baber/WOPTO huggingface dataset:
Patent GB-828991-A (GB)
Title: Electrically-driven typewriter or like office machine
IPC: B41J29/387
Filed: 1958-02-27
Abstract: 828,991. Typewriters. TRIUMPH WERKE NURNBERG A. G. Feb. 27, 1958 [March 2, 1857], No. 6371/58. Class 100(4) An electrically driven typewriter or like machine is automatically switched off a certain time after the last key-operation, and likewise any interruption of the mains voltage effects a locking of the keys. A switch 1 is operated by a hand lever 5 whereupon the machine motor 4 starts and an electromagnet 2 is energized to release the key lock 10, 11, 12. The motor drives, through silent friction gears, a roller 28, and slowly raises a segment 27 until a catdh lever 19 is engaged which release a latch mechanism to effect opening of the switch 1 to stop motor and lock the Keys. If, however, type-key is operated a lever 46 is rocked and projection 47 engages an adjustable cam 49 on a lever 23 which draws the segment 27 away from the roller 28 so that a spring 25 can pivot the segment to its lowest position against a cushion 26.
Patent GB-564494-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J19/42
Filed: 1943-04-21
Abstract: 564,494. Electron discharge devices. WESTERN ELECTRIC CO., Inc. April, 21, 1943, No. 6390. Convention date, April 21, 1942. [Class 39 (i)] An electron discharge device comprises a vessel 20 containing a unitary electrode structure including a cathode 63 and a number of co-operating electrodes, held in spaced relation by insulating members 32 and 33 at opposite ends of the structure, heat radiating shields 53 and 54 beyond each of the members 32 and 33 being connected to one of the electrodes and shields 51 and 52 surrounding the first-mentioned shields being connected to another of the electrodes. The first electrode may be a control grid and. the second a suppressor grid. The second shields may also be connected with the cathode. Electrostatic shields 46 and 47 are mounted inside the spacers and are connected to shields 51 and 52. The walls of the container 20 may have shrunk portions 59 to grip the spacer members 32 and 33. The anode 31 is provided with corrugations 42 to strengthen it and a holder 60 for a getter pellet is mounted thereon. The grids consist of helical wires wound on longitudinal rod frames. The cathode includes a heater formed of a sleeve 63 shrunk on a rod 62. The sleeve is formed of refractory insulating material such as aluminium oxide and is provided with a number of bores 64 containing a heating wire coil embedded in aluminium oxide powder which is forced into the bores. One end of the cathode cylinder 70 is spun into contact with the rod 62 and the other end makes resilient contact with the core 63 through fluted portions 72.
Patent GB-1046971-A (GB)
Title: Improvements in or relating to piercing tools
Inventor: REDMAN ALBERT MAURICE
IPC: B21D28/24
Filed: 1962-02-19
Abstract: 1,046,971. Sub-press mechanisms. REDMAN TOOLS Ltd. May 20, 1963 [Feb. 19, 1962], No. 6409/62. Heading B3W. A piercing tool comprises a first part adapted to carry a punch, a second part adapted to carry a die and carrier means adapted to carry stripper means releasably secured thereto so that the stripper means is movable with one of the parts relative to the other part at least during part of the punching movement of the said one part. The sub-set includes elongated top and bottom holders 12 and 11 respectively each having slots 13 to receive clamping bolts 14. The bottom holder has a bore 17 in which a die 19 is locked by a key 24 and a pair of screws 29. The top holder has a boss 31 in which a punch 34 is secured by a key 42, and also has four counterbored holes 48 which slidably receive columns 46. Each column has a reduced threaded end 49 on which is a sleeve 50. A plate 54 has four counterbored holes 53, to receive the sleeves 50 which are each locked by two screws 56, and also has a central bore 61 which is enlarged to receive a circular stripper 65, secured by screws 67. Four springs 57 urge the plate 54 away from the top holder 12. The holders are mounted on a bolster set comprising an upper bolster 75, a lower bolster 74 and one or more pairs of guide pillars 76 which slide in bushes 77. The holder 11 is mounted on the bolster by using a template 79 which fits a slot 78 in the bolster and has dowels 80 to position the holder. The top holder 12 is then positioned on the upper bolster by using a setting plug 81, prior to fitting the die 19, punch 34 and the plate 54. Alternatively the punch 34 and die 19 can be used to align the holders 11 and 12 before fitting the plate 54. In a modification the holders are aligned by using a template fitted to each bolster.
