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Patent granted to George Sayner and John Greenwood, for improved sawing machinery
l)aleld,/br Sawin+, 21Iachinerg.
o59
At Fig. 1, u a, are the two poles, having joints at b b, fi'om whence proceeds a strong iron band wlfich, clasps tlF opposite ends ot" the beam e, which, underneath, diverges l!lto tw(! Iron straps that are bolted to the sides of the vessel. This will be clearly understood by an examination of Fig. 4, winch gwes a perspective s}de view of fl;e iron work which connects tile poles to the vessel, with a portiol~ of the beam, antl a pole; c e is the beam, with the iron band bolted to it.: ~and showinz the stra)s d d that are secured to the sides of the vessel, and are turned tor that purpose tlat ways to~,var(!s them. "I'he poles are connected together at e by a stout n'on oand, by scarfin~ and crossin~ each other, as shown by the separate Fig. 2 in perspe(tire: f is thee top, where the upper ends ot the poles are strongly secured to one another by straps and bolts: g is the lower end of file topmast which passes through a hole adapted to it in the top, with its heel resting upon an iron projection, which is of one piece with the ba~ld e. For sloops, and fore and aft rigged vessels generally, the poles a a terminate at their junction, and are united by scarli]ag, previous to putting on the strong iron band. The mode of scarting, the patentee leaves to the genius of the mast-maker, but at the same time points out one mode which be most approves of, and which, perhaps, cannot be excelled: this mode is shown by the perspective Fig. ,5. Connected to the band which unites the poles together, are tixed long iron liliks., i i, for hookilJg on, or " seizing", tile shrouds to. Those of (mr readers who may desire further information, may consult the ll,epertory ot Iatent lnventmns, lot Nove,nber last. a
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Patent granted to George Saffner and John Greenwood~for hnproved Sawing 3Iachine~ff. The iml)rovements ia Saw-mills projected under tills patent, relate to three distinct particulars; each of thcni presumed to be an improved application of the citcular saw. The first, and dm most hnporiant, consists in tile emplo.yment ,ff two circular saws, i stead of one, to cut through a piece ot timber. According to the usual method, in sawing through a log of t~vo feet in thickness, a circular saw of abouf; five feet in d{amet~rr is required, as the cut cannot extcml to the fldl semi-diameter of the saw, on account of its axis aml the strengthening tlanch; but by lhe new arrangement of tilt patentees, the operation is accomplisl~ed by two saws, each of little more than half the diameter of tile fiwmer; they are placed therefi)re on opposite sides of the timber, where each of them makes an incisim~ rather more than half wty through; tile log is thus divided completely, etthcting at the s;ll|lt? i.il|te a "¢Cl'yconsiderable saving in expense o1" power, aml in the c.si, of ~aws. Tim annexed diagram will, we h'ust, lie li,md sullicient to explain the mattel'~ clear1),: a tile bed of the saw-mill: b b tile log of timber
'260
Patent for Sawing 311achinery.
under operation: c c the two circular saws, the depths of their respective cuts being shown by two fine lines; these saws have pulleys upon their axes, and are driven by bands which embrace them, and the drum wheel d, motion being g~ven to the latter by a water wheel, steam engine, or other power.
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The timber rests, and moves, upon horizontal rollers e e, and is guided accurately to the saws by vertical rollers, (not shown in the engraving), as usual !n saw.mills. The axes of the saws running in
are placed together on the axes of c c, with flanehes between them of the thickness of the intended planks, and bolted together; by these means- the whole Ioo, is. at one oneration, formed into boards~ and if it be required to cut the log into scanthng, or laths, a seraes oi horizontal saws 1 placed, in like manner, upon a vertical axis m, and driven by the pulley n, cuts the whole at once into those small di.dsions. This mode of applying the saws to work iu a horizontal plane, so as to operate simultaneously with those acting in a vertical direction, is the secondparticular improvement alluded to at tile commencement of this article. The third improvement claimed, is for uniting the plates of l series of saws closely together, so as to make one compact body of saws, without an), interstices between them, for the purpose of reducing dye.woods entirely to saw dust, or powder, instead of the usual method of chipping or rasping them for the purposes of dying, or other chemical operations.
