. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. UNIVERSAL POCKET LEVEL. The under side of the glass is ground andpoHshed spherically, concave of long radius,and set in a case of steel, with spirits or glycerized water, ex-cept the bubble space. 843. ADJUSTABLE BEAM CLAMP. For suspending ironpip
. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. UNIVERSAL POCKET LEVEL. The under side of the glass is ground andpoHshed spherically, concave of long radius,and set in a case of steel, with spirits or glycerized water, ex-cept the bubble space. 843. ADJUSTABLE BEAM CLAMP. For suspending ironpipes from fireproof ceilings. The sleeve when turned into a quarter turn allows the clamp to be adjusted,and is then locked by turning it backto its original position, the teeth on thehooks engaging in corresponding slotson inside of sleeve. The hooks aresharpened where they extend over theflange of the beam so they can bedriven under the brick. 844. GRAVITY ELEVATOR. A simple arrangement for lowering build-ing material in taking down high build-ings. When the upper story is clearedthe wheel is set on the next floor belowand so on. The brake controls the dif-ference in weight between the empty andloaded barrow. This method of lowering the materialin taking down the old buildings, avoidsthe dust nuisance made by discharging.
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Keywords: ., bookauthorhiscoxga, bookcentury1900, bookdecade1910, bookyear1910
