baber/WOPTO huggingface dataset:
Patent GB-1223600-A (GB)
Title: Apparatus for treating thermoplastic films
IPC: B29C67/00
Filed: 1968-04-24
Abstract: 1,223,600. Thermoplastic films. E. G. ROWE PTY. Ltd. 24 April, 1968 [27 April, 1967], No. 19438/68. Heading B5B. [Also in Division B8] Apparatus for reducing the gauge of thermoplastic film, and treating the same to provide a wrapping for an article, consists of a support for a roll of thermoplastic film, a heating member which the film passes as it unwinds, means to tension and stretch the film longitudinally as it unwinds, and a bowed tensioning member which laterally tensions and stretches the film as it moves away from the said heating member. In the embodiment shown, the roll of thermoplastic film 4, on a mandrel 5, is mounted on a pair of rollers 10, unwinds under the guide roller 11, and passes between the hot-plate 6, the temperature of which is 200‹ F. for uni-axially oriented film and 160‹ F. for bi-axially oriented film, and a heat shield 12. A cover 14 is placed over the hot plate so that the film is not attracted to the hot plate. The film is tensioned longitudinally by the operator, and then passes under the bowed helical spring 7, which imparts lateral tension to the film. The film 4 passes the chrome-plated guide-bar 8 the cross-section of which is a segment of a circle, and it is cut by exerting downward pressure against shield bar 13, to bring the film into contact with heated wire 9 which cuts the film. After cutting, the film does not flip back on to the hot plate as the guide bar 8 has a surface attraction for the film. For details of the wrapping methods see Division B8 abridgment.
Patent GB-498885-A (GB)
Title: Vehicle wheel suspension
IPC: B60G13/02
Filed: 1937-07-13
Abstract: 498,885. Vehicle spring-suspensions. EVERNDEN, H. I. F. July 13, 1937, No. 19453. [Class 108 (ii)] In an independent wheel suspension for a vehicle comprising a link member B<2> connected at one end to the wheel assembly and rigid at the other end with a shaft C, the bearings B<1> of the shaft C are rigid with the vehicle frame and the shaft C is coupled with a frictional or hydraulic shock damper the stationary part of which is anchored resiliently to the vehicle frame. In the example shown the shock damper is frictional and comprises a pair of plates C<3> and C4 splined to the end of shaft C and an intermediate plate D anchored by a strap D<3> to the frame. Friction washers E are interposed between the three plates and the whole is placed under compression by a dished washer C<5> and nut C<6>. The arrangement with a hydraulic shock damper is similar : the casing of the damper is suspended on the end of the shaft C and anchored by a V-shaped torque member G<1> to the frame. The connection of the strap D<3> or torque member G<1> with the frame is resilient and comprises a rubber bush G<6> interposed between the strap D<3> or member G<1> and a bolt G3 carried in a bracket G<4> on the frame. Specification 485,339 is referred to.
Patent GB-152814-A (GB)
Title: Improvements in or relating to apparatus for producing curved stereotype printing plates
IPC: B41D3/00
Filed: 1919-08-08
Abstract: 152,814. Linotype & Machinery, Ltd., (Wood, H. A. W.). Aug. 8, 1919. Printing - surfaces; stereotype.-In stereotype casting-apparatus, particularly for tubular plates, in which the plate is ejected axially from the casting box by the rotation of the core, the casting box is pivoted so that it can be turned from a vertical casting position to an horizontal plate-ejecting position. The plate passes from the casting-box on to a rotatable drum on which it is held while the tail is severed and the plate cooled. As shown, the casting-box 12 is mounted on trunnions 11 and is held in the vertical and horizontal positions by a spring latch 17 engaging notches 16 in the frame. The latch is provided with a hand grip 18 by which it can be grasped bv the operator simultaneausly with the grasping of the handle 19 by which the casting- box is turned. The core 15 is provided with a helical groove 210 which forms a helical rib on the plate by which the plate is ejected axially upon rotation of the core. The edges of the matrix are inserted in grooves in a bar 21, Fig. 5, secured to the box 12, and the bar 21 forms the longitudinal gap in the plate and prevents rotation of the plate during its ejection. The plate is guided by a rib 20 of less thickness than the bar 21 extending between the side of the box 12 and the bearing 14. During the ejection, the helical rib on the plate is shaved by knives 22 fixed to the core. When the casting-box is turned into the horizontal position, the forked extremity 37 of the axle of the core embraces a lug 36 on the end of a shaft 35, Figs. 1 and 4. The shaft 35 is adapted to be driven by gears 34 from a vertical shaft 29 on which is a loose worm-wheel 37 constantly driven by a worm 26 on the belt-driven driving-shaft 23. The worm wheel 27 carries a spring pin 30 normally held raised by the engagement of its head with a cam 32 operated by a pedal 33. When a plate is to be ejected, the pedal is depressed to allow the pin 30 to engage a hole 31 in a hub 28 fast on the shaft 29 so that the shaft 35 is rotated. At the end of a revolution, the pin 30 re-engages the cam 32 and is disconnected from the hub 28. The plate passes over a saddle 38 on to a drum 39 loose on the shaft 35 and provided with a handle 46 by which it may be rotated to carry the plate past a tail cutter 50 which is driven by a chain 48 from the shaft 23. Ribs 51 and 52 on the saddle 38 and drum 39 engage the gap in the plate to guide it, and the rib 52 also serves to cause the plate to rotate with the drum. While on the drum the plate is cooled by water passing from a pipe 43 through a valve 44 and pipe 45 to a chamber 41 and escaping on to the plate through perforations 42. The valve 44 is co-axial with the drive 39 so as to rotate with it and the passages in the valve are so arranged as to be closed when the drum is in normal plate receiving position.
