baber/WOPTO huggingface dataset:
Patent GB-407323-A (GB)
Title: Method and means for shaping the internal surfaces of barrels of firearms or other projectile propelling apparatus
IPC: B23D5/02
Filed: 1932-09-09
Abstract: 407,323. Boring and rifling gun barrels. GERLICH, H. E. G. T., Oakdene, Hurst Road, Bexley, Kent. Sept. 9, 1932, No. 25135. [Class 83 (iii).] In boring and rifling the barrel of a projectilepropelling device, the groove-bore of which is to have portions of constant and varying diameter, the lands bore is first cut and then the bore is rifled by means comprising two or more cutters arranged in groups, each group being in one plane and perpendicular to the axis of a cutter box carrying the cutters, and a pattern rod controlling the cutters disposed axially with respect to the cutter-box having a part shaped similarly to the required part of the barrel to be cut. In a machine for the boring operation, Fig. 1, the tubular cutter box 5 rotated by gearing 8 passes within the bore of a gun barrel 1 and is guided by a ball-bearing bush 6. Axial feed of the cutter-box is effected by a screw and nut 9, 10, while the relative axial motion of the pattern rod 11 and cutter-box necessary to feed the cutters radially is by the screw and nut gear 12, 13 actuated by a ratchet device. For rifling, Fig. 6, the cutter box is rotatably connected to a slide 28 which moves on ways 29, the limited rotation necessary to give the required pitch is effected by an adjustable slotted link 33 which controls rack and pinion mechanism 31, 32 ; thus as the cutterbox is fed axially it receives a limited rotative movement, a link with a curved slot may be substituted for that shown. The cutters 17, Fig. 8, have domed ends urged against the pattern rod 11 by springs 20 the cutting edges 18 are wider than the adjacent part of the cutter, Fig. 4, to provide clearance for chips and for rifling the plane of the cutter may be inclined to the axis of the cutter-box, Fig. 3. The pattern rod may be used for shaping the bore, which may be effected in a number of cuts including working from both ends of the barrel, and then substituted by another for the rifling which is of varying depth; the pattern rod, Fig. 4, is of rectangular section but may be circular when required, in which case it may be clamped to the cutter-box and used for boring a length of constant diameter ; more than one set of cutters may be used and also pilot pins of similar form to the cutters may be fitted to the cutter-box to guide the same after the first cut in a rifling operation. Pivoted cutters are described and modifications of the machine in which the work rotates in lieu of the cutter-box. Specification 374,091, [Group XXI], is referred to.
Patent GB-1427261-A (GB)
Title: Integrated circuits
IPC: H01L29/08
Filed: 1973-05-25
Abstract: 1427261 Integrated circuits PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 25 May 1973 [31 May 1972] 25152/73 Heading H1K A tub-shaped isolation region 304 surrounding a device-containing island in an integrated circuit and denning PN junctions with the outer region 303/307/308/309 of the device and with the surrounding semi-conductor body 305 is substantially short-circuited to a part 308 of the device region 303/307/308/309. Injection of carriers from the latter region into the isolation region 304 causing a leakage current from the device to the body 305, is thus prevented. Among the various devices which may be thus isolated are conventional NPN bipolar transistors having buried collector layers (Fig. 1, not shown) and lateral PNPN switches (Fig. 2, not shown). The device shown, however, is a vertical PNPN switch having inter-nested regions 318, 301, 302 and 303/307/308/309 of alternating conductivity types. The last-mentioned region has relatively low-resistivity portions 307, 308, 309 one of which, 309, is short-circuited to the isolation region 304 by a metal layer 320. This device may operate as a conventional PNP bipolar transistor if the regions 302 and 303 are connected by another short-circuit. With such a short-circuit an additional N-type region may be nested within the P-type region 318 to provide a four-layer switch of complementary layer order to that shown in Fig. 3. Diodes, resistors, capacitors and FETs may be formed in the isolated islands together with the multilayer devices already described. The tubshaped isolation regions surrounding adjacent islands may share a common portion between the two islands, to which portion a common short-circuiting contact for both islands is made. It is stated that the necessary shortcircuiting effect may be obtained with a low threshold-voltage diode, e.g. a Schottky diode. Si and III-V compound semi-conductors are referred to.
