US803702A - Band sawing-machine. - Google Patents

Description

N0. 803,702. PATENTED NOV. 7, 1905. J. J. MEYBRS & T. G. FROST.

BAND SAWING MACHINE. APPLIM TIQN FILED MAB. 27, 1905.

2 SHEETS-SHEET 1.

N0- 803,'702. PATENTED NOV. 7, 1905. J. J, MEYERS & T. G. FROST.

BAND SAWING MACHINE.

APPLICATION FILED MAR.27, 1905.

2 SHEETS-SHEET 2.

24 /77 Fig.4. 2?. 23

UNITED STATES PATENT oEEIcE.

JOHN J. INIEYERS, OF CINCINNATI, AND THEODORE C. FROST, OF CAR- THAGE, OHIO, ASSIGNORS TOJ. A. FAY & EGAN COMPANY, CINCINNATI, OHIO, A CORPORATION OF WEST VIRGINIA. 7

BAND SAWlNG-MACHINE.

Specification of Letters Patent.

Patented Nov. '7, 1905.

Application filed March 2'7, 1905. Serial No. 252,284.

0 at whom it iii/my concern:

Be it known that we, JOHN J. IWIEYERs, residing at Cincinnati, and THEODORE C. FRosT. residing at Carthage, in the county of Hamilton and State of Ohio, citizens of the United States, have jointly invented certain new and useful Improvements in Band Sawing-Vlachines, of which the following is a specification.

Our invention' relates to band sawing-machinesyespecially to the mounting for the upper band-saw wheel, and has for its object the providing of new and improved means for supporting the upper band-saw wheel; and our invention consists in providing a so-called gooseneck band-saw frame with an upwardly-projecting standard, between which and the upper lateral projection of the gooseneck frame guide-rods for adjustably supporting the saddle carrying the upper band-saw wheel are arranged; further, in providing the upper laterally-projecting bracket of the bandsaw frame with an upwardlyand laterally projecting supplemental bracket for receiving an upper saw-wheel-supporting saddle straddling the upper lateral projection of the gooseneckframe; further, in novel construction of frame and upper saw-wheel mounting; and the invention will be further readily understood from the following description and claims and from the drawings, in which latter Figure 1 is a front elevation of our improved device. Fig. 2 is an enlarged front elevation, partly broken away, showing our improved mounting for the upper band-saw wheel, the upper band-saw wheel and its shaft being omitted, Fig. 3 is a plan view of the same. Fig. 4 is a side elevation of the same, partly broken away and partly in section, on the line as of Fig. 2 and showing the saddle in lowered position; and Fig. 5 is a cross-section of the same on the line y y of Fig. 2.

1 represents the band-saw frame, which has an upwardly-extending column 2 and a laterally-extending bracket 3, forming a so-called gooseneck-frame.

4 4 is the table, above which said laterallyextending bracket projects.

5 is the lower band-saw wheel, preferably a solid-Webbed wheel. 6 is the upper bandsaw wheel, preferably a light-spoke wheel, and 7 is the band-saw blade adapted to travel about said wheels.

8 is the upper saw-wheel shaft or mandrel.

9 is the upper band-saw guide, and 10 is the lower band-saw guide. The upper band-saw guide 9 is supported on a rod 11, taking through a bearing 12 and secured in adjusted position by a set-bolt 13. The bearing 12 is on a casting 14, secured to the outer end of the bracket 3 by bolts 15.

The bracket 3 has an upwardly-extending standard 21, havinga secondary laterally-projecting bracket 22, thereby forming a double gooseneck frame, one of the goosenecks of which is superposed above the other. The upwardly-extending standard 21, which may be termed a secondary column, projects upwardly from the bracket 3, intermediate of the ends of the latter, closely adjacent to, but preferably out of transverse vertical plane with, the primary column 2. This secondary bracket may be bifurcated, as shown at 23, each of the tines thereof having a bearing therein, as shown at 24 25. The bracket 3 is provided with bearings 26 27, preferably in the form of lugs thereon. Rods 28 29 are secured in these bearings, as by bolts 31 32 33 34. A saddle 35 has ears 36, 37, 38, and 39, forming bearings taking about and sliding on the rods 28 29. For adjusting the saddle up and down a screw-threaded rod 41 is threaded in a bearing 42 on the bracket 3 and journaled in a bearing 43 on the saddle, the rod being preferably reduced, as shown at 44, at said bearing 43 for forming a shoulder 45, upon which the saddle rests upon the threaded rod. This rod is preferably vertically below the knife-edge bar of the upper saw-wheel bearing. The saddle supports a knife-edge bar 51, extending transversely of the saddle, said bar being pivoted at one end upon a pin 52 and being supported at its other end upon a screw-rod 53, the screw-rod having a knob 54 at its end taking into a T-slot 55 in the bar, the screw-rod being adjustable in a threaded aperture in the saddle by a band-wheel 56 and locked in place by a lock-nut 57. At said other end the knife-edge bar has setscrews 58 59, taking against it through threaded apertures in the saddle. These set-screws 58 59,