Patent GB-751557-A (GB)
Title: Imidazolone derivatives and process for the manufacture thereof
Filed: 1954-07-05
Abstract: The invention comprises compounds of the formula <FORM:0751557/IV(a)/1> where R1 denotes the optional presence of a lower alkyl, lower alkoxy or nitro group or a halogen atom, R2 is a lower alkyl, cycloalkyl or phenyl group (which last may contain any of the substituents which R1 represents) and R3 denotes the optional presence of a lower alkyl or lower alkanoyl group, the prefix "lower" denoting groups containing one to six carbon atoms.  The products are anticonvulsants.  Such compounds are obtained by ring closure of a compound of the general formula <FORM:0751557/IV(a)/2> wherein R4 is a hydrogen atom or a lower alkyl group and R5 is a lower alkyl group, by treatment with an acidic agent so as to eliminate two molecules of the alcohol R5OH and, if desired, where R4 is a hydrogen atom, heating the compound so formed with an anhydride of a lower alkanoic acid. Radicals in the 1-position of the imidazolone (2) may, for example, be a -ethyl-, a -propyl- or a -cyclohexylbenzyl, benzhydryl, p-methyl- or methoxy- or p-nitro-benzhydryl, p,p1-dimethoxy-benzhydryl.  The 3-substituents may be methyl, ethyl, butyl, acetyl, propionyl or butyryl groups. Alcoholic hydrochloric acid is a suitable acidic agent for ring closure.  In Example (1) 1-benzhydryl-3-methyl-imidazolone-(2) is prepared by refluxing 1-benzhydryl-3 - methyl - 3 - (formylmethyl) - urea dimethyl acetal with alcoholic hydrochloric acid.  A series of further examples illustrates the preparation by analogous methods of other imidazolone-(2) derivatives of the above formula containing various groups in the 1- and 3-positions selected from those specified above. In Example (5) the product, 1-benzhydryl-2-imidazolone, is converted to its 3-acetyl and 3-propionyl derivatives, respectively, by treatment with the appropriate acid anhydride.  The starting materials are obtained by reacting an isocyanate of the formula <FORM:0751557/IV(a)/3> with an amino-acetaldehyde di-(lower alkyl)-acetal of the formula R4-NH-CH2CH(OR5)2 or in the case where R1 is absent, R2 is a phenyl group, and R4 and R5 are lower alkyl groups in the urea-derivative, by reacting 4,4-diphenyl-oxazolidine - dione - (2,5) with a (lower aklyl-amino) - acetaldehyde di (lower alkyl) - acetal.  Thus 1 - benzhydryl - 3 - methyl - 3 - (formylmethyl) - urea dimethyl acetal is prepared by reacting methylamino-acetaldehyde dimethyl acetal with benzhydryl isocyanate or with 4,4-diphenyl-oxazolidine-dione-(2,5).  Similarly are prepared the other starting materials of the second formula containing 1-substituents selected from those specified above and at R4 hydrogen, methyl and ethyl groups.  a -Ethyl-benzyl isocyanate is prepared by treating 2-phenyl-butyryl chloride (obtained from the corresponding acid and thionyl chloride) with activated sodium azide. a -Methyl-benzyl isocyanate is prepared by treating a -methyl-benzylamine with phosgene. Ethylaminoacetaldehyde dimethylacetal is prepared by heating chloracetaldehyde dimethyl acetal with ethylamine.