Patent GB-226501-A (GB)
Title: Improvements in the construction of metal casks or barrels
IPC: B21D51/20
Filed: 1924-10-23
Abstract: 226,501. Jorin Soc. Anon., E. Dec. 21, 1923, [Convention date]. Metal casks; heads; hoops. - The end hoops a and rolling hoops j of a metal barrel are held in position by permanent distortion of the cylindrical body e providing an engaging groove f for the end hoop and an enlargement having beads l, m between which the rolling hoops j are held clamped. The end hoops d have two beads b, c, of which the first engages the body and the second engages the meeting edges of the head and body, a knurled groove i serving to hold the head and body together.
Patent GB-900433-A (GB)
Title: Label dispensing device
IPC: B65C11/00
Filed: 1960-07-20
Abstract: 900,433. Label-dispensers. MINNESOTA MINING: & MANUFACTURING CO. July 20. 1960 [Sept. 25, 1959], No. 25252/60. Class 94(1). [Also in Group IX] A label dispenser of the kind which removes labels from a carrier web, includes a take-up roll for the waste web, the roll being in two detachable parts to facilitate removal of the coiled web. The web bearing the labels passes from a roll 13 over a plate 20 and heater 24 to the stripping edge 22 and from there to the take-up roll 23. The roll comprises a hub 32 and flange 33 fixed on spindle 35, and a removable flange 37 having a pin 40 engageable with one of a series of recesses 34 in the hub. In another form, Figs. 8, 9 (not shown), the the pin engages a single flat on the hub. The roll 23 may be rotated through gearing by a hand lever, Fig. 7 (not shown), or may be driven by a motor 53 through gearing 51, 36. A rheostat may enable motor speed to be varied as the roll increases in diameter. The take-up roll is carried on arms 42 mounted on a cover 46 pivoted at 47 for ready access. A presser plate 25 with a spring 27 bears on the labels above the plate 20. The plate 25 may have an attached magnet in lieu of the spring.
Patent GB-286174-A (GB)
Title: Improvements in the reciprocating bed motion of printing and analogous machines
IPC: B41F3/58
Filed: 1927-09-26
Abstract: 286,174. Cleathero, E. T. Sept. 26, 1927. Addition to 260,486. Bed-reciprocating apparatus.-The bed-reciprocating mechanism described in the parent Specification is modified by replacing the gear-andrack reversing mechanism, which consisted of a rack on the bed geared to a rack on a reciprocating carriage l, by a pawl-and-abutment mechanism for driving the bed during reversal. The carriage l is operated by a crank m on a shaft o driven at thrice the speed of the segmental driving-gears d, e, and during the times of reversal the carriage l is connected to the bed by means of abutments i, j on the bed which are held between a projecting piece l<1> of the carriage and one edge of a double pivoted pawl k<1>. The pawl is controlled by a bowl k<2> engaging a cam groove in a fixed bracket t. As shown the right end of pawl k<1> is coming out of operation after the bed has been reversed from moving towards the left to moving towards the right, and after the wheel d has finished its drive to the right, the reversal of motion is effected by the engagement of block i between the projection l<1> and the left pawl k<1>.
Patent GB-469917-A (GB)
Title: Improvements in and relating to copying milling machines
IPC: B23C3/20
Filed: 1936-09-17
Abstract: 469,917. Milling - machines. ATTI, R. Sept. 17, 1936, No. 25336. [Class 83 (iii)] In a milling-machine for producing moulds for making golf balls, a pattern 41 and mould blank 33 are rigidly mounted together for movement about two perpendicular axes with respect to a cutter 13 and feeler 44. The cutterspindle 11 is connected to a rod 8 slidable axially in a pedestal 7 on a slide 4 which is adjustably clamped at 5 to a guideway on the machine base 1. The spindle 11 is journalled in a pedestal 6 on the slide 4, is rotated by a pulley 9 and fed axially towards the work by a hand lever 52 and a non-rotatable socket 54. The blank 33 is secured by a screw 36 in a chuck 32 secured to a spindle 31 journalled in a bracket 28 secured to a turntable 19 rotatable about a fixed pivot 20 on the base 1. The rear end of the spindle 31 carries a holder 35 to which the pattern 41 is secured by screws 42, the pattern and blank being concentric and their diametral plane 40 containing the axis of the pivot 20. In operation a feeler 44 on a standard 46 is pressed by a spring 47 against the pattern and the pattern and blank are oscillated about the axes 20, 31 whilst the feeler traverses the grooves 43 of the pattern. The cutter is fed into the work by the lever 52, the depth of cut being limited by a stop 14 on the spindle 11 engaging a collar 15 on the pedestal 6. A handle for oscillating the pattern may be attached thereto by means of a hole 51 and the feeler 44 may be held out of engagement with the pattern by deflecting the spring 47 to one side of a head 48 on the feeler, as shown in full lines in the Figure. The cutter may be fed into the work by a spring. Cuttings, catching and removing ; lubricating cutting-tools and work.-Oil is fed to the cutter 13 by means of a pump and pipe 26 and the overflow is collected in a cup-shaped top 21 of the pivot 20 and conducted through the pivot and thence by a pipe 24 to be re-circulated by the pump.
