Disclosed is laminate flooring and other articles with tongues and grooves for joining sections of the flooring or articles and a method of making the tongue and groove joints. The lower surfaces of the tongues and grooves are indexing surfaces for aligning the wear surfaces of the flooring ...
Tongue and groove boards are provided with integral spacers that permit expansion of the assembled boards without buckling, by milling on the bottom of the groove a central longitudinally extending rib of triangular cross section. Spaced portions of the rib, of total length that is most of the ...
Core Vibration Tongue and Groove Type Reinforced Concrete Drainage Pipe Making Machinery Technical Parameter Working Principle: The vertical core vibration machine is through the vibration core high frequency vibration for producing reinforced concrete drainage ...
A particleboard web member interconnects a pair of wood chord members by means of glued tongue and groove joints to form an I-beam or roof truss. A pair of grooves in each chord member receives a pair of parallel tongues on the web memb... JR Keller,WA Nickerson - US 被引量: 63发表...
No. 3,536,368 to Eklund and Campbell, and in U.S. Pat. No. 3,772,750 to Hauser, two hemispherical shells having mating tongue-and-groove arrangements are joined and welded or brazed together. U.S. Pat. No. 3.599,307 to Campbell and Johnson, the two hemispheres are “swaged” ...
If the groove at the apex of the frog is very shallow in reference to the adjacent sole and hoof wall, but the collateral groove at the back of the foot is deeper than what is natural, we can safely assume we have the bone position in the capsule we are discussing here. (If in ...
For example, the graphite or graphite-like bodies can be provided with dovetail mortise-and-tenon, dado, lapped, tongue-and-groove, pin-and-hole or like Joints utilizing simple machining techniques and tools since graphite and graphite-like materials are comparatively soft and easily shaped. Other...
In use the workpiece (20) is clamped below the plane of the surface (18) and the guide and stop means are adjusted to define boundaries so that by moving a router on the surface with its cutting bit extending through the aperture and its peripheral rim in contact with the guides, its ...
METHOD AND MEANS OF MAKING TONGUE AND GROOVE JOINTSGROENEWALD PGROENEWALD JVAN DER MERWE CILLIERS P
一种汽车实木复压榫槽拼接脚垫的制作方法 An automobile re-pressed wood tongue and groove splicing method of making mats本发明公开了一种汽车实木复压榫槽拼接脚垫的制作方法,由制作构件,粘接构件,开型,封边步骤构成,其中构件由木塑板,泡沫板,多个实木板块,皮革组成,构件形状根据车型地坪大小裁剪而定;每个实木板块...