Patent GB-370276-A (GB)
Title: Improvements in mechanical despatch apparatus for use in shops and the like
IPC: B65G35/00
Filed: 1931-07-08
Abstract: 370,276. Mechanical dispatch apparatus. MASSEY, R., The Cliffs, Burton Road, Findern, near Derby. July 8, 1931, No. 19611. [Class 116.] The carrier 1, Fig. 2, of a mechanical dispatch apparatus is impelled along the track 2 by a spring &c. 3 which may be tensioned or compressed through an endless chain or band 17 operated by means of an angularly-movable arm or handle on a spindle 25. The spring 3 passes behind one of two grooved members 9 mounted on the frame 5 of the carrier, and is secured to a carriage 10 having a toothed plate 20 engaging the links of the chain 17. When the spindle 25 is rotated, a toothed quadrant 24 thereon moves the chain through a pinion 23 and a sprocket 18, a spring 45 being simultaneously wound ; and during the forward motion of the carriage the latter engages adjustable nuts 44 on a bar 40 and causes rotation of a bar 36 through links 38, 39. A cam member 35, Fig. 5, on the bar 36 is thus rotated between arms 27 carrying spring-pressed, pivoted members 29 which normally engage one of two rollers 6 on the carrier. The latter is thus released, and the operating arm and carriage are allowed to resume normal position under the influence of the spring 45, while a spring 30 on the pivotal axis 28 closes the arms 27 and actuates the cam 35 to retract the bar 40, a buffer-spring 49 being provided. The spring 3 may be replaced by an elastic band, by a pair of springs secured to a bar engaging an abutment on the carrier, or by compression springs actuated by rods carried by a U-shaped member and slidably attached to the carriage. A ratchet-and-pawl device 50, 52 is provided for the purpose of tensioning the track, whilst fixed nuts 46 limit the setting of the nuts 44 and thus prevent undue straining of the spring 3.
Patent GB-1183343-A (GB)
Title: Improvements in Transmission Line Hybrids
Inventor: SHONE ARTHUR BRIAN
IPC: H01P1/213
Filed: 1967-04-28
Abstract: 1,183,343. Ring hybrid networks. BRITISH BROADCASTING CORP. 9 Aug., 1967 [28 April, 1967], No. 19678/67. Heading H1W. The usable bandwidth of a ring hybrid arrangement is improved by connecting between the terminals of the ring and a set of external terminals further lines having characteristic impedances which differ from the terminal impedances presented at the external terminals. The invention is particularly applicable to coaxial line hybrids comprising three quarter-wave sections and one threequarter-wave section. A complete theoretical discussion of the invention is given in the specification which begins by discussing the values of admittances or susceptances which must be shunted across the ends of a line which differs in length by a small amount 8 from an integral number of quarter wavelengths, if the characteristic admittance of a n#/4 line is to be preserved. It is then shown that at a frequency (1+#) times the frequency at which the lines of the hybrid have their correct length, the admittance conditions of the hybrid may be preserved by using the modification of Fig. 8 where the circuit is assumed to have equal normalized terminal admittances (the general case is also discussed). The balance of the bridge is investigated (Figs. 10, 11, not shown) and the out-of-balance impedances evaluated. It is then shown that if further susceptances of j.##/2#2 are added at terminals B and C and further susceptances -j.##/2#2 are added at terminals A and D, the bridge will become balanced. A short calculation shows that this may be achieved by addition of half-wavelengths sections of normalized characteristic admittances as shown in Fig. 12. If the two further lines connected to terminals B and C are omitted, the two further lines connected to A and D will have normalized admittances of 1/#2 and if the two further lines connected to A and D are omitted, the two further line connected to B and C will have a normalized admittance of #2.
