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1. 发明专利

GB2603287A A wireless audio device, system and method 未知
公开(公告)号：GB2603287A
公开(公告)日：2022-08-03
申请号：GB202117996
申请日：2021-12-13
申请人： JOHN CRAWFORD
发明人： JOHN CRAWFORD
IPC分类号： H04W4/80 , H04N5/60 , H04W4/18
摘要： A transmitter device comprises a HDMI (RTM) connector to allow connection to an audio or audio/visual device. The transmitter device receives a HDMI digital data stream from the audio or audio/visual device and from this obtains a digital audio stream. The transmitter is configured to wirelessly transmit the digital audio stream as Wi-Fi (RTM) packets and/or wireless internet data to a receiver device (e.g. loudspeakers or headphones) for output of sound to a user. A Bluetooth connection may also be established between the transmitter device, the receiver device and/or at least one further device. The arrangement allows for physical cables to be replaced with a wireless interface. By separating out the digital audio stream and only transmitting this wirelessly, the amount of data being sent is reduced and therefore less signal bandwidth is required.

2. 发明专利

GB425118A Improvements relating to sliding clasp fasteners 未知
公开(公告)号：GB425118A
公开(公告)日：1935-03-05
申请号：GB2459933
申请日：1933-09-05
申请人： CHARLES JOHN CRAWFORD , THOMAS BATEMAN POWELL
IPC分类号： A44B19/26
摘要： 425,118. Sliding -clasp fastenings. CRAWFORD, K. M., (Representative of CRAWFORD, C. J.), 88, Jamaica Road, Bermondsey, London, and POWELL, T. B., Winterholm, Weston Green Road, Thames Ditton, Surrey. Sept. 5, 1933, No. 24599. [Class 44] For a sliding-clasp fastener of the kind in which the elements are interlocked by rotating about axes parallel to the stringers, the slider has guide channels in its rear plate to accommodate ribs on the stringers and has front retaining members adapted to lie flat against the front faces of the stringers, but leaving a longitudinal medial opening to allow for the rocking movement of the elements during the interlocking action. Figs. 6 and 2 show the slider in longitudinal and transverse section and Fig. 3 is a sectional plan showing the front retaining members 7, 8 with the space 11 therebetween to allow the twisting of the elements during their engagement and with the shaped ends 29 to press down on the necks of the elements to complete the engagement. The stringers are guided by the members 7, 8 which lie substantially flat on the top thereof and by the ribs on the underside of the stringers entering the grooves 2, 3 on the rear plate 1. The retaining members 7, 8 are each formed with a cam edge 10 to depress the elements before they reach the lifting cam 9 on the rear plate 1. The pull tab is arranged to act as near to the plane of engagement as possible by being of fork form with the lugs retained in slots 14 provided by arms 15 slightly spaced above the retaining members 7, 8. The slider is made from a blank of the shape shown in Fig. 7 by bending the front retaining members 7, 8 to lie beneath the arms 15, bending up the rear plate 1 and securing the parts by a rivet 20 and spacing thimble 22. The front retaining members 7, 8 are joined by a bridge 21 and an arched bridge 18 spaces the arms 15. The entrances to the wide end of the slider are formed with guide grooves by notching and bending up the blank as indicated at 23, Fig. 7, to provide the inside walls of the grooves while bent-up edges 25 of a separate piece 24, Fig. 5, form the outer walls of the grooves. A spring tongue 16 as described in Specification 425,840 may be fitted to the slider. Specification 333,267, [Class 44], also is referred to.

3. 发明专利

GB348681A An apparatus for locking the gear lever of a motor car to prevent theft or unauthorized removal when left unattended 未知
公开(公告)号：GB348681A
公开(公告)日：1931-05-12
申请号：GB470630
申请日：1930-02-12
申请人： JOHN CRAWFORD , WILLIAM CRAWFORD JR
IPC分类号： B60R25/00
摘要： 348,681. Lockable gear control levers. CRAWFORD, J. and CRAWFORD, W., 69H, Mabel Street, Motherwell, Lanarkshire. Feb. 12, 1930, No. 4706. [Class 79 (iii).] Apparatus for locking the gear control lever of a motor vehicle is carried by a plate or part secured under the gear box cover so that it cannot be detached without removing the cover, in which case the lever will be removed also, leaving the gear box out of control. A plate A, secured between the gear box C and its cover D in which the control lever B is pivotally mounted, is formed with ears or lugs E to which are pivoted, by means of rivets &c. L, extensions G of an elongated boxlike member F surrounding the control lever. In normal use, the lever moves longitudinally in the box and rocks the box about the pivots L when moved laterally, play being provided for this purpose. In order to lock the lever against longitundial movement, a U-shaped member J is passed through holes H in the box and padlocked in position, thereby retaining the lever in neutral; or the lever may be retained in either end, gear engaged, position by means of a single bar on one side thereof padlocked in position. The box may be replaced by a pair of separate or connected sideplates similarly hinged to the ears E and apertured to receive the locking member.

4. 发明专利

GB261976A A new or improved process for treating blast furnace slag and the like 未知
公开(公告)号：GB261976A
公开(公告)日：1926-12-02
申请号：GB824426
申请日：1926-03-26
申请人： ANDREW CRAWFORD , JOHN CRAWFORD
IPC分类号： C04B5/00
摘要： 261,976. Crawford, A., and Crawford, J. March 26, 1926. Slags, treatment of.-A small quantity of acid steel slag is added to blast furnace slag, preferably white molten. to reduce the tendency of the latter to disintegrate.

