is counted electronically or by a solenoid operated ratchet end pawl device (Fig. 15) and after a predetermined number has been counted, a stationary data collector is signalled so as to light a lamp at the end of the machine frame, e.g. in the aisles between machine frames. The lamps can be manually extinguished. The counting device for the broken ends can be automatically reset to zero at the end of the. machine frame and may have an overriding cut-out which. operates when the sensing head meets an obstruction or when it reaches the end of the frame or when it passes between spindles. Reference has been directed by the Comptroller to Specification 1,205,823.
Patent GB-1492942-A (GB)
Title: Apparatus for use in the production of heat exchanger matrices of the packed construction type
IPC: B21D53/08
Filed: 1975-02-19
Abstract: 1492942 Producing heat exchanger matrices BRITISH LEYLAND UK Ltd 19 Feb 1975 [28 Feb 1974] 9026/74 Headings B3A and B3E Apparatus for the production of heat exchanger matrices of the packed construction type comprises two parallel, spaced-apart longitudinal guide members 3 between which a flexible corrugated strip is to be supported, and a number of fluid outlets or nozzles 5 for directfluid jets into the space between the members so as to change the pitch of at least some of the corrugations. Flat-section tubes 2 and corrugated fin elements 1 are alternately stacked to form an assembly and the fluid is directed at the elements 1 to form zones of concentrated corrugations. The outlets are preferably provided in the sides of the parallel guide members 3. A reciprocating bar 4 progressively displaces the assembly from between the members and the assembly is subsequently clamped together.
Patent GB-447320-A (GB)
Title: Improvements in and relating to golf clubs
IPC: A63B53/02
Filed: 1934-11-09
Abstract: 447,320. Golf clubs. BYRNE, E. L. W., 329, High Holborn, London.-(Kroydon Co., Inc. ; Burnett Avenue, Maplewood, New Jersey, U.S.A.) Nov. 9, 1934, No. 9043/36. Divided out of 447,270. [Class 132 (ii)] The tubular metal shaft of a golf club is tapered to fit a tapered socket in the head, the taper being between ¢‹ and 1¢‹ of angle. The shaft may have a reversely tapered portion next to the taper engaging the socket in the head and end in a third taper in the same sense as the first taper, the reverse tapers meeting at a point some distance up the shaft. For a wooden headed club the socket head taper is followed by a shoulder 22 and the reverse taper 23 is followed by a taper 25 increasing to the substantially cylindrical handle portion 26. The socket taper in the head is plugged at the bottom end and the shaft is secured by a screw 21 passing through the head and the shaft. In an alternative form of shaft the taper 28 engaging the head is followed by a shoulder 29, a cylindrical portion 30, a reverse taper 32, a cylindrical shaft 34 and a conical part 36 widening to the cylindrical handle portion 38.
Patent GB-1491181-A (GB)
Title: Gas lamp
IPC: F23Q2/30
Filed: 1976-03-08
Abstract: 1491181 Gas lamps; piezo-electric igniters ELPINVEST SA 8 March 1976 [6 March 1975] 09127/76 Headings F4T and F4F A gas lamp comprises a mantle 38, a main gas valve 28 movable between the open and closed positions by means 94, an auxiliary burner 82 for igniting the mantle 38 and having a nozzle 86 directed towards the mantle, a valve 84 for controlling burner 82, a piezo-electric spark generator 104 for igniting burner 82 and means 122 linked to valve 28 and operated mechanically to actuate spark generator 104 when main valve 28 is fully open, valve 84 being urged to the closing position by resilient biasing means 154, Fig. 11, valve 84 communicating with a conduit 67, Fig. 2, extending between valve 28 and mantle 38 and valve 84 having a displaceable control element linked to the main control means for valve 28 so that operation of means to open valve 28 causes valve 84 also to open and when the control means is released after fully opening valve 28, valve 84 is returned to the closed position by biasing means 154, Fig. 11. Valve assembly 14 includes main valve 28, connected to a pressure regulator diaphragm 52 by a pin 58 and a needle 56, and a screw and nut assembly 64, 62, so that as the assembly is actuated, valve 28 is opened or closed. A sleeve 66 of valve assembly 14 carries an operating lever 94, whose angular movement is limited by two radial walls (100), (102), Fig. 7 (not shown), formed on support body 32. Auxiliary valve 84 is connected to main valve 28 by a passage 76. In operation, lever 94 is rotated, an element 124 of a stop 122, Fig. 4, engages an abutment 120 on striker body 112, Fig. 3, thus forcing the striker against the force of a spring 118, away from the percussion boss (119), Fig. 10 (not shown), of piezo-electric generator 104. Strip 122, Fig. 11, engages a ramp 126, Fig. 3, and is disengaged from abutment 120, so that spring 118 forces striker 116 against boss 119 and sparks are generated. An arm 128 engages a collar 134 Fig. 4, on auxiliary burner 82 and pushes the latter downwardly so as to open valve 84, and the auxiliary burner is lit. Further rotation of lever 94 opens main valve 28 and gas is supplied through conduit 67 to mantle 38, which is then lit from burner 82.