Patent GB-1087454-A (GB)
Title: Release mechanisms for indicating rain, flood and fire
IPC: G08B23/00
Filed: 1966-07-21
Abstract: 1,087,454. Actuation of switches; thermal switches. D. T. MUMFORD. July 21, 1966, No. 25350/64. Heading H2B. [Also in Division G1] In a release mechanism suitable for actuating an alarm system, e.g. for indicating fire or flood, there is provided a strip of material 3 secured at both ends by wedges 2 and clamps to a frame, the material being tensioned by spring- loaded keys 5 and adapted to rupture under predetermined conditions. The material may be of absorbent material which, when acting as a rain or flood indicator, ruptures at a predetermined degree of wetness releasing spring-loaded keys 5 which pivot upwardly to contact leafspring 6 with a further spring 8, either closing an electric alarm circuit or actuating a mechanical alarm. In the case of a fire alarm, the material 3 is formed of strips bonded together by wax which melts at a predetermined temperature.
Patent GB-1492035-A (GB)
Title: Manufacture of surfaces containing pulverised material
IPC: B44C3/04
Filed: 1974-10-08
Abstract: 1492035 Moulding textured articles ABITA INTERNATIONAL (UK) Ltd 7 Jan 1976 [8 Oct 1974] 25542/74 Addition to 1467799 Heading B5A The parent Specification 1,467,799 is modified in that the pulverized material and the catalysed fluid polyester resin are applied separately to the mould, the pulverized material being applied first.
Patent GB-445271-A (GB)
Title: Improvements in or relating to fuzes for projectiles
IPC: F42C9/14
Filed: 1934-09-05
Abstract: 445,271. Projectile fuzes. VICKERSARMSTRONGS, Ltd., MORPETH. W., and HESELTINE, J. C. W., Vickers House, Broadway, Westminster. Sept. 5, 1934, No. 25583. [Class 9 (i)] Relates to combined time -and -percussion fuzes of the kind having a time-action striker H<1> and priming cap H within a direct-action impact striker F. According to the invention, the priming cap H bears against a shoulder H<5> on the body B of the fuze, so that the spring H6 separating the priming cap H from the time-action striker H<1> also serves to urge the direct-action striker F forward and thus relieves pressure therefrom on a safety device such as a centrifugal bolt f. The direct-action striker F, which is hollow to receive the time-action striker H<1> and priming cap H is cut out at its side to allow the priming cap to project out to bear on the shoulder H<6>. Passages, such as H<2>, allow the flash from the priming cap H<1> to pass to a powder pellet of a vent a<6> and also at one end of a short length a of time composition in the upper face of the ring A, which gives a minimum time zone of safety. The flash from the other end of this passes to the time composition a<2> in the lower face of the ring. When this ring is set for a given time, it establishes communication with powder pellets b<1> leading to the priming cap J, which is fired by this flash or by the blow of the direct-action striker F. The centrifugal bolt f is interconnected with a centrifugal shutter f<3> by a spindle f<2>, as described in Specification 440,338.