5. 发明专利

GB191219965A Improvements in or relating to Doorclosers or Doorclosers and Doorchecks. 未知
公开(公告)号：GB191219965A
公开(公告)日：1913-09-02
申请号：GB191219965D
申请日：1912-09-02
申请人： MOORE JOHN CRAWFORD
发明人： MOORE JOHN CRAWFORD
IPC分类号： E05F3/04
摘要： 19,965. Moore, J. C. Sept. 2. Dash-pots.-Relates to door closing and checking apparatus, and consists in controlling the checking-liquid by means of a stationary tube v passing through the check piston g, the tube being provided with ports y, y and a ball valve w . When the piston rises, the liquid passes freely through the ports y and past the valve w and ports y to the lower side of the piston, and during the return stroke, the valve w closes and the liquid returns slowly past a flattened portion of the outer surface of the tube.

6. 发明专利

GB191219964A Improvements in or relating to the Outer Coverings on Pneumatic Tyres on Wheels. 未知
公开(公告)号：GB191219964A
公开(公告)日：1913-04-24
申请号：GB191219964D
申请日：1912-09-02
申请人： MOORE JOHN CRAWFORD
发明人： MOORE JOHN CRAWFORD
IPC分类号： B60C27/00
摘要： 19,964. Moore, J. C. Sept. 2. Tread projections.- The sides of pneumatic tyres are provided with radial ribs c having rectangular ends, the outer of which bear on the road when the tyre is compressed by the load on the wheel, while the inner ends bear on the edges of the rim.

7. 发明专利

GB190825091A Machinery for Affixing Paper or other Bands to Articles. 未知
公开(公告)号：GB190825091A
公开(公告)日：1909-11-11
申请号：GB190825091D
申请日：1908-11-21
申请人： COATS LTD J & P , JOHN CRAWFORD MACALESTER
摘要： 25,091. Coats, J. & P., and Macalester, J. C. Nov. 21. Feeding sheets.-Relates to a machine for affix ing paper or like bands to balls of yarn, thread, &c. The balls are fed on a band to a position opposite the band or sheet feeding device which comprises an oscillating suction box 1, Fig. 1, connected to an air-pump, and co-operating with the band receptacle 4 which is oscillated by cams 6, 7. The suction box deposits the sheet in a guide comprising plates 20, 26, Fig. 10. The plate 20 has .pins 24 adapted to enter notches in the suction box and is normally spring-held towards the ball. The plate 26 is formed with a ledge 27 and is spring-held away from the ball. The band falls on to the ledge 27, the pins 24 separate it from the suction box, and the projection 32 on the plate 20 carries the plate 26 towards the ball. A beater plate 48 pivotally carried at 49 on the plate 26 is raised by a toggle 50 on the return movement, but, when the guide is moving towards the ball, it falls and straightens the band X. Spring blades 77, Fig. 27, mounted on a socket nip the ball Y and with it the end x of the band X. The shaft carrying the arms is rotated by a rack-andpinion mechanism to carry the ball round and thus enclose it in the band.

8. 发明专利

GB190619681A Improvements in Hand Lever Brakes for Railway Wagons and other Vehicles with Four or more Wheels. 未知
公开(公告)号：GB190619681A
公开(公告)日：1907-08-29
申请号：GB190619681D
申请日：1906-09-04
申请人： MOORE JOHN CRAWFORD
发明人： MOORE JOHN CRAWFORD
摘要： 19,681. Moore, J. C. Sept. 4. Brakes.-A railway-wagon brake is applied by toggles o connected by a link n to a block d, sliding vertically in guides c and actuated by a pinion j and rack l, the pinion together with a hand-lever h being mounted to rotate in a bearing in the block d. The brake is held on by the engagement of a headed stud or clip r on the lever h with a swinging rack v, and is held off by the engagement of the same stud with a hook s on the top of the rack. The apparatus is duplicated on the other side of the wagon, the pinions j and the swinging racks v on the two sides being connected by transverse shafts so that the brakes can be applied or released from either side. To adapt the brake for actuation from diagonally opposite corners of the wagon, the lever on one side is made to actuate the pinion through an additional pinion, and the swinging racks are connected by suitable coupling-bars.

9. 发明专利

GB190203596A Improvements in or relating to Windows 未知
公开(公告)号：GB190203596A
公开(公告)日：1903-02-12
申请号：GB190203596D
申请日：1902-02-12
申请人： MOORE JOHN CRAWFORD
发明人： MOORE JOHN CRAWFORD
摘要： 3596. Moore, J. C. Feb. 12. Windows.-In order to avoid the cutting away of the fixed frame of sashes arranged to turn inwards, as described in Specification No. 20,993, A.D. 1900, the lower portions a , b of the parting and inside beads a, b, are fixed to a metal plate d, which is arranged to slide horizontally between studs or screws f driven into the pulley stile. The plate is secured in place by a turn-button g, a spring or other bolt, or otherwise, and projections e of the plate prevent the entire withdrawal of the plate from the frame. The ends of the inside bead are halved or formed with a lap-joint h.

10. 发明专利

GB190101920A Improvements in or relating to Casement Windows 未知
公开(公告)号：GB190101920A
公开(公告)日：1901-11-30
申请号：GB190101920D
申请日：1901-01-28
申请人： MOORE JOHN CRAWFORD
发明人： MOORE JOHN CRAWFORD
摘要： 1920. Moore, J. C. Jan. 28. Casements. - To facilitate cleaning and repairs, the casement c is pivoted to tapered links or flaps a , b hinged to the frame c , and pivots or studs e,f of the casement are arranged to slide in curved guide-slots g, h in the frame. When it is desired to open the casement on the hinges a, b in the ordinary manner, the movement of the studs in the slots is prevented by an oval crank plate i, which is operated by a handle, and bears against a fixed pivot-pin in line with the hingepins a, b.

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