together with set-screws 6O 61, also having their inner ends taking against the knife-edge bar and threaded in the saddle, provide for laterally positioning the knife-edge bar at one or both ends, and the knife-edge bar, being pivoted upon the pin '52 at one end and supported upon the screw-rod 53 at its other end, can be tilted or tipped, thus correspondingly laterally swinging and tipping the upper bandsaw wheel for tracking the band-saw blade upon the wheels. The knife-edge bar takes into a groove 62 of the saddle, the set- screws 58, 59, 60, and 61 being threaded in the walls of said groove.

The upper band-saw-wheel shaft is journaled in a bearing 65. This hearing has a lever 66 projecting therefrom and also has an inverted- V socket 67 for receiving the bar 51. The lever 66 has a V-socket 68. The saddle has a stud 69, having a depending knife-edge face 70. A lever 71 has a \l-socket 72 for receiving the knife-edge 7 O. This lever also has an inverted-V socket 73. A link 74 has knifeedges 75 76, taking into the respective sockets 68 73. A finger 77 is secured to the bar 51 and takes above the bearing 65 for preventing accidental displacement thereof. The lever 71 is a tension-lever and is preferably provided with a weight 78. A lug 79 on a tailpiece 80 of the saddle limits the downward movement of the weight.

Our improved construction provides maximum strength and rigidity with minimum weight of metal in a scroll-saw, as it brings the upper saw-wheel-saddle-supporting parts closely adjacent to the transverse vertical plane of the primary column and to the column side of the said saddle, thereby leaving the outer side of the superposed gooseneck free to provide for overhang of the saddle, so as to provide maximum overhang of the upper saw-wheel, so as to have great width of stock-supporting table under the lateral extensions of the goosenecks, making it an especially desirable bandscroll-sawing machine. The primary lateral extension 3 of the pri-' mary goosen eck-frame projects over the worksupporting table from the main column 2, and the secondary upwardly-extending column or standard 21 and the secondary lateral projecting bracket 22, forming the superposed or secondary gooseneck, extend from the lower or primary gooseneck from a point closely adjacent to the main column, leaving a space open toward the free end of the primary lateral extension ,3, from which opening the upper saw-wheel saddle projects toward said free end of the primary lateral extension, thereby relieving said primary lateral extension from dead-weight of metal connecting with said secondary lateral extension outwardly of the point of support of the upper wheel-saddle and providing free space for the mounting, adjustment, and operation of the upper saw-wheel bearing parts. Our improved construction brings the parts and weight of the upper saw-wheel bearing parts to a point closely adjacent the column while providing great extent of clearance under the primary lateral extension and above the table for the manipulation of stock. It enables a light band scroll-sawing-machine frame of great strength and rigidity to be produced, thereby economizing in the cost of manufacture while producing a machine of enhance value.

In order to give the saddle a wide range of vertical adjustment, we recess the sides of the laterally-extending bracket above the bearings 26 27, as shown at 81 82, for receiving the ears 38 39, and provide the under side of the saddle with a groove 83 into which the bracket 3 takes when the saddle is in lowered position, thereby permitting the saddle to straddle the bracket.

Our invention provides a simply and cheaply constructed device whereby a wide range of tensioning adjustment for various lengths of band-saw blades is insured for ermitting a band-saw blade to be used upon the machine in spite of having been materially shortened by repeated brazings, thereby economizing in band-saw blades employed, and, further, provides delicate sensitive and easily-operated adjustments for. tracking and straining the band-saw blade. I

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In a band scroll-saw, the combination of a double gooseneck-frame, a table under the goosenecks of said frame, with a light-spoke wheel above having supporting and sliding connections with both said goosenecks, and a heavy solid-webbed wheel below.