Patent GB-198442-A (GB)
Title: Improvements in addressing or like printing machines
IPC: B41L47/46
Filed: 1922-03-04
Abstract: 198,442. Barman, L. M., and Roneo, Ltd. March 4, 1922. Addressing and like machines.-Relates to addressing or like printing-machines of the type in which stencil cards E stacked in a hopper A are removed one at a time by a reciprocating pusher R working in a track B and are positioned for printing between a segmental inking-roller J and a similarly-formed impression roller. The pusher R is provided with a central slot 1, Fig. 2, below which is positioned a mushroom-shaped member 2, the stem 2<1> of which passes through the main casting D. Means are provided for acting upon the end of the stem 2<1> to raise the member 2, the head of which thereupon engages the lowermost stencil and raises the pile clear of the pusher whereby repeated impressions may be made from one card by re-inserting it as often as required. The stem 2<1> is enclosed in a casing 7, Fig. 3, fixed to the casting D, a slot being provided in the casing for a bar 3 having an inclined end 3<a> engaging the end of the stem. The bar 3 is recipocrated to raise or lower the member 2 bv means of a bent crank 4 mounted in a bracket 5 and operated by a handle 6. The roller J, which is supplied with ink from a container H by rollers G, is mounted on a shaft K provided with a driving crank L, the shaft O carrying the impression collar and a crank-shaft Q for operating the pusher R being driven therefrom by gears M, P.
Patent GB-638464-A (GB)
Title: Improvements in or relating to positive feed-back circuit-arrangements
IPC: H03F1/40
Filed: 1948-03-01
Abstract: 638,464. Valve generating and amplifying circuits. PHILIPS ELECTRICAL, Ltd. March 1, 1948, No. 6438. Convention date, March 4, 1947. [Classes 40 (v) and 40 (vi)] In an oscillator circuit in which frequencyselective feedback is produced by back-coupling a coil 4 in the anode circuit to a tuned circuit 2 connected to the grid, and in which a cathode resistance 3 gives negative feedback for all frequencies, the amplitude of oscillation is rendered independent of the setting of the control 3 by means of a further frequencyselective negative feedback path comprising a coil 6 back-coupling an additional positivelybiassed grid to the control grid circuit. A resistance 9 is also included in the anode circuit. In this arrangement the amplitude of oscillation is limited by the increase of negative feedback brought about by an increase in current and mutual conductance to the positively-biassed grid which occurs when the anode current decreases. The arrangement may also be used as a frequency-selective amplifier, the signal being applied to the suppressor-grid and the negative feedback increased by introduction of a further resistance 7 into the cathode lead.
Patent GB-570658-A (GB)
Title: Polarized outlet section for electric wiring system
IPC: H01R25/16
Filed: 1943-04-22
Abstract: 570,658. Two - part couplings. O'BRIEN, J. F. April 22, 1943. No. 6473. Convention date, April 27, 1942. [Class 38 (i)] A wall socket for a unit wiring system comprises a cap 12 and a base 20 enclosing between them an insulating plate 25 to the underside of which are attached conductors 24 and to the upper side contact clips 18 located beneath plug blade inlet apertures 13. Various mountings of the clips 18 can be provided on interchangeable plates 25 so that the socket can be used in a two-wire system or a three-wire system, the clips 18 being also carried on short arms 18<1> that can be turned on a pivot mounting to bring the clips into different positions. One end of each conductor 24 is formed as a plug 24a to engage the conductors 27 of an adjacent wiring unit, and the other end carries a corresponding socket 26. The conductors are held in place by longitudinal barriers formed on the base 20 and by transverse partitions 14, 15, 15a having notches to fit over the conductors as described in Specification 559,266. The clips 18 are separated in cavities 17 on the cap 12.
