US434756A - Saw guide - Google Patents

Description

A2 Sheets-Sheet 1.

1) N, WJ

Patented Aug. 19, 1890.

J. E. BILL. SAW GUIDE.

(No Model.)

ATTORNEYS.

I 2 Sheets-Sheet 2. J. E. BILL.

SAW GUIDE.

Patented Aug. 19, 1890.

(No Model.)

IWENTOR:v

wf/z e? M.

ATTORNEYS WITNSSEg e @We UNITED STATES PATENT OFFICE.

JOHN E. BILL, OF EVANSVILLE, INDIANA, lASSIGrNOR OF ONE-HALF TO THE HELFRIOH SAW' AND PLANING MILL COMPANY, OF SAME PLACE.

SAW-GUIDE.

SPECIFICATION forming part of Letters Patent No. 434,756, dated August 19, 1890.

n Application led February 23, 1889. Serial No. 300,973. (No model.)

To all whom t may concern.'

Be it known that I, JOHN E. BILL, of Evansville, in the county of Vanderburg and State 3 is a transverse vertical sectional View taken online y rj-of Fig. 1. Fig. 4 is a detail view of the single operating-lever and its cogged rack, and Fig. 5 is a sectional view taken on line e a.

The same numerals of reference indicate corresponding parts in all the figures.

Referring to the several parts by their designating-numerals, l indicates the saw-frame, 2 the saw-arbor, and 3 a circular saw.

fi indicates the lower half of the drum or cylindrical outer casing of my machine, which is supported firmly upon the centrallongitudinal stem or web 5 of a base-6, this lower half 4C being cast integral with the said stem and base, by which means great strength and solidityof support are obtained. The base is secured adjustably upon the frame 1 by bolts 7 passing through slots 8 in the base-ange.

4 indicates the upper half of the drum or cylindrical outer casing, the two halves of the Casin g being bolted together by screw-bolts 9, passing through ears 10 of the two halves. Within this drum or outer casing iits a cylindrical sleeve 11, which is larger than the casing 4 4a, the forward projecting end of this sleeve having formed integral with it one of the guide-arms, which maybe called the inner guide-arm 12. In this cylindrical sleeve 11 fits a shaft 13, round in cross-section and having cast integral with it at its outer end the other or outer guide-arm 14.

15 indicates an adjusting rod or screw,which is formed at its outer end with a circular head, this screwrod being prevented from longitudinal movement by its outer end being held in a ball-and-socket joint, as hereinafter set forth, which arrangement permits of the rod being turned freely. Theinner end of this rod is screw-threaded and iits in a threaded central longitudinal opening 16 in the rear end of the shaft 13, so that it will be seen that as the threaded rod is turned bymeans of a hand-wheel 17, which is formed on its outer end, the shaft 13, and with it its guidearin 14, will be moved in orout, according to the direction in which the screw-rod is rotated. Y Upon the rod 15 is mounted a sleeve 18,

formed at its outer end with a hand-wheel19,

by which it is turned, and having its inner end formed with an exterior screw-thread. The rear end of the cylindrical sleeve 11 is formed with an interior screw-thread, and in this threaded end of the sleeve 11 Works the threaded inner end of the adj Listing-sleeve 18. The inner end of sleeve 18 has a bearing against a collar 19 on the rod 15, while a collar 2O forms a bearing for its outer end. It will be seen that as the adj usting-sleeve 18 is turned by its hand-wheel 19 the cylindrical sleeve 11,and with it its guide-arm 12, will be adjusted in or out, according to the direction in which the sleeve 18 is rotated. From the foregoing it will be seen that by turning the rod 15 and adjusting-sleeve 18 by their handwheels the guide-arms can be separately and quickly adj usted to get the exact required distance between them.

In the jaw of each guide-arm is seated a wooden guide-pin 2l, having a central aperture 22 passing clear through it, and a tube or pipe 23 leads water from a tank or other suitable water-supply to the pin 21, so that a constant stream of cold water is led through the wooden pins to the blade, and thus prevents heating and expansion of the saw by friction, the steady How of water keeping the feed-apertures 22 of the wooden guide-pins clear and preventing their becoming clogged, thus insuring the perfect working of the cooling device. The two guide-arms, when properly adjusted, are held parallelto each other by means of a metal pin 24:, which passes through opposite openings in the rear end of the guide-arms, this movable pin being se- IOO , ball-andsocket joint 31, as shown.

cured in place by a thumb-screw 25. When new wooden guide-pins are to be inserted, the thumb-screw 25 is loosened, when the pin 24 is moved until its end is clear of the outer guide-arm,when the said arm can be turned up or down until ready access can be had to the clamping-jaws and the wooden pins.

2G indicates a shaft, which is supported in bearings in castings 27 27, which are bolted upon the frame 1 by bolts 28 passing through slots 28 in the casting-flanges. Collars 29 29 prevent longitudinal movement of the shaft. Upon this shaft is an eccentric-disk 30, which fits and turns in collar or circle 31, which is connected to the outer end of the rod 15 by a jecting end of the shaft 26 is squared, and upon it is secured the lower end of a handle or lever 32, by means of which the shaft can be easily and conveniently turned in its bearings.

