1
Method of and means for detecting water vapour. Leonard Angelo Levy, Donald Willoughby West, Robert Henry Davis, March 23, 1931: GB345672-A (7 worldwide citation)

An appliance for drying respirable gases for subsequent removal therefrom of noxious compounds is characterized by having disposed in the path of the entrant air, a moisture-absorbent mass, a chemical which undergoes a colour change on contact with water, and an agent for removing the noxious compou ...


2
Improvements in or relating to breathing apparatus. Robert Henry Davis, May 15, 1936: GB447334-A (5 worldwide citation)

447,334. Breathing-apparatus. DAVIS, SIR R.. H., 187, Westminster Bridge Road, London. Nov. 15, 1934, No. 32905. [Class 81 (ii)] In breathing-apparatus comprising a bag 1 having a canister 5 and oxygen cylinder 2 connected thereto, and particularly of the kind wherein breathing to and from the bag t ...


3
Improvements in or relating to ear protectors. Robert Henry Davis, William Rodney Luxton, November 14, 1935: GB438283-A (5 worldwide citation)

438,283. Moulds for ear protectors. DAVIS, SIR R. H., 187, Westminster Bridge Road, and LUXTON, W. R., 3, Highcroft Road, Crouch Hill, both in London. July 14, 1934, No. 20693. [Class 87 (ii)] [See also Group VI] A mould for casting conical wax bases of ear protectors comprises separable halves 1, 2 ...


4
Improvements in or relating to self-contained breathing apparatus. Robert Henry Davis, May 7, 1936: GB447119-A (4 worldwide citation)

447,119. Self - contained breathing- apparatus. DAVIS, SIR R. H., 187, Westminster Bridge Road, London. Nov. 7, 1934, No. 32031. [Class 81 (ii)] In self - contained breathing - apparatus in which air is exhaled from a mouthpiece 2, through a tube 4 and a canister 6 containing carbon dioxide absorben ...


5
Improvements in or relating to breathing apparatus. Robert Henry Davis, December 22, 1936: GB458538-A (4 worldwide citation)

458,538. Respiratory appliances. DAVIS, SIR R. H., 187, Westminster Bridge Road, London. Jan. 31, 1936, No. 3046. [Class 81 (ii)] In breathing - apparatus comprising a rubber or rubberized fabric bag divided by a central partition into inhaling and exhaling compartments connected with the facepiece, ...


6
Improvements in or relating to self-contained breathing apparatus. Robert Henry Davis, Siebe Gorman & Company, June 27, 1956: GB751033-A (4 worldwide citation)

751,033. Respiratory appliances. DAVIS, Sir R. H., and SIEBE, GORMAN & CO., Ltd. March 17, 1954, No. 7814/54. Class 81(2). In self-contained breathing apparatus which includes an oxygen cylinder a cooling device is provided which fits on the outside of the cylinder. The device may take the form of a ...


7
Improvements in breathing apparatus. Cecil Rosling, Robert Henry Davis, September 2, 1920: GB150232-A (4 worldwide citation)

150,232. Rosling, C., and Davis, R. H. Feb. 10, 1920. Respirators.-A face-piece or mask, for us in vitiated atmospheres, comprises an outer flexible skin a of impermeable material shaped to fit over the nose, mouth, and chin of the wearer without impeding his vision, and an inner layer or pad b of f ...


8
Improvements in diving apparatus. Robert Henry Davis, August 2, 1928: GB294749-A (3 worldwide citation)

294,749. Davis, R. H. June 21, 1927. Diving-chambers; divers' dress.-A diver's chamber consists of a closed vessel a, Fig. 3 with a door, or two juxtaposed doors, through which the diver enters. It is then lowered to the sea bottom, air being supplied by a pipe c. If then the diver desires to leave ...


9
Improvements relating to breathing apparatus. Siebe Gorman & Company, Robert Henry Davis, Robert William Gorman Davis, July 8, 1947: GB590096-A (3 worldwide citation)

590,096. Respiratory appliances. SIEBE, GORMAN, & CO., Ltd., DAVIS, Sir R. H., and DAVIS, R. W. G. April 11, 1945, No. 9043. [Class 81 (ii)] In breathing apparatus of the type comprising a face mask or helmet which is supplied in accordance with the requirements of the wearer with respirable gas, e. ...


10
Improvements in or relating to safety belts for men working on scaffolding, sides ofbuildings and like situations. Charles Fenna, Robert Henry Davis, June 23, 1932: GB375210-A (3 worldwide citation)

375,210. Safety belts ; runners for anchored vertical ropes. FENNA, C., 107, Central Avenue, Billingham, Co. Durham, and DAVIS, R. H., 187, Westminster Bridge Road, London. Dec. 18, 1931, No. 35144. [Class 141.] A safety device for workmen on scaffolding &c. comprises a suspension rope anchored at t ...