Volume 20 (1870) (454 pages)

oe a, a ta Ss BY DEWEY & Co., Patent Solicitors, San Francisco, Saturday, April 16, 1870. VOLUME XX. Number 16. Improved Band Sawing Machine. Among the sawing machines presented to the pnhlic there are many defective ones, ® number which are very fair, and several very good ones, Among those which appear to have good claims to be inelnded in the last class is the one which we illustrate to-day. It is the result of years of effort, and has several noticeable peculiarities, which are claimed to obviate many drawbacks of other machines, An experience of fifteen years in the use of these saws in Enrope has demonstrated to the satisfaction of the manufacturers that no other than a heavy and substantial machine can operate successfully. There is so much elasticity in the frame between the shafts where the framing is light that an nndue strain is necessary on the saw, causing it to break. Some of the distingnishing features in this machine may be enumerated as follows: The frame is very heavy and most suhstantial in all its parts, being made wholly of iron and steel, so as to avoid all vibration or trembling when in operation. The lower or driving shaft is adjustable in all directions. A want of this adjnstment . in ordinary band saws has led to the adoption of flanges on the wheels, to keep the eaws in place. Such flanges have proved one of the most frequent causes of broken saws. The top wheel is adjustable independent of the guides, and has a range of 12 inches in its movement. The strain upon the saw is made consiant by means of weighted levers, and is not affected by the adjusting screw, The new frictionless guides consist of a combination of rollers for the hack and adjustahle lateral guides for the sides of the saws. These guides ure formed of hardened steel-plates, about 316ths inch thick, and are placed just helow the tahle, and from their nature are very durable. While the friction common to fixed gnides is avoided, these steel gnide-plates can be so adjusted as to clip the sides of the saw as tightly or as loosely as may be desired, and, when adjusted, are secured in their position by screws passing through slots formed in them. In these guides the thrust of the saw due to the work being forced against it, is received by the steel roller on the back, and gives rise to roller friction only, so that the back of the saw is not heated, and there is no huckling cansed by uneqnal expansion of the two edges of the saw-blades. This arrangement, it is claimed, renders the machine particularly desirable for cntting thick timber. A machine with these improvements, it is stated, has been operated constantly fur two mouths, reducing the single saw used one-half by wear without any apparent tendency to fracture, and with much less power than with fixed guides, which amounts in some cases to a resistance equal to the sawing. Indeed, it claimed that there is no reason why a saw fitted in this manner may not be woru out without breaking, if properly taken care of. Provision igs furthermore made for maiutaining an even tension on the sawblade by means of weighted levers, which are not affected hy the adjusting screw, which is also indispensahle. This saw is coming largely into nse in the East, and the great facility, ease of operating, and very large amount of work which can he done on it, makes it a valuable machiue in any planing mill or woodworking shop. It is furnished with English, French or American saw-blades. The machine was patented in June, 1868, by J. A. Fay & Co., of Cincinnati, Ohio, by whom it is manufactnred. It may he seen at the machine warerooms of Berry & Place, 112 and 114 California street, in this eity, who are the mannfacturers’ agents, and who will doubtless he pleased to give any further information in regard to it, The University. It is to be hoped that our State University will he able now to flonrish without the impediment of dire want of necessary funds, which is usually such a drag on similar institutions. Besides the appropriDickinson’s Patent Adjustable Tool for Holding Carbon Points. Tn the scale of hardness for minerals, the diamond stands the highest, and is, therefore, ahle to cut all others. This quality has long led to its more or less extended ations made in previous years, Use in the arts; but a serious drawback to for its maintenance, the late. its general application has been its cost. Legislature has provided for. The black diamond, however, being valueits receiving fifty thousand dol-. less as a gem, is comparatively cheap, and lars annually for current ex-. being just as useful for the arts, is coming penses, and for the construction largely into use, and is now employed in of the huildings at Berkeley available resources can bedrawn on to the amount of over $150,000. There is to he no charge for tuition,asd, moreover, there is provision made for five competitive scholarships of $300 each per annum, to last during