Patent GB-1388546-A (GB)
Title: Lenses
IPC: G02B13/00
Filed: 1971-06-09
Abstract: 1388546 Catadioptric lens RANK ORGANISATION Ltd 26 May 1972 [9 June 1971] 19792/71 Heading G2J An optical system comprises a catadioptric objective and an independent second optical image-forming means located on the axis of the catadioptric objective within a central zone defined by the internal diameter of the secondary mirror and for passing light to the same imagereceiving area. The catadioptric objective has at least one lens component R 1  R 2  and R 3  R 4  before the primary mirror R 5  (Fig. 3). Component R 3  R 4  carries the secondary mirror R 6  on its rear surface. The second optical system Fig. 4 may be an inverse telephoto objective of which the above two lens components respectively form the front R 1  R 2  and rear R 18 , R 19  elements of said inverse telephoto objective. The second optical system may alternatively be a graticule injection system. The catadioptric objective used with such injection system may be designed for use with infrared radiation. Optical data are given for four catadioptric objectives and for three inverse telephoto objectives fitted therewith. The catadioptric objective may operate independently of the other image-forming means. (For Figures see next page)
Patent GB-801381-A (GB)
Title: Improvements in or relating to production of uranium dioxide masses
Inventor: MURRAY PETER
IPC: C04B35/51
Filed: 1951-08-22
Abstract: Compact sintered masses of uranium dioxide having a bulk density of about 10 gm. per c.c. are prepared by cold pressing a non-stoichio-metric uranium dioxide containing an excess of oxygen and preferably of composition UO2.09 to UO2.15 and sintering the mass in an inert atmosphere at 1200-1500 DEG  C. or higher for at least a half an hour.  Uranium oxide of defective structure may be prepared by heating uranium dioxide (UO2.0) in air at 300 DEG  C. for a time sufficient to give the desired increase in weight or alternatively it may be prepared by the reduction of U3O8 by hydrogen at temperatures about 650 DEG  C.  According to an example a non-stoichiometric uranium dioxide prepared by reducing U3O8 by hydrogen at 650 DEG  C. and having a composition UO2.13 was compacted by cold pressing at 20,000 p.s.i. and the compacts were sintered at 1400 DEG  C. in argon for 30 minutes; the bulk density was 10 gm. per c.c. The sintered compact masses may be enclosed in sealed envelopes of aluminium, magnesium, beryllium or zirconium and used as nuclear fuel elements in nuclear reactors.  Specification 779,134, [Group XL (a)], is referred to.
Patent GB-1259755-A (GB)
Title: Improvements relating to reciprocating piston compressors
IPC: F04B39/00
Filed: 1970-04-24
Abstract: 1,259,755. Pistons. SULZER BROS Ltd. 24 April, 1970 [24 April, 1969], No. 19855/70. Heading F2T. [Also in Division F1] In a compressor wherein a piston 7 reciprocates in a cylinder 10 without normally making physical contact with the cylinder, the piston is provided with a split ring 25 having longitudinal grooves 26 in its periphery. The ring may be of P.T.F.E. and acts to guide the piston in the event of abnormal operation causing the piston to approach the cylinder. During normal operation gas escaping past labyrinth seals 20 or labyrinths formed in the periphery of the piston, acts on a conical ring 23 to centre the piston. Radial holes 30 pass through the ring 25 and open into the grooves 26 thereby to provide pressure equalization between the inside and outside of the ring. The piston may be double or, as shown, single acting and driven by a piston rod 6 which extends through a cylinder seal for connection to a cross-head.
Patent GB-1260938-A (GB)
Title: Panel straightening machine for thin gauge sheet metal
Inventor: SCHLUTER WALTER
IPC: B21D1/02
Filed: 1969-04-18
Abstract: 1,260,938. Straightening. WILHELMSBURGER MASCHINENFABRIK HINRICHS & SON. 18 April, 1969 [20 April, 1968], No. 19857/69. Heading B3E. A panel straightening machine for thin sheet metal comprises groups of upper straightening rolls mounted in two chocks tiltable about a common axis at the bottom ends of their neighbouring sides, whereas the top of each chock is pivotally attached to at least two and preferably at least four press rods permitting each of the chocks to be tilted relatively to a row of lower straightening rolls and to the other chock by rotation about their common axis. The machine comprises a frame 1 consisting of columns 2 and a cross-head 3 carrying screw-down jacks 7, 8 and 9. Each jack carries a slidable guide block 10 and a press rod pivoted to one or other of the roll-carrying chocks 20, 21. The guide block of the centre jack has a balancing rocker 18 for carrying two press rods 16, 17 pivoted to chocks 20, 21 respectively. The straightening roll 25 forms a pivot about which the two chocks can tilt. The bottom bank of rolls 32 to 40 is so aligned that the axis 41 of roll 40 is in the line of thrust 42 of the jack 9. The outside end of the chock 20 is guided by a slideway 46 which allows vertical and horizontal movement. The chock 21 is guided by a slipper member 51 which only reciprocates vertically. The machine permits adjustment of the entry rolls 22, 32 by raising the leading end of the chock 20 to accommodate a wide range of panel thickness.
