US659092A - Grinding-machine. - Google Patents

Description

Patented Obi. 2, I900.

M 0 Dn T s N F Z 9 9 5 6 n N GRINDING MACHINE. Application filed Mar. 8, 1900.)

(No Model.)

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UNITED STATES PATENT FFICFE.

FRED A. NYSTROM, OF COSMOPOLIS, WASHINGTON.

GRINDING-MACHINE.

$PECIFIGATION forming part of Letters Patent No. 659,092, dated October 2, 1900.

Application filed March 3, 1900. Serial No. 7,187. \No model.)

To al whom it 11mg concern;

Be it known that I, FRED A. NYSTROM, a citizen of the United States, and a resident of Cosmopolis, in the county of Chehalis and State of Washington, have invented a new and Improved Grinding-Machine, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved grinding-machine which is simple and durable in construction, very effective in operation,and more especially designed for conveniently, quickly, and accurately grinding faces of band-saw wheels to render said faces true to insure proper running of the band.

The invention consists of novel featuresand parts and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the vlews.

Figure l is a perspective view of the improvement as applied. Fig, 2 is a transverse section of the same on the line 2 2 in Fig. l, and Fig. 3 is a similar View of the same on the line 3 3 in Fig. 1.

The grinding device illustrated in the drawings is applied directly to a band-saw mill mounted on a suitable frame A, in which are journaled the band-saw wheels B B, over which passes a band-saw (1. Between the band-saw wheels B B is arranged a grindingmachine frame D, fulcru med on a shaft or rod E, held on the frame A and extending parallel to the shafts of the band-saw wheels B B.

In the free end of the frame D is journaled a grinding-wheel shaft F, on which is mounted to slide and to turn with the shaft F a grinding-wheel G, of emery or other suitable material, and adapted to engage the face of either the band-saw wheel B or that of the band-saw wheel B to true the faces of said wheels in the manner hereinafter more fully described.

In order to cause the grinding-wheel G to turn with the shaft F and to move lengthwise of said shaft, the latter is provided with a key F, engaging a corresponding, groove in the hub of the grinding-wheel G. On one face of the grinding-wheel Gis a shifting carriage G, engaged by the fork of a shifting arm H, havinga nut H, screwing on a screwrod I, mounted to turn in suitable hearings in the frame D, a crank-arm I being on one outer end of the screw-rod I to allow the operator to turn the said screw-rod so as to cause the nut H, and with it the shifting arm.

mounted to swing loosely on a rod K,attached to the frame A, the rod K extending parallel to the rod E and the shafts of the band-saw wheels B B. The lower ends of the rods J engage a cross-bar D of the frame D, and nuts J screwing on the rods J, (see Fig. 2,) engage the cross-bar at the top and bottom IO securely fasten the cross-bar in position on the rods J. When the nuts J are loosened, the frame D can be swung up or down to bring the grinding-wheel G in contact with either the face of the wheel B or that of the wheel B, and when the grinding-wheel is in the desired position the nuts J are screwed against the top and bottom of the cross-bar D to securely fasten the frame D in position for the time being.

The grinding-wheel G is rotated from either the band-wheel B or B, and, as is shown in the drawings, the said wheel G is rotated from the wheel B, and for this purpose the shaft F of the grinding-wheel is provided with a pulley L, connected by a belt L with a pulley L on the rod E, and on the face of the pulley L is secured a second pulley L con nee-ted by a belt L with a pulley L held on a pulley L journaled in an auxiliary frame D mounted to swing from the shaft or rod E as the fulcrum. On the shaft L is secured another pulley L somewhat larger-than the pulley L and in contact with the peripheral surface of the wheel 8, so that when the band-saw mill is set in motion and the wheels B B are rotated then the rotary motion of the latter causes the pulley L to rotate, whereby the shaft L is turned and the rotary motion of this shaft is transmitted by the pulley L belt L pulley L pulley L belt L, and pulley L to the grinding-wheel shaft F to cause the grinding-wheel G to rotate.