the four years of the course. The drawings, etc., for the University buildings are all completed, and it is expected that the buildings themselves will be ready hefore a great length of time has elapsed. and we hope will ever continne prosperous. Figt B Tig.2 The institution seems now tobe . very many ways for cutting and dressing a getting finely under headway, . great variety of articles. The firm of Dickinson has long been engaged in preparing diamonds for such pnrposes, the husiness descending from father to son, we are informed. We give an illustration of a tool patented by the present head of the house, for securely holding the diamond in a proper position. Fig. 1 shows the holder, Figs. 2and 3 heing merely the two ends of the same in such a position as to show more clearly the cavities for holding the diamond. The other figures show some of the carbon points, as they are called in preferencc, which are quite commonly used. No.1 is a prismatic point for turning grindstoues, emery wheels, etc. No. 2 has an acute point for truing calender paper rollers, ete. No, 3is used for cutting or sawing stone, for faciug or edging ring or cylinder drills and circular saws. No. 4 is for drilling stone, glass, etc. These points and tools are coming rapidly into use, and growing in favor among machinists and others In this connection we may . in all parts of the country. Any informaspeak of the very interesting course of lec-. tion with regard to them may be ohtained tures which have been delivered at Oak-. hy applying to John Dickinson, 64 Nassau land this winter hy the professors of the . street, New York, University. These, although most instructive and entertaining, have been but sparely a oe A Brrp Story.—An Eastern paper says attended, ‘The last one was by Professor . that among the Sandwich Mountains in Fisher, on the “ History and Properties of . New Hampshire there is a deep glen, Gunpowder,” and was illustrated hy some ‘thickly covered with evergreens, on the very beautiful experiments. If Oakland tops of which trees the snow lodges, shutpeople would attend the lectures once, ting out the cold winds as well as the light. they would see what they now miss by their absence. The Board of Regents are to hold a speThis secluded spot has heen found to be the winter residence of thousands of New England robins, who prefer somewhat recial meeting on June 3d for the election of stricted quarters at home to southern mia President for the University, eration,

oe a, a ta Ss BY DEWEY & Co., Patent Solicitors, San Francisco, Saturday, April 16, 1870. VOLUME XX. Number 16. Improved Band Sawing Machine. Among the sawing machines presented to the pnhlic there are many defective ones, ® number which are very fair, and several very good ones, Among those which appear to have good claims to be inelnded in the last class is the one which we illustrate to-day. It is the result of years of effort, and has several noticeable peculiarities, which are claimed to obviate many drawbacks of other machines, An experience of fifteen years in the use of these saws in Enrope has demonstrated to the satisfaction of the manufacturers that no other than a heavy and substantial machine can operate successfully. There is so much elasticity in the frame between the shafts where the framing is light that an nndue strain is necessary on the saw, causing it to break. Some of the distingnishing features in this machine may be enumerated as follows: The frame is very heavy and most suhstantial in all its parts, being made wholly of iron and steel, so as to avoid all vibration or trembling when in operation. The lower or driving shaft is adjustable in all directions. A want of this adjnstment . in ordinary band saws has led to the adoption of flanges on the wheels, to keep the eaws in place. Such flanges have proved one of the most frequent causes of broken saws. The top wheel is adjustable independent of the guides, and has a range of 12 inches in its movement. The strain upon the saw is made consiant by means of weighted levers, and is not affected by the adjusting screw, The new frictionless guides consist of a combination of rollers for the hack and adjustahle lateral guides for the sides of the saws. These guides ure formed of hardened steel-plates, about 316ths inch thick, and are placed just helow the tahle, and from their nature are very durable. While the friction common to fixed gnides is avoided, these steel gnide-plates can be so adjusted as to clip the sides of the saw as tightly or as loosely as may be desired, and, when adjusted, are secured in their position by screws passing through slots formed in them. In these guides the thrust of the saw due to the work being forced against it, is received by the steel roller on the back, and gives rise to roller friction only, so that the back of the saw is not heated, and there is no huckling cansed by uneqnal expansion of the two edges of the saw-blades. This