Patent GB-160358-A (GB)
Title: Improvements in sewing machines
IPC: D05B75/02
Filed: 1920-03-03
Abstract: 160,358. Arc & General Equipment, Ltd., and Jones, A. Denman-. March 3, 1920. Portable machines; frames.-A light machineis constructed with a thin sheet-metal cylindrical work-supporting arm A held in clamp C integral with a table or like clamp B. The machine can be turned within the clamp C into a suitable position for use. Thread-tensioning devices.-The thread tension is varied by the rotation of an arm K having a slot N through which, on a disc L, can be read the description of the kind of work for which theparticular setting of the arm is suitable.
Patent GB-365848-A (GB)
Title: Improvements in or relating to book covers
IPC: B42D3/00
Filed: 1931-03-03
Abstract: 365,848. Book covers. SCHADE, F. S., Holyoke, Massachusetts, U.S.A. March 3, 1931, No. 6546. [Classes 16 and 146 (i).] A book cover is provided at its edges with a channelled strip 3 which is secured, under tension by means of metal clips 6 which embrace the end portions of the strip and are secured to the cover. The channelled strip 3 may be of rubber or felt, and its side lips 5 may be secured to the cover by cement. Hinge-eyes 8 may be formed at the outer ends of the clips, and similar eyes on the sheetholding structure of the book may be aligned therewith to receive a hinge-pin. The clips 6 are secured to the cover by rivets 7. The book covers are made of a material having a hard surface such as compressed wood pulp or cellulose.
Patent GB-706817-A (GB)
Title: An improved cooling device for chill moulds for continuous elongated castings
IPC: B22D11/041
Filed: 1952-03-14
Abstract: 706,817. Cooling systems for chill moulds. BOHLER & CO. AKT.-GES., GEB. March 14, 1952 [March 16, 1951], No. 6684/52. Class 64(3) [Also in Group XXII] A cooling system for a continuous-casting mould 1 comprising a pump 4 for circulating coolant liquid e.g. water through the mould from a tank 5, is provided with a gravity supply tank 8 from which coolant liquid is passed through the mould by way of an automatically opening non-return valve 6 on a failure of the first supply.
Patent GB-248181-A (GB)
Title: Improvements in sight-testing apparatus
IPC: A61B3/04
Filed: 1925-03-12
Abstract: 248,181. Clarke, C. March 12, 1925. Sight-testing apparatus of the type in which a battery of loose lenses is moved past an eye aperture by a controlling star wheel, is constructed in the from of a triangular casing A having walls B between which the lenses Care moved. Two eye apertures D are fitted at a convenient height having a pivoted shutter F so that either may be used. The lenses are moved by the star wheel H, with which co-operates a spring-operated detent L so that each lens in turn may be located At the eye-aperture D. In gear with a wheel N on the starwheel shaft is a wheel O actuating a toothed indicating disc P showing in the aperture Q the lenses opposite the eye-apertures D. Cells R secured to the front of the casing permit additional lenses to be used.