[lb.
o59
At Fig. 1, u a, are the two poles, having joints at b b, fi'om whence proceeds a strong iron band wlfich, clasps tlF opposite ends ot" the beam e, which, underneath, diverges l!lto tw(! Iron straps that are bolted to the sides of the vessel. This will be clearly understood by an examination of Fig. 4, winch gwes a perspective s}de view of fl;e iron work which connects tile poles to the vessel, with a portiol~ of the beam, antl a pole; c e is the beam, with the iron band bolted to it.: ~and showinz the stra)s d d that are secured to the sides of the vessel, and are turned tor that purpose tlat ways to~,var(!s them. "I'he poles are connected together at e by a stout n'on oand, by scarfin~ and crossin~ each other, as shown by the separate Fig. 2 in perspe(tire: f is thee top, where the upper ends ot the poles are strongly secured to one another by straps and bolts: g is the lower end of file topmast which passes through a hole adapted to it in the top, with its heel resting upon an iron projection, which is of one piece with the ba~ld e. For sloops, and fore and aft rigged vessels generally, the poles a a terminate at their junction, and are united by scarli]ag, previous to putting on the strong iron band. The mode of scarting, the patentee leaves to the genius of the mast-maker, but at the same time points out one mode which be most approves of, and which, perhaps, cannot be excelled: this mode is shown by the perspective Fig. ,5. Connected to the band which unites the poles together, are tixed long iron liliks., i i, for hookilJg on, or " seizing", tile shrouds to. Those of (mr readers who may desire further information, may consult the ll,epertory ot Iatent lnventmns, lot Nove,nber last. a
,
|
Patent granted to George Saffner and John Greenwood~for hnproved Sawing 3Iachine~ff. The iml)rovements ia Saw-mills projected under tills patent, relate to three distinct particulars; each of thcni presumed to be an improved application of the citcular saw. The first, and dm most hnporiant, consists in tile emplo.yment ,ff two circular saws, i stead of one, to cut through a piece ot timber. According to the usual method, in sawing through a log of t~vo feet in thickness, a circular saw of abouf; five feet in d{amet~rr is required, as the cut cannot extcml to the fldl semi-diameter of the saw, on account of its axis aml the strengthening tlanch; but by lhe new arrangement of tilt patentees, the operation is accomplisl~ed by two saws, each of little more than half the diameter of tile fiwmer; they are placed therefi)re on opposite sides of the timber, where each of them makes an incisim~ rather more than half wty through; tile log is thus divided completely, etthcting at the s;ll|lt? i.il|te a "¢Cl'yconsiderable saving in expense o1" power, aml in the c.si, of ~aws. Tim annexed diagram will, we h'ust, lie li,md sullicient to explain the mattel'~ clear1),: a tile bed of the saw-mill: b b tile log of timber
'260
Patent for Sawing 311achinery.
under operation: c c the two circular saws, the depths of their respective cuts being shown by two fine lines; these saws have pulleys upon their axes, and are driven by bands which embrace them, and the drum wheel d, motion being g~ven to the latter by a water wheel, steam engine, or other power.
ffl,
({ c--fl
H...... ,.a
".,
/
The timber rests, and moves, upon horizontal rollers e e, and is guided accurately to the saws by vertical rollers, (not shown in the engraving), as usual !n saw.mills. The axes of the saws running in
are placed together on the axes of c c, with flanehes between them of the thickness of the intended planks, and bolted together; by these means- the whole Ioo, is. at one oneration, formed into boards~ and if it be required to cut the log into scanthng, or laths, a seraes oi horizontal saws 1 placed, in like manner, upon a vertical axis m, and driven by the pulley n, cuts the whole at once into those small di.dsions. This mode of applying the saws to work iu a horizontal plane, so as to operate simultaneously with those acting in a vertical direction, is the secondparticular improvement alluded to at tile commencement of this article. The third improvement claimed, is for uniting the plates of l series of saws closely together, so as to make one compact body of saws, without an), interstices between them, for the purpose of reducing dye.woods entirely to saw dust, or powder, instead of the usual method of chipping or rasping them for the purposes of dying, or other chemical operations.
[lb.