Patent GB-281204-A (GB)
Title: Improvements in or relating to mining tubs and like vehicles
IPC: B61D11/00
Filed: 1927-07-27
Abstract: 281,204. Hudson, Ltd., R., and Hudson, P. July 27, 1927. Buyers.-In a headstock for mining-tubs and like vehicles comprising a flanged metal member 1 having wings 2 adapted to be connected to the longitudinals 3 of the vehicle, buffer blocks 5 in engagement with the headstock are provided with protecting-caps 6 that completely enclose the laces of the blocks subject to buffing shocks. The top and bottom flanges of the member 1 are extended at 4 to cover the upper and lower sides of the wood block 5 and to fit within the metal cap 6 which is secured thereto by bolts 8. The cap 6 may be formed with flanges to fit over the member 4, or the headstock mav have an upper extended part 4 and the cap a lower flange to fit over the lower flange of the member 1. The caps may have faces other than those shown.
Patent GB-1055403-A (GB)
Title: Improvements in and relating to recording and/or playback apparatus fed from batteries
IPC: H02P7/29
Filed: 1965-05-12
Abstract: 1,055,403. Automatic speed control. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. May 12, 1965 [May 15, 1964], No. 20052/65. Heading G3R. [Also in Division H3] The turn-table of a record player is driven by motor 2 having a permanent magnet field, speed regulation being afforded by centrifugal governor 3. The speed of the motor and its rotor voltage is thereby kept stable despite changes in battery voltage, the rotor winding being adapted to supply those circuit elements which are highly sensitive to voltage-variations. As shown, the rotor voltage is filtered by R. C. elements 12, 13, and then brought by voltage divider 10, 11, to the value required for base-emitter bias of transistors in a final push-pull stage 9. The base-emitter bias voltage for the pre-amplifier stage 7 and driver stage 8 may also be derived from the voltage divider 10, 11. In an arrangement for magnetic recording/playback apparatus, a high-frequency oscillator is connected in parallel with the rotor winding of the motor. In this embodiment, a transistor is connected in series with the motor and is controlled by a centrifugal governor.
Patent GB-1179594-A (GB)
Title: Thermoelectric Device and Method relating to the Manufacture of same
Inventor: AVIS LEONARD ERIK
IPC: H01L35/26
Filed: 1967-05-01
Abstract: 1,179,594. Thermoelectric devices. MARTINMARIETTA CORP. 1 May, 1967 [12 May. 1966], No. 20073/67. Heading H1K. Semi-conducting thermoelectric elements 4, 5 are bonded to a metal bridge 2 through a layer which comprises thermoelectrically neutral semi-conducting material 3 adjacent the elements 4, 5, but which includes discrete metal portions combined with the semi-conducting material 3 adjacent the bridge 2. The elements 4, 5 may respectively comprise PbTe doped with PbI 2 , and AgSbTe with GeTe. The bridge 2 is of Fe, as is a mesh 1 which is fused thereto under pressure in a hydrogen atmosphere. Alternative metals are stainless steel, Mo or Fe alloys, and the mesh 1. and bridge 2 may be of different metals. A layer 3 of SnTe is then formed by cold pressing a powder or by cooling from a melt. PbTe or GeTe may alternatively be used for the material 3. The elements 4, 5 are then hot pressed on to the layer 3 causing remelting and bonding thereof to the elements 4, 5 and to the mesh 1 and bridge 2. Te may first be provided at the interface of the element 5 and the layer 3 to wet the surface, the excess Te evaporating off during the hot pressing.
Patent GB-831567-A (GB)
Title: Improvements relating to idlers for steel band conveyors
Inventor: DUNCAN ANGUS WELLESLEY
IPC: B65G39/14
Filed: 1957-06-26
Abstract: 831,567. Endless-belt conveyers. MINING ENGINEERING CO. Ltd. April 25, 1958 [June 26, 1957], No. 20104/57. Class 78 (1). A troughing roller assembly for a selftroughing steel band conveyer comprises transversely aligned spaced supporting rollers 11, 18, 18, 11 rotatably mounted on individual rigid spindles which are themselves mounted in such a manner as to permit the supporting surfaces of the rollers to follow the natural transverse curvature of the band as it troughs under load and resilient means 29 for controlling the troughing in accordance with the transverse stiffness of the band and the load carried. Each roller 11 is cylindrical and is mounted by antifriction bearings 12 on a spindle 13 which is secured by a set-pin 14 in the upper end of an arm 15. This arm is pivoted at 16 to the base 10 and is connected by a pin 22 to the adjacent end of the spindle 21 of the roller 18. The other end of this spindle carries a pin 23 which is movable in inclined guides 24 in a fixed bracket 25 and carries a pair of rollers 26. These rollers are engaged by the flat closed head of a sleeve 27 which fits telescopically over a sleeve 28 secured to the base 10. A compression spring 29 is placed between the sleeves.