SU20302A1 - Modification described in US Pat. No. 15516 saws - Google Patents

Description

Patent No. 15516 describes a chain saw device composed of three groups of parallel cutting blades; of these, two groups, the outer ones forming a pair chain, are assigned to conventional cuts, and the middle, shorter and moving parts between the first two in the opposite direction serve to remove material between these cuts. All three chains go around the gears, one of which, leading, receives movement from the engine using a flexible shaft.

The proposed modification of this saw is to change the length of the chains and the design of the links of the first two groups of saw blades and to add fans to remove sawdust.

In FIG. 1 shows the top view of the saw; FIG. 2 is a vertical longitudinal section of it; FIG. 3-cross-section of the external saw blade; FIG. 4 perspective view of this link.

The link 11 of both side outer saw blades of the main type of saw, located against each other, in the proposed modification are connected in pairs by cross-pieces 31 (Fig. 2 and 3) into one whole link, shown in FIG. 4. These links, pivotally interconnected by the ears 18, form

saw chain, enveloping chain pulleys 15 and 17 and driven by them. The same pulleys 13 and D6 of the longer inner saw chain 12 are placed at the ends of the frame 26, further against the first pulleys 15 and 17. When the chain is moving, the links 11 are guided by their bases (crossbar 31) / chute 32 in the frame 26 and along the pulleys 15 and 17 corresponding profiles.

In order to blow out sawdust from the links and saw teeth in the proposed modification: fans 36 and 3b (Fig. 2), mounted on axes 35 and 35, are used. receiving their rotation from the axes of the chain pulleys 13 and 16, the first by means of gears 33, 34, and the second through gear 34. The fans are located in the boxes 38 and direct the air to the saws through the hoppers 37. For ease of blowing in links x saw 11 holes 40 are arranged (Fig. 4).,

The subject of the patent.

1. A modification of the chain saw described in Patent No. 15516, characterized in that the side saw links 11 arranged against each other (Fig. 1 and 2) are linked in pairs by U (Fig. 3, 4), directed at

§ Movement with gutters 32 in frame 26.. In the saw described in paragraph 1; Shuttle to remove the fan vent f

.

 I.- l V / lyf. .

l tors 36 and 36, the axles 35 and 35 of which receive rotation from the axes of the chain pulleys 13 and 16, respectively, through the gears 33, 34 and 16, 34.

Fig1