Patent GB-870819-A (GB)
Title: Improvements relating to machines for generating tooth surfaces of gears and like toothed parts
IPC: B23F9/10
Filed: 1959-02-26
Abstract: 870,819. Converting rotary into reciprocatory motion. GLEASON WORKS. Feb. 26, 1959 [March 5, 1958], No. 6720/59. Addition to 793,831. Class 80 (1). [Also in Group XXII] A machine as claimed in the parent Specification for cutting or grinding gears comprising a tool-carrying cradle 11 rotatable in a frame, a column member 18 adjustable relatively to the frame about an axis perpendicular to, and intersecting, the cradle axis 12, a work-head member 16 reciprocable on the column member in a direction parallel to the first-mentioned axis, a work-spindle rotatable in the work-head member about an axis 15 perpendicular to and intersecting the first-mentioned axis, a drive train for connecting the cradle, work-spindle and work-head member for effecting simultaneous oscillation and rotation respectively of the cradle and the work-spindle and reciprocation of the work-head member, the drive train comprising a cam 69 rotatable in one of said members for reciprocating the work-head member, and a unidirectionally rotatable shaft geared to both the cam and the work-spindle for rotating each of them unidirectionally. The cam 69 is engaged by a follower 84 on an arm 85 pivoted to the column 18 at 93. The arm 85 also carries a roller 87 on a block 97 which can be adjusted to-and-from the pivot by a screw 98 and locked by a gib 102. The roller 87 engages a groove in the slide 17 so that rotation of the cam 69 reciprocates the head by a variable stroke. When the roller 87 is coincident with the pivot 93, the slide 17 can be locked and no reciprocation takes place. Specification 544, 892 also is referred to.
Patent GB-435930-A (GB)
Title: Improvements in or relating to public address systems and like sound amplifying arrangements
IPC: H04S3/00
Filed: 1934-03-02
Abstract: 435,930. Public address systems. ROUND, H. J., Westfield, Muswell Hill, London. March 2, 1934, No. 6795. [Class 40 (iv)] A public address system suitable for a theatre or the like comprises one or more directional microphones, amplifiers and loudspeakers, the loud-speaker or loud-speakers being located outside the pick-up area of the microphone or microphones to prevent acoustic reaction, and the pick-up area coinciding substantially with the area of the stage or other restricted area from which the sound is emitted. In the system shown which also provides directional effects, two microphones or banks of microphones M1, M2 placed in the wings or boxes and directed preferably somewhat downwardly towards the stage S, each operates through an amplifier A1, A2 one or more loud-speakers LS1, LS2 correspondingly located in front of and towards the sides of the stage, outside the pick-up areas PU1, PU2 of the microphones. The loud-speakers may have baffles to prevent rearward radiation. All the microphones may be connected to a common amplifier connected to all the loud-speakers in parallel. The microphones may have felt &c. lined boxes for obtaining directional effects as described in Specification 364,564 or horns or mirrors may be employed. In the modification, Fig. 2 (not shown), a single microphone directed towards the stage is connected to a central single loud-speaker or bank of loudspeakers.
Patent GB-1090035-A (GB)
Title: Improvements in or relating to folding machines
Inventor: FRIESTEDT REINHOLD
IPC: B65H45/18
Filed: 1965-02-17
Abstract: 1,090,035. Folding machines. LEIPZIGER BUCHBINDEREIMASC H IN ENWER K E VEB. Feb. 17, 1965, No. 6865/65. Heading B6H. The folding blade 2, Fig. I (not shown), of a sheet-folding machine is adjustable in height above the sheet entry plane P of a pair of folding rollers by means of an eccentric mounting 7 of a drive member, the mounting being in a stationary support so that adjustment may be made during operation of the folding machine. The eccentric 7 may be manually rotated for the adjustment and held in position by a disc spring 10. The drive member mounted in the eccentric 7 may be a bell-crank 4, one end of which engages with the blade 2 and the other with linkage 12, 13 operated by a follower and drive cam 14. In a modification, Fig. 3 (not shown), the bell-crank 4 is coupled to the blade 2 by a further link 5.