33 indicates a metal casting having at its top a curved rack 34, and the lever 32 has at its upper end a spring-catch 35, so arranged, as shown most clearly in Fig. 4 of the drawings, that the lower end of the latch or bolt will engage with the teeth of the curved rack 34, the lhandle of the spring-catch being so arranged that it is conveniently operated by the sawyers hand as he grasps the handle of the lever. When the Sawyer moves the lever 32, the shaft 26 is turned, and the eccentricdisk 30, turning with the shaft, it will be, seen that the rod l5 will be moved back and forth, carrying with it the shaft 13 and sleeve l1, and thus both guide-arms are moved or adjusted together. The parts are so located that the sawyer can grasp and move the lever without leaving his position or bending over the saw and thus getting into danger, and can thus easily and rapidly adj ust both guidearms by the one movement. The springcatch on the lever lookin g into the teeth of the rack holds the guide-arms firmly at the exact point to which they are adjusted,so that they cannot be accidentally pushed out of that position by any force. Moving the lever one notch of the rack shifts the guide-arms oneforty-seventh of an inch, while a greater movement of the arms can be effected in a moment by moving the lever farther back or forth. A curved guide 36 for the lever is bolted to the side of the curved rack, as shown. The guide-arms can be swung over either to the right, as shown in Fig. 1, or to the left,`when required, so that the machine can be bolted to either side of a saw, according to whether it is a right or left hand saw.

To the inner guide-arm 12 is secured by a set-screw 38 an L-shaped support 37, which can be turned around on the set-screw, so that when the guide-arms are swung around to either side the lower .end of the support will rest upon the flange-base 6, thus forming a support for the guide-arms. When the adjustin g-sleeve 18 is turned by its hand-wheel to move in or out the cylindrical-sleeve ll,

One prothe sleeve is prevented from turningor twisting around in the outer drum or casing by a thumb-screw 39, which works in a threaded aperture in the outer casing, with its inner end fitting in a longitudinal recess 40, formed in the outer sido of the sleeve l1. The sleeve 11 is formed with two such longitudinal recesses, and the outer casing has two thumbscrews 39. When the guide-arms are turned down to the right, the right-hand thumb-screw is screwed down to enter the right-hand recess 40,while when the guide-arms are turned to the leftthe left-hand longitudinal recess 40 will register with the left-hand thumb-screw 39, which is screwed down to .enter the said recess. lt will thus be seen that the guidearms can be changed to either side by first screwing back one thumb-screw, only one of 'the screws being in use at a time, while the screw thus in use eectually prevents the sleeve 11 from turning or twisting in the outer casing when adj ustedin or out. The pin 24 prevents the inner shaft 13 from turning or twisting around in the cylindrical sleeve 11 when it is being adjusted back or forth, as will be readily understood.

Both the top and bottom halves of the drum or outer casing are recessed on their inner sides at 41, forming in the middle part of the drum an oil-chamber, which encircles and extends completely around the cylindrical sleeve 11, the outer casing being formed on top with afeed-opening 42, through which the oil is introduced into the machine. The space at both ends of the oil-chamber in the drum 4 4a is preferably babbitted, both in the upper and lower halves of the drum, which is of great importance, as it effectually prevents rust and corrosion, which would prevent the machine from working smoothly. The cylindrical sleeve 11 is formed both top and bottom with a central oil-hole 43, through which the oil passes from the chamber 41 to lubricate the shaft 13, and also the threaded rod 15 and adjusting-sleeve 18. By this arrangement the entire inner working parts within the outer casing are' kept effectually oiled and in perfect working order, and one filling with oil will keep the machine oiled for six or eight days in perfect working order, thus effecting a saving in time, labor, and oil.

If the outer casin g is found to fit too tightly around the cylindrical sleeve 11,packing can be placed between the meeting edges of the two halves 4 and 4 of the casing, and as the cylindrical sleeve wears loose in the casing the packing is gradually removed and the screw-bolts which hold the two halves of the casing together tightened, thus taking up wear.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. The combination, with the outer casing, of the cylindrical sleeve having the threaded rear end and the guide-arm, the shaft having rco guide-arm and the threaded rear end and thethreaded rear end and the guide-arm, the threaded adjusting-sleeve and rod, the shaft having the eccen tric-disk, the ring having the ball-and-socket joint connecting the end of rod 15 With the eccentric, the hand-lever having the spring-catch, and the curved rack, substantially as set forth 2. In a saw-guide, the co1nbination,with the outer cylindrical casing, ot the reversible sleeve 11 and shaft 13, having the guide-arms l2 and 14 at their forward ends, and the L- shaped reversible support 37, pivotally secured at its upper end by the set-screw 38 to one of the said guide-arms 14 l2, substantially as set forth.

3. In a saw-guide, the combination of the outer cylindrical casing having the tWo setscrews 39 39 passing through it from its outer side, the reversible cylindrical sleeve 11, extending through the said casing, having the having the two longitudinal recesses 40 40 in 'its outer side, the shaft 1?,.titting in the sleeve 1l and having the guide-arm and the threaded rear end, and the threaded sleeve 18 and threaded rod 15, substantially as set forth.

4. In a saw-guide, the combination,with the adjustable cylindrical sleeve and inner shaft, of the guide-arms having at their ends the registering apertures, the metal pin passing through said apertures, and the thumb-screw, substantially as set forth.

5. The combination of the outer casing formed with the annular oil-chamber and the top feed-opening, the cylindrical sleeve having the oil-holes, the threaded rear end, and

the guide-arm, the inner shaft having the threaded rear end and the guide-arm, and the threaded adj Listing-sleeve and screw, substantially as set forth.

JOHN E. BILL. Witnesses:

PETER MAIER, MATTHEW DALZELL.

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