Patent GB-951779-A (GB)
Title: A control system for electric current converters
IPC: H02M7/15
Filed: 1960-07-22
Abstract: 951.779. Converting. LICENTIA PATENTVERWALTUNGS-C.m.b.H. July 22, 1960 [July 28, 1959], No. 25591/60. Heading H2F. In an arrangement comprising a pair of backto-back rectifiers 2 and 3 in which 2 acts as a rectifier and 3 acts as an inverter, pulses from a single arrangement 7 control both the rectifiers, and these pulses are derived from a waveform obtained by the combination of three waveforms (Fig. 1b) an alternating voltage U 1 , a steady control voltage V st , and a square waveform U 2 . Without the square waveform pulses A and B are derived at cross-over points a, b. The pulse A controls the rectifier 2 and the pulse B the inverter 3. Increase in the control voltage U st  advances pulse A and retards pulse B, that is, these pulses are displaced in opposite directions and the output voltage is thereby altered, but current circulating in the valves is not affected. When U 2  is added to U 1  to give U 1 <SP>1</SP> the cross-over points are displaced to give pulses A<SP>1</SP>, B<SP>1</SP> and variation of U 2  displaces the pulses in the same direction, whereby the circulating current is altered. The three waveforms are derived from a circuit. Fig. 3, wherein alternating current supplied at terminals 17a, 17b is rectified by a bridge 16 and smoothed by a choke 12 so as to give a square waveform alternating current. The alternating voltage waveform is derived from a condenser 11, the square waveform from a variable resistor 14 and the steady control voltage is supplied at terminals 18a, 18b, the output pulses being derived from a device 15. An arrangement for polyphase six pulse operation is disclosed.
Patent GB-601418-A (GB)
Title: Instruments for ascertaining the drunkenness of screw threads
IPC: G01B5/20
Filed: 1945-10-02
Abstract: 601,418. Gauging screw-threads. WILSON, J., and BARNES, D. C. Oct. 2, 1945, No. 25612. [Class 106 (ii)] A device for ascertaining in a screw whether or not there is uneven progress of the helix round the screw comprises a V-shaped mounting having central limbs 1b provided with side extensions 1a having hardened pads 2 adapted to rest on the external diameter of the screw, and a fixed feeler point 10 and an indicator 18 having a stylus 19 carried by the mounting, the point 10 and stylus 19 being in contact with the thread at points angularly separated round the axis of the screw. The two limbs 1b are slotted, one to take the shank of the feeler 10 which is lockable in position by a nut 8, and the other to take a slidable carriage, lockable in position by a screw-and-nut device 15, on which is a split clamp 21. The indicator 18 has a shank fitted friction-tight in the clamp 21 so that it can be rocked for adjustment. The slot in which slides the carriage with indicator 18 may be slightly inclined laterally in accordance with the expected range of pitch at the various screw diameters. Preferably, the angle formed by the limbs 1b is smaller than that formed by the pads 2, the arrangement being such that the depth of penetration of the feeler points into the thread space of threads of different diameters increases as the screw diameter increases. The carriage and fixed feeler 10 are set in the slots according to scale markings on the limbs 1b. A knob 22 is provided at each side of the limbs 1b. In use, the feeler 10 and stylus 19 are adjusted to engage the same thread-groove, and the mounting and screw relatively rotated. Movement of the indicator pointer reveals the amount of unevenness of the pitch of the helix.
Patent GB-594308-A (GB)
Title: Improvements in or relating to apparatus for indicating or measuring small dimensions
IPC: G01B7/34
Filed: 1944-12-21
Abstract: 594,308. Linear - dimension gauges ; measuring surface roughness. CHALMERS, R. G. Dec. 21, 1944, No. 25663. [Class 106 (ii)] [Also in Groups XXXVIII and XXXIX] Apparatus for indicating or measuring small dimensions comprises a stylus or other dimensiondetecting element arranged to vary the resonant frequency of a piezo crystal by varying the air gap between the crystal and its associated electrodes, the crystal controlling the frequency of a valve oscillator, the resulting frequency-modified signals being converted into voltage or current variations which are functions of the displacement of the stylus. As applied to an apparatus for measuring surface roughness, the crystal 2, Fig. 1, is held in a holder 6 by a spring 3 and plate 5, the latter forming one of the crystal electrodes. The holder 6 is mounted by means of a strip hinge 7 in an arm 1 which is traversed across the surface under examination. The surface is explored by the stylus 14 on an arm 13 also pivoted by a hinge 15 coaxial with the first hinge 7 and carrying a plate 12 forming the other electrode associated with the crystal. The initial position of the holder 6 is adjusted by a screw 8. The piezo crystal controls a variable oscillator VO, Fig. 2, a harmonic being selected from the oscillator output by a tuned circuit FM and applied to a frequency-changing valve circuit FCV also fed with a fixed frequency from an oscillator FO. The modulated signal from the circuit FCV is passed through a limiter valve and frequency-modulation detector LD to a bridge-type valve voltmeter A connected to a recording milliameter RV, Fig. 3. The average value of surface roughness is measured by applying the output from the voltmeter A to a voltage-doubling rectifier RC loaded by two equal resistances L2, L3 connected in parallel with condensers C1, C2. These latter start to charge at the beginning of the traverse of the stylus across the surface, the final potentials being a measure of the average displacement of the stylus about each side of a mean line. The sum (or difference) of these potentials is read by a valve voltmeter VV. In a modification, the average value is obtained by replacing the fixed-frequency oscillator FO by an oscillator controlled from the output of the frequency-modulation detector LD.