2. In a band sawing-machine, the combination of adouble, superposed gooseneck-frame, astock-supporting table under the goosenecks of said frame, and an upper saw-Wheel saddle having supporting connection with both said goosenecks, substantially as described.

3. In a band sawing-machine, the combination of a double, superposed gooseneck-frame, a stock-supporting table under the goosenecks of said frame, an upper saw-wheel saddle having supporting connection with both said goosenecks, and means for adjusting said saddle up and down, said saddle laterally straddling a gooseneck and taking into its horizontal plane.

4:. In a band sawing-machine, the com bination of a double, superposed gooseneck-frame comprising a main column, an upper sawwheel-supporting saddle, rods between the upper lateral extensions of the goosenecks of said frame forming sliding supporting con- .nection for said saddle, means for adjusting said saddle up and down, said saddle laterally straddling a gooseneck for taking into horizontal plane with said gooseneck during adjustment of said saddle, a knife-edge bar mounted on said saddle and distanced farther from said main column than said rods, an upper saw-wheel-bearing-supporting lever piv oted on said knife-edge bar between said main column and the bearing carried by said lever, and means for tensioning said lever, substantially as described.

5. In a band sawing-machine, the combination of a frame having an upper lateral extension supporting a band-saw guide at its outer end, a standard thereon open at its side toward said outer end, an upper saw-wheelsupporting saddle, means for supporting and adjusting said saddle at said open side, said saddle having a groove at its bottom extending longitudinally of said extension, the walls of said groove taking about said extension during adjustment ofsaid saddle, substantially as described.

6. In a band sawing-machine, the combination of a primary gooseneck-frame and a stock-supporting table located in the opening of said gooseneck-frame,said gooseneck-frame comprising a primary column and a primary lateral extension,a secondary gooseneck superposed on said primary gooseneck-frame, an upper saw-wheel-supporting saddle and rods therefor having supporting connection with and located between said goosenecks, said saddle projected toward the free end of said primary gooseneck from said secondary gooseneck, and said secondary gooseneck being located upon said primary gooseneck adjacent to the column of the latter.

7. In a band sawing-machine, the combination of a double superposed gooseneck-frame, rods between the upper lateral extensions of said goosenecks, an upper saw-wheel-supporting saddle on said rods, means for adjusting said saddle, said saddle having a groove at its bottom, the walls of said groove taking horizontally to the side of the lower one of said upper lateral extensions during adjustment of said saddle, substantially as described.

8. In a band sawing-machine, the combination of a primary gooseneck-frame and stocksupporting table located in the opening of said gooseneck-frame, said gooseneck-frame comprising a primary column and a primary lateral extension, a secondary gooseneck superposed on said primary gooseneck-frame, an upper saw-wheel-supporting saddle and rods therefor having supporting connection with and located between said goosenecks, said saddle projected toward the free end of said primary gooseneck from said secondary gooseneclz, and said secondary gooseneck being located upon said primary gooseneck adjacent to the column of the latter, a knife-edge bar, means for adjusting said knife-edge bar on said saddle, an upper saw-wheel-bearing-supporting lever pivoted on said knife-edge bar, means for tensioning said lever, and an adjusting-screw for said saddle having threaded connection with said primary lateral extension under said knife-edge bar, substantially as described.

9. In a band sawing-machine, the combination of a double superposed gooseneck-frame, rods secured between the upper lateral extensions of said goosenecks, an upper saw-wheelsupporting saddle, said saddle having depending bearings at the sides thereof for said rods, and means for adjusting said saddle for bringing said bearings into horizontal plane with the lower one of said upper lateral extensions, substantially as described.

10. In a band scroll-sawing machine, the

combination of a frame comprising a column having a plurality of lateral extensions,a stocksupporting table under said lateral extensions, an upper saw-wheel-supporting saddle, means for adjusting said saddle up and down, rodbearings on said extensions and said saddle, rods therein, said saddle straddling an extension for bringing its bearings into horizontal plane with said extension.

In testimony whereof we have signed our names hereto in the presence of two subscribing witnesses.

JOHN J. MEYERS. THEODORE O. FROST.

Witnesses:

JOHN F. KRENKEL, ROY P. STEVENS.

Images