Patent GB-642842-A (GB)
Title: Improvements in or relating to electric wave amplifiers
Inventor: HEATON-ARMSTRONG LOUIS JOHN
IPC: H03C1/06
Filed: 1948-03-05
Abstract: 642,842. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd. March 5, 1948, No. 6867. [Classes 40 (v) and 40 (vi)] In a high-frequency amplifier in which grid current occurs in one stage distortion is reduced by feeding back the rectified envelope of the signal wave to an earlier stage in positive phase. Stage 2, Fig. 1, of a transmitting amplifier comprises a cathode-excited valve operating in class B, with the grid grounded for high-frequencies by a condenser 22. When grid current occurs, thereby reducing the gain, a voltage proportional to the envelope of the signal is developed across resistance 21 by grid rectification and is fed back to the cathode circuit of a preceding stage 1 so as to increase its gain, the overall gain remaining constant. Another embodiment, Fig. 3, comprises a frequencychanging arrangement in which signals are amplified in stages 1, 34 and stage 35 comprises a mixing valve with cathode injection of the beat frequency from a local oscillator 61. The desired side-band is selected by a tuned circuit 48 and amplified, the amplifier terminating in a class-B stage 2 from the grid of which rectified positive feedback is taken to the cathode circuit of either of the stages 1, 34 as selected by a switch 51. The overall phase-shift is adjusted by means of a network 38. In addition, negative feedback is applied from the grid or anode circuit of the valve 2, as selected by a switch 56, to the grid of the valve 34, an auxiliary frequency-changer 58 being interposed in order to re-convert the feedback voltage to the frequency of the incoming signal.
Patent GB-624584-A (GB)
Title: Improvements in or relating to die casting pumps
IPC: B22D17/04
Filed: 1947-03-12
Abstract: 624,584. Cylinders. BULLOCK, H. G. V., and BULLOCK, V. J. A. March 12 1947, No. 6883. [Class 122(i)] [Also in Group XXVIII] In a die-casting pump, the cylinder E has a shoulder E<1> on which rests a removable flange F having holes through which pass studs G by which the cylinder is secured to the pump body A so that a shoulder E<2> on the cylinder makes a fluid-tight joint with the body.
Patent GB-843595-A (GB)
Title: Improvements in and relating to motor vehicle brake control mechanisms
IPC: B60T1/00
Filed: 1959-02-27
Abstract: 843,595. Motor vehicle brakes. GENERAL MOTORS CORPORATION. Feb. 27, 1959 [April 4, 1958], No. 6894/59. Class 79(5). [Also in Group XXXIV] A detent brake for a vehicle transmission having a toothed member 31 on a pawl 26 normally, engages with a recess in a toothed locking gear 22,through a rod 13 and operating lever 14 on the steering wheel. A torsion spring 54 positioned on the shaft 34 between the arms 48 and the central part of the transfer lever 46 includes a leg 56 in engagement with the lever 46 and an opposite leg 58 in engagement with lateral extension 49 on the control lever 32, the spring 54 exerts a constant bias which urges down surfaces 60 and 62 on the lateral extensions 49 of the control lever 32 against the arm 48 of the transfer lever 46 respectively. When the normal hydraulic master cylinder 16 is operated, hydraulic pressure acts upon a small piston 86 in cylinder 20 to apply a thrust to rod 88, which is forced downwardly against control surface 92 and urges pawl element 26 towards the disengaged position shown in figure 3.
Patent GB-281910-A (GB)
Title: Improvements in and relating to gloves
IPC: A63B71/14
Filed: 1927-03-12
Abstract: 281,910. Fernie, T. R. March 12, 1927. Gloves. - A glove, particularly for the right hand of golfers, is provided with the fastening in the rear, and with an aperture 4 in the palm to enable the thumb of the left hand to pass through and maintain the two hands in locked position during driving. The back part of the glove may be cut away, as shown, and provided with bracing elastic tapes 6. Preferably, also, the palm portion is braced by elastic tapes 7. Lefthanded gloves may be similarly constructed. The gloves may be fully fingered, or, as shown, be constructed as mittens. The wrist portion may comprise elastic portions 3.