Patent GB-205514-A (GB)
Title: Improvements in vacuum tubes of the three-electrodes type
IPC: H01J19/38
Filed: 1923-01-09
Abstract: 205,514. PÚri, F. Oct. 7, 1922, [Convention date]. Vacuum tubes. - A grid consists of horizontal elements 13 of circular shape mounted in parallel relationship by tubular stays 14 or other means. The elements may be perforated as shown at 15 or provided with struck-up portions 17.
Patent GB-679485-A (GB)
Title: Improvements in or relating to golf bag or the like carriers on wheels
IPC: B62B1/04
Filed: 1949-10-05
Abstract: 679,485. Golf bag wheeled carriers. HUDSON, R. C. Oct. 2, 1950 [Oct. 5, 1949; Oct. 28, 1949], Nos. 25725/49 and 27746/49. Class 108(i) A collapsable golf bag or the like carrier has a main frame 1, Figs. 2. 4, comprising a straight tube 2, a base plate 3 which may swivel around the tube on its hub 3a when it is desired to stow the carrier, a bag holding spring clip 4, adjustable track wheels 1 carried by link rods 19, 20, 36 and 37, hinged to a fixed sleeve 17, and a handle 32 which when depressed towards the tube 2 from the Fig 2 position moves the link rods and wheels together by means of a rod 31, sliding sleeve 18, and struts 30. The link rods 36, 37, maintain the axes of the wheels horizontal at all wheel track widths. the golf bag 7 is held, at the bottom by a strap 15 and a clamp 12 secured to a bent steel bar 13 adjustable through a socket 14, and at the top by clips 8 on the device 4 which is attached to a short tube adjustable in the tube 2. In the collapsed position of the carrier, Fig. 1 (not shown). the link rods and handle lie close and parallel to the tube 2 so that the carrier may be wheeled along in this position by an additional handle which may be provided. The handle 32 has a rotatable grip 33 and may be adjusted in any position by means of a spring clamp to vary the wheel track. The base plate 3 has a pin and slot connection with the foot 3d so that it may be rotated 180 degrees from a stowed position between the wheels to a bag supporting position.
Patent GB-886964-A (GB)
Title: Improvements in or relating to steroids and the manufacture thereof
IPC: C07J75/00
Filed: 1958-11-25
Abstract: The invention comprises a 5,6-oxido-17a -hydroxypregnane-3,20-dione 17-acylate 3-alkylene ketal wherein the acyl group is of a hydrocarbon carboxylic acid containing 1-12 carbon atoms and wherein the alkylene radical contains not more than 8 carbon atoms, and the attaching oxygen to carbon bonds are separated by a chain of at least 2 and not more than 3 carbon atoms, the corresponding 19-nonpregnane compounds, a compound of the formula <FORM:0886964/IV (b)/1> wherein R11 is hydrogen and Ac is the acyl group defined above, a compound of the formula <FORM:0886964/IV (b)/2> wherein R is the alkylene radical defined above and Ac is the acyl radical defined above and processes for the preparation thereof by treating a 17a -hydroxyprogesterone I with an anhydride or halide of an organic carboxylic acid to obtain the corresponding enol acylate of 17a -hydroxyprogesterone 17-acylate which is hydrolysed to give 17a -hydroxyprogesterone-17-acylate II, treating II with an alkane diol to obtain 17a -hydroxyprogesterone 17a -acylate 3-alkylene ketal III, and treating III with a peracid to obtain 5a ,6a -oxido-17a -hydroxy-pregnane-3,20-dione 17-acylate, 3-alkylene ketal IV.  The 19-norpregnane compounds are similarly converted.  Examples describe the preparations of 5a ,6a -oxido-17-hydroxypregnane-3,20-dione 17-acetate, 5a ,6a -oxido - 17a - hydroxy - 19 - norpregnane - 3, 20 - dione 17-acetate 3-ethylene ketal.  Specification 848,881 also is referred to.