Patent GB-597878-A (GB)
Title: Improvements in or relating to recording devices
Filed: 1944-05-12
Abstract: 597,878. Recording receipts. STEVENS, A. H. (Collection Recorder Co.). May 12, 1944, No. 9128. [Class 106 (i)] A device for recording instalment payments &c. comprises a casing A containing recording mechanism B and receipting mechanism C for marking an inserted card F. Actuating means E is freed by releasing mechanism D when the card is correctly positioned. Recording mechanism. Upon inserting the card F in a slot 24, Fig. 1, a shoulder 14 on the card engages a stop 169, Fig. 3, on a slidable carriage 116, pushing it along until indicia 10 on the card overlie a platen 72, Fig. 1, of the recording mechanism. A shaft 184 on the carriage is rotated by gears 188, 190 engaging stationary racks 192a, 192b, and a smaller gear 200 on the shaft moves a slidable rack 202 and sets up a number on numeral wheels 56, 58 corresponding with that adjacent the stop shoulder 14 on the card. A spiral return spring 194 is wound up during this movement of the carriage. Paper recording tape 88 passes from a roll 90, back over the platen 72, to a roll 92 which is stepped forward at each actuation of the device by pawl-and-ratchet mechanism. A stationary ink ribbon is held in a frame over the tape and serves to transfer to the latter, indicia from the card and the numeral wheels. Receipting mechanism. Date wheels 128, 130, Fig. 7, are mounted in the carriage 116 and also indicia 126 representing e.g. the collector's name. Between these and a platen 160, an ink ribbon 152 held in a frame 154 serves to transfer the date &c. on to the inserted card at the line adjacent the stop shoulder 14. Upon actuation of the device, a punch 172 cuts a portion from the card to bring the shoulder down to the next line. Releasing mechanism. To release the actuating means, a plunger 204, Fig. 1, is depressed, but this cannot be done until the receipt card is correctly positioned with its aperture 16 in alignment with the plunger. Passing through the card the plunger engages a second plunger 216, Fig. 3, attached to the bottom of which is a plate 220 with an aperture 222. This movement removes the aperture from engagement with a lug 224 on an oval actuating rod 78. Actuating mechanism. This is operated (when released) by a lever 232 secured to the oval rod 78, rotation of which brings its major axis into a vertical position. A pillar 76 depending from the platen 72 is forced upwards by this action and an impression is made upon the recording tape; a pin 114 on the rod 78 engages in a cam slot of a slide 110 to operate the ratchet tape-feeding device after the impression has been made. The date wheels &c. of the receipting mechanism, Fig. 7, slidable as a unit within a housing 117, are forced upwards by the oval rod 78 to make a recording on the receipt card. A leaf spring 142, bearing on the walls of the carriage 116, returns the unit. The punch 172 is operated through a lever 174 fulcrumed at a point 182. The casing may be locked by a tumbler lock, and a window 15 may be provided for observing the record tape.