Patent GB-432740-A (GB)
Title: Improvements in or relating to the driving mechanism of package winding machines
IPC: B65H54/38
Filed: 1934-03-05
Abstract: 432,740. Expanding-pulley gearing. McKEAN, J. 0., 82, Court Street, Westfield, Massachusetts, U.S.A. March 5, 1934, No. 6949. Convention date, March 15, 1933. [Class 80 (ii)] [See also Group IX] Expanding-pulley gearing for driving the roll shaft 4 of a package-winding machine comprises twin belts 10, connecting the driving motor 6 to expanding pulleys 12, 13 on the roll shaft, the speed of the latter being varied, from time to time by altering the tension on the belts. Thus, the belts are tensioned by means of pulleys 34 carred by an arm 32 on a shaft 31 which is itself rocked bv means of a cam 36. The cam is actuated from the roll shaft 4 through worm reduction-gearing 19, 20 and a belt drive 23 ; and it is of such a shape that the shaft is speeded up more rapidly than it is slowed down. The pulleys on the roll shaft comprise a central member 11 fast to the shaft and outer spring- pressed members 12, 13 pierced to slide on pegs 14 projecting on either side of the central member. Specification 402,015, [Group IX], is referred to.
Patent GB-879208-A (GB)
Title: Process for the manufacture of chloracetates and aminoacetates of saturated and unsaturated 21-hydroxy-pregnane compounds and acid addition products of the aminoacetates
IPC: C07J41/00
Filed: 1958-03-04
Abstract: 21-Chloroacetates of saturated and unsaturated 21-hydroxy-pregnane compounds are prepared by reacting the required 21-hydroxy pregnane compounds with chloracetic anhydride in the presence of an organic tertiary base.  21-Amino-acetates of saturated and unsaturated 21-hydroxy-pregnane compounds are prepared by reacting the 21-chloracetates prepared by the above process with amines containing no hydroxyl groups in the presence of an inert solvent.  The 21-hydroxy-pregnane compound and the chloracetic anhydride are preferably reacted in equimolecular proportions, e.g. in an inert solvent such as ether.  A suitable organic tertiary base is pyridine. The reaction with the chloracetic anhydride is preferably carried out at a temperature between -10 DEG  and +30 DEG C.  The inert solvent used in the reaction between the 21-chloracetate and the amine should preferably have a boiling point between 30 DEG  and 120 DEG C., e.g. tetrahydrofuran. The amine used to form the 21-amino-acetate may be a secondary amine such as morpholine, piperidine, diethylamine or methylpiperazine.  The 21-hydroxy-pregnane reactant may be a 21-hydroxy-pregnane having a saturated ring system or an unsaturated ring A and/or ring B-particularly a 3-keto-21-hydroxy-pregnane having a saturated or unsaturated ring A such as hydrocortisone, 21-hydroxy-pregnane-3,20-dione and D 1,4-pregnadiene-3,20-11,17,21-triol and the corresponding compounds unsubstituted in the 11-position or containing a keto group in the 11-position.  The 21-aminoacetates may be converted into a therapeutically acceptable acid addition product with an acid, e.g. hydrochloric acid.  In the examples there are prepared the 21-chloracetates of 21-hydroxy-pregnane-3,20-dione, hydrocortisone, prednisolone and 9-fluoro-hydrocortisone, the 21-diethylamino-acetate, 21-piperidinoacetate, 21-morpholino-acetate, and 21-(N-methyl-piperazino)-acetate of hydrocortisone and the hydrochloride salts thereof, the 21-diethyl-amino-acetate, 21-piperidino-acetate and 21-morpholino-acetate of 21-hydroxypregnane-3,20-dione and the hydrochloride salts thereof, the 21-morpholino-acetate and the 21-piperidino-acetate of prednisolone and the hydrochloride salts thereof, and the 21-piperidino-acetate and 21-(N-methylpiperazino)- acetate of 9-fluorohydrocortisone.  Specification 862,370 is referred to.