From the foregoing it is understood that the band-saw mill furnishes the necessary power for driving the grinding-machine, and the frame D thereof is supported from the frame of the grinding-mill, and the frame can be readily adjusted so as to bring the grinding-wheel G either in contact with the face of the band-saw wheel B or the face of the band-saw wheel B. By the operator turning the crank-arm I the grinding-wheel G is moved lengthwise of the shaft F and at the same time rotates with the latter, so that the face of the band -saw wheel is trued accurately and in a very short time.

Having thus fully described my invention, Iclaim as new and desire to secure byLetters Patent 1. A grinding-machine, comprisinga frame mounted to swing, a grinding-wheel shaft journaled in the free end of said frame, a grinding-wheel mounted to turn with and to slide on said grinding-wheel shaft, a feeding device for engaging said grinding-wheel and carried by said frame, to move the grindingwheel longitudinally on its shaft and transversely of the band-saw wheel to be trued, and a support for the free end of said frame, and comprising a fixed rod, and screw-rods mounted to swing on the rod, and engaging said frame, and nuts on the screw-rods securing the frame in position on the screw-rods, as set forth.

2. A grinding-machine, comprisingaframe mounted to swing, a grinding-wheel shaft journaled in the free end of said frame, a grinding-wheel mounted to turn with and to slide transversely on said grinding-wheel shaft, a feeding device for engaging said grinding-wheel and carried by said frame, to move the grinding-wheel longitudinally on its shaft and transversely of the band-saw wheel to be trued, said feeding device comprising a shifting collar on the grindingwheel, a shifting arm engaging said shifting collar and having a nut, and a screw-rod mounted to turn in said frame and engaging said nut of the shifting arm, as set forth.

3. The combination with band-saw wheels, of a swinging grinding-wheel mounted between the band-wheels to swing into engagement with either of said wheels, and means for operating the grinding-wheel from one of the band-saw wheels, substantially as described.

at. The combination with band-saw wheels,

of a swinging frame mounted between the band-wheels, a grinding-wheel mounted in the free end of the frame, a feed device for feeding the grinding wheel transversely, means for locking the frame in position to hold the grinding-wheel in engagement with either band'wheel, and means for operating the grinding-wheel from one of the band-saw wheels, substantially as described.

5. The combination with band-saw wheels,

of a swinging frame mounted between the band-wheels, a grinding-wheel mounted in the free end of the frame, means for locking the frame in position to hold the grindingwheel in engagement with either band-wheel, a second swinging frame, a pulley or roller mounted in the free end of said second frame and engaging one of the band-wheels, and means for operating the grinding-wheel from the pulley, substantially as described.

6. The combination with band-saw wheels, of a swinging frame mounted between the band-wheels, a grinding-wheel mounted in the free end of the frame, a feed device for feeding the grinding wheel transversely, means for locking the frame in position to hold the grinding-wheel in engagement with either bandwheel, a second swinging frame, a pulley or roller mounted in the free end of the second frame and engaging one of the band-wheels, and gearing between the pulley or roller and the grinding-wheel, substantially as described.

7. A grindingmachine, comprising two oppositely extending swinging frames, a grinding-wheel mounted in one frame, a pulley or roller mounted in the other frame, gearing between the grinding-wheel and pulley or roller, whereby the former is operated from the latter, and an adjusting device for the frame carrying the grinding-wheel, substantially as described.

8. A grinding-machine, comprising two oppositely extending swinging frames, at grinding-wheel mounted in the free end of one frame,a feed device for feeding the grinding-wheel transversely, means for adjusting the frame carrying the grinding-wheel, a pulley mounted in the free end of the other frame, and means for operating the grindingwheel from the pulley, substantially as described.

9. In agrinding-machine, the combination with a swinging frame, and a grinding Wheel mounted therein, of screw-rods having their upper ends loosely mounted on supports and their lower ends projecting through a crossbar of the said frame, and nuts on the screwrods, substantially as described.

10. In a grinding-machine, the combination with a shaft or rod, a frame pivotally mounted on the shaft or rod, a grindingwheel mounted in the free end of the frame, a pulley on the shaft of the grinding-wheel, means for adjusting the frame, a second frame mounted on the said shaft or rod, pulleys mounted in the free end of the second frame, pulleys on the rod, and belts passing aroundthe said pulleys, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRED A. NYSTROM.

Witnesses:

W. R. MACFARLANE, LEWIS M. ROSER.

IIO

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