Patent GB-331234-A (GB)
Title: Improvements in or relating to variable impedance devices
IPC: H01F38/02
Filed: 1929-03-21
Abstract: 331,234. General Electric Co., Ltd., and Angold, A. E. March 21, 1929. Inductances.-A variable impedance comprises an iron core wound with one or more pairs of alternating-current windings, each pair of windings being connected in parallel and arranged on the core so that fluxes due to these windings flow in opposite directions through a shunt member which is wound with a continuous current control winding. As shown, the impedance comprises a three-limb laminated core 44 - - 46, the centre limb 45 having a larger cross-section than the others, solid shunts 47, 48 being wound with a control winding 51 producing consequent poles at the centre of the limb 45. Alternating-current windings 58 - - 63 are arranged on opposite sides of the shunts 47, 48 and are connected in parallel between the terminals 54 - - 56 and the neutral 57.
Patent GB-704722-A (GB)
Title: Improvements in or relating to combustion apparatus
IPC: F23R3/08
Filed: 1952-04-10
Abstract: 704,722. Generating combustion products under pressure. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. April 10, 1952 [May 23, 1951]. No. 9179/52. Class 51 (1) In a combustion apparatus, a wall of the flame tube comprises an annular wall section 31a formed with longitudinal corrugations 35 disposed parallel to the axis thereof, and a second annular wall section 31b encompassing and engaging the first section and formed with at least one circumferential corrugation or channel 36, the inner surfaces of the second section 31b being spot-welded or otherwise secured to the first section. The invention is shown applied in the case of an annular flame tube in an annular combustion apparatus of a gas turbine engine, the flame tube being formed in a number of parts of increasing diameter towards the downstream end. The second annular section 31b is formed in at least two parts comprising flanges 37 and channel sections 36, apertures 38 being formed in the webs of the channels for admission of cooling air. The corrugated upstream end of a flame tube part overlaps the downstream flange 30a of an upstream part so as to provide openings for the admission of air to within the flame tube.
Patent GB-848049-A (GB)
Title: Speed-warning arrangements for use in speedometers and the like
IPC: G01P1/11
Filed: 1959-03-17
Abstract: 848,049. Particular speed indicators; indicating-apparatus. KIENZLE APPARATE G.m.b.H. March 17, 1959 [April 18, 1958], No. 9179/59. Classes 106 (3) and 106 (4). The translucent pointer 7 of a rotation speed indicator or speedometer has a bevelled portion 9 which lights up at a predetermined speed when the base of the pointer passes over an illuminated slot 6. The light box 3 may be shifted by screws 4 in slots 5 to alter the critical speed, and may be provided with several slots.
Patent GB-550805-A (GB)
Title: Improvements in dyes and dyeing
IPC: C09B31/06
Filed: 1941-07-22
Abstract: 550,805. Dyes ; dyeing textiles &c. WRIGHT, J. July 22, 1941, No. 9251. [Classes 2 (ii), 2 (iii) and 15 (ii)] Disazo dyes of the general formula R 1 -N =N-R  2 -N =N-R 3 -OX, wherein each of R 1  R and R 3  represents a residue comprising a single nucleus of the benzene series, of which at least one is substituted by an acidylamino group, and X represents H or alkyl, are obtained by (a) coupling a diazotized aminoazo compound of the general formula R 1 -N=N-R 2 -NH 2  with a phenol of the general formula R 3 -OH and, if necessary, alkylating the product, or with a phenol ether of the general formula R 3 -OX, wherein X represents alkyl, (b) N-acidylating the corresponding dyestuffs, similarly or otherwise obtained, containing one or more free amino groups in place of the acidylamino group or groups. The products are suitable for use in the production of dischargeable dyeings, fast to light and to aqueous treatments, on textile and other materials made of or containing a cellulose ester or ether and for incorporation in lacquers and spinning solutions of cellulose esters or ethers ; they are also similarly applicable for colouring materials formed from synthetic linear polymers such as-those obtainable from the condensation of adipic acid with hexamethylenediamine. Specified acidyl groups are acetyl, propionyl, benzoyl and p-chlorobenzoyl. Specified first components, R 1 -NH 2 , are aniline, chloroanilines, toluidines, xylidines, anisidines, cresidine, m- and pacetylaminoanilines, p-benzoylaminoaniline and 4-acetylamino-2-methoxyaniline. Specified second components, R 2 - NH 2 , are aniline, 2 : 5- dimethoxyaniline, 2 : 5-di-(#-hydroxyethoxy)- aniline, o- and m-cliloroanilines, o- and mtoluidines, o- and m-anisidines, cresidine, macetylaminoaniline, m-propionylaminoaniline and p-xylidine. Specified third components, R 3 -OH, are phenols, cresols, xylenols, chlorophenols and acetylaminophenols. Examples relate to the production of the following dyestuffs, viz., p-acetylaminoaniline# m-toluidine # phenol, p-acetylaminoaniline # -p-xylidine # p - cresol, p - propionylaminoaniline # aniline -> phenol, 4 - acetylamino - 2 - methoxyaniline # m toluidine # p - cresol, p - benzoylaminoaniline # m - toluidine # phenol and p - - aminophenol # p - - xylidine -> m - toluidine, the product in this case being N -acetylated with acetic anhydride. An example is also given of the dyeing of a cellulose acetate fabric. Specification 398,842 is referred to.