arrangement, it is claimed, renders the machine particularly desirable for cntting thick timber. A machine with these improvements, it is stated, has been operated constantly fur two mouths, reducing the single saw used one-half by wear without any apparent tendency to fracture, and with much less power than with fixed guides, which amounts in some cases to a resistance equal to the sawing. Indeed, it claimed that there is no reason why a saw fitted in this manner may not be woru out without breaking, if properly taken care of. Provision igs furthermore made for maiutaining an even tension on the sawblade by means of weighted levers, which are not affected hy the adjusting screw, which is also indispensahle. This saw is coming largely into nse in the East, and the great facility, ease of operating, and very large amount of work which can he done on it, makes it a valuable machiue in any planing mill or woodworking shop. It is furnished with English, French or American saw-blades. The machine was patented in June, 1868, by J. A. Fay & Co., of Cincinnati, Ohio, by

whom it is manufactnred. It may he seen at the machine warerooms of Berry & Place, 112 and 114 California street, in this eity, who are the mannfacturers’ agents, and who will doubtless he pleased to give any further information in regard to it, The University. It is to be hoped that our State University will he able now to flonrish without the impediment of dire want of necessary funds, which is usually such a drag on similar institutions. Besides the appropriDickinson’s Patent Adjustable Tool for Holding Carbon Points. Tn the scale of hardness for minerals, the diamond stands the highest, and is, therefore, ahle to cut all others. This quality has long led to its more or less extended ations made in previous years, Use in the arts; but a serious drawback to for its maintenance, the late. its general application has been its cost. Legislature has provided for. The black diamond, however, being valueits receiving fifty thousand dol-. less as a gem, is comparatively cheap, and lars annually for current ex-. being just as useful for the arts, is coming penses, and for the construction largely into use, and is now employed in of the huildings at Berkeley available resources can bedrawn on to the amount of over $150,000. There is to he no charge for tuition,asd, moreover, there is provision made for five competitive scholarships of $300 each per annum, to last during the four years of the course. The drawings, etc., for the University buildings are all completed, and it is expected that the buildings themselves will be ready hefore a great length of time has elapsed. and we hope will ever continne prosperous. Figt B Tig.2 The institution seems now tobe . very many ways for cutting and dressing a getting finely under headway, . great variety of articles. The firm of Dickinson has long been engaged in preparing diamonds for such pnrposes, the husiness descending from father to son, we are informed. We give an illustration of a tool patented by the present head of the house, for securely holding the diamond in a proper position. Fig. 1 shows the holder, Figs. 2and 3 heing merely the two ends of the same in such a position as to show more clearly the cavities for holding the diamond. The other figures show some of the carbon points, as they are called in preferencc, which are quite commonly used. No.1 is a prismatic point for turning grindstoues, emery wheels, etc. No. 2 has an acute point for truing calender paper rollers, ete. No, 3is used for cutting or sawing stone, for faciug or edging ring or cylinder drills and circular saws. No. 4 is for drilling stone, glass, etc. These points and tools are coming rapidly into use, and growing in favor among machinists and others In this connection we may . in all parts of the country. Any informaspeak of the very interesting course of lec-. tion with regard to them may be ohtained tures which have been delivered at Oak-. hy applying to John Dickinson, 64 Nassau land this winter hy the professors of the . street, New York, University. These, although most instructive and entertaining, have been but sparely a oe A Brrp Story.—An Eastern paper says attended, ‘The last one was by Professor . that among the Sandwich Mountains in Fisher, on the “ History and Properties of . New Hampshire there is a deep glen, Gunpowder,” and was illustrated hy some ‘thickly covered with evergreens, on the very beautiful experiments. If Oakland tops of which trees the snow lodges, shutpeople would attend the lectures once, ting out the cold winds as well as the light. they would see what they now miss by their absence. The Board of Regents are to hold a speThis secluded spot has heen found to be the winter residence of thousands of New England robins, who prefer somewhat recial meeting on June 3d for the election of stricted quarters at home to southern mia President for the University, eration,