Patent GB-1176822-A (GB)
Title: Improvements in or relating to Template Following Apparatus.
Inventor: FARMER FREDERICK CHARLES
IPC: B23Q35/18
Filed: 1967-02-27
Abstract: 1,176,822. Engraving. INTERWOOD Ltd. 26 Feb., 1968 [27 Feb., 1967], No. 9279/67. Heading B6J. [Also in Division B3] A copying machine tool, e.g. for milling, scribing or flame-cutting comprises a movable table adapted to carry both the workpiece and a template and to be moved by pressure cylinders arranged at right-angles, a sensing element mounted to be displaced by the template and operating when displaced to control the supply of fluid to the cylinders so that the force applied to the table has components parallel and perpendicular to the direction of displacement of the sensing element, the table .thereby moving so that the sensing element automatically remains in contact with and traces the template and the workpiece is moved correspondingly relative to the tool. Pneumatic cylinders 11, 12 are arranged to displace the compound table 10 in two co-ordinate directions in a plane the control valves 14 ... 17 for these cylinders being arranged at an angle of 45 degrees to the direction of the respective cylinders so that when the valves are operated by displacement of the sensing element 13 the table is moved so as to hold the template against the element 13 and also to cause it to follow the contour of the template. Hydraulic cylinders 18, 22 with associated check and non-return valves 19, 20 and 23, 24 limit the speed of movement of the table in order to prevent the sensing element 13 losing contact with the template at abruptly angular portions thereof. The sensing element itself is mounted for pivotal movement about any axis in the plane of a self-aligning bearing 36, the extent of its movement being limited by the engagement of a spherical bearing 37 with a housing part 38. A pneumatic valve 50 is arranged on the housing 35 of the sensing element so as to engage a stop pad 53 which stops the movement of the table, restarting being controlled by a push-button controlled valve. A stop valve 21 in the hydraulic circuit of cylinder 18 is controlled so that when the tool is not in lowered position the valve is closed and therefore copying movement of the table 10 is prevented.
Patent GB-292969-A (GB)
IPC: D01D10/04
Filed: 1928-03-28
Abstract: 292,969. Kohorn & Co., O., and Perl, A. June 28, 1927, [Convention date]. Addition to 274,885. Hanks, treating.-An electric drive for transferring the hank rods through the apparatus described in the parent Specification comprises an electromagnetic coupling 48, the continuouslyrotating half 48<a> of which is driven from a motor. Two reversible switches 46, 47 are provided, driven respectively from the eccentric pin 44 of the beam 10 and from the continuously-rotating half 48<a>. The duration of the transferring motion is determined by the speed of rotation of the coupling 48 and by gearing 37, 38. The duration of the stationary period for sprinkling .&c. is determined by the speed of rotation of the coupling 48 and the gear ratio between the shaft 50 and the switch 46, which latter can be varied in known manner.
Patent GB-252648-A (GB)
Title: Improvements in playing darts
IPC: F42B6/00
Filed: 1926-04-09
Abstract: 252,648. Woolf, S. April 9, 1926. Darts.-Relates to darts of the kind comprising a cylindrical body 3 having at the front end a ferrule 1 and pointed pin 2 and at the rear end a fly 4, and consists in the provision at the rear end of a light metal cap 5 formed with slots 7 to receive the fly. In a modification, the body 3 of the dart is formed by an elongation of the cap 5 which is attached directly to the ferrule 1. The object of the invention is to prevent a dart which has reached the target from being damaged by the pin of a following dart.