US381635A - Saw-guide - Google Patents

Description

(No Model.) Y 3 sheets-sheet 1.

J. O. MORROW.

SAW GUIDE.

. Patented Apr. 24, 1888.

INVENTOR WITNBSSBS ATTORNEYS.

(No Model.) 3 Sheets-Sheet 2..

J. 0. MORROW. Y

SAW GUIDE.

No. 881,635. Patented Apr. 24, 1888.

WITNESSES @i f @64%. JW

ATTORNEYS.

(No Model.)

3 Sheets-Sheet 3.

J. 0. MORROW.

SAW GUIDE.

Patented Apr. 24, 1888.

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INVBNTOR;

UNTTED STATES `ATENT OEETcE.

SAW-GUIDE. Y

SPECIFCATION forming part of Letters Patent No. 381,635, dated Applica'icn filed July 2, 18's?.

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Serial No. 243,264. (No modell vsaw-guide, wherein the guiding arms are so arranged that they may he reversed so as to be used in right or left hand mills, and wherein ,the outer guiding-arm is arranged so that it may be turned to a position to permit of the removal of the saw from its arbor, a proper adjustment of the several parts of the guide being provided for, as will be hereinafter more fully described, and specifically pointed out in the claims.

Reference is to be had tothe accompanying drawings, forming a part of this speciiication, in which similar iigures of reference indicate corresponding parts in all the views.

Figure 1 is a plan view of a lefthand mill, representing the same in outline as it appears when arranged in connection with my improved form ofguide.- Fig. 2 is a view of the gnide,representing the saine as it appears when adjusted for nsein connection with a right hand mill. Fig. 3 is an end view of the guide, parts being adjusted as represented in Fig. 2. Fig. fl is a view of the top of the guide, the scale formed thereon being clearly shown, Fig. 5 is a central sectional view of the shafts arranged in connection with the guide-arms. Fig. 6 is a view of the seat with the movable section of the guide removed; and Fig. 7 is a longitudinal section, on an enlarged scale, of the device as shown in Fig. 5 and at right angles thereto.

In constructing such a saw-guide as the one illustrated in the drawings above referred to I provide a seat, 10, which is connected to the husk by bolts 11, which pass through slots 12, that are formed in the upper plate of the seat, setscrews 13 being arranged to engage with lugs or ears lai, formed at the sides of the vertical plate ot the seat and to bear against the forward face of the husk, while a rear setscrew, 15, passes through a lug, 16, and engages at the rear of the husk, the arrangement being such that the seat may be raised or lowered to suitthe height of the saw-arbor, or shifted in' or out, as required, by the thickness of the sawcollar.

In the front ofthe vertical plate of the seat 10 there is an undercut groove, 17, in which there is fitted a correspondingly-shaped leg, 18, which supports the movable sections or portions of the guide, this leg being provided with a central slot, 19, through which there is passed a set-screw, 20,which engages with the seat, this construction being adopted in order that the movable sections of the guide will not be liable to fall against and injure the saw should either one ofthe fastening devices become loosened.

To the upper end of the leg 18 there is secured the lower section, 2l, of a bearing for a hollow shaft, 22, the upper section of the bearing being shown at 23, and the two sections being c'onnectedby bolts 2l, as clearly shown in the drawings. To the forward end of the shaft 22, I connect an arm, 25, which carries a guiding pin or bearing, 26, an extension, 27, being arranged in connection with the arm 25, and within the shaft 22, I mount a shaft, 28, which carries an arm, 29, which arm in turn is provided with a second guiding pin or bearing, 26"l In the rear end of the shaft 22, Ilit a plug, 30, that is centrally apertnred and threaded, in order that it may be engaged by a thread formed upon the shank 3l of a hand-wheel, 32, this shank 31 being hollow,in order that it may receive the shank 33 of ahand-wheel,34,

said shank 33 being threaded to engage with a threaded aperture formed at the inner end of the shaft 2S. In the shaft 28, I form a longitudinal slot, 35, and transversely-entending slots 36, and through the longitudinal slot so formed I pass a pin, 39, which is rigidly connected to the shaft 22.

The shank 33 is supported by a bracket, 40, which is connected to the bearing-section 21, and upon either side of the bracket 40 there is arranged a collar, 41,which collars are rigidly connected to the shank 31, and thus hold said shank against lateral displacement, so that when the handwheel 32 is turned to advance its threaded shank the hollow shaft 22 will be forced outward, while, when a reverse motion is imparted to the hand-wheel, the shaft will be drawn inward, the shaft 28 being forcedinward or outward by turning the hand-wheel 34. Upon the section 21 of the bearing of the shaft 22 there is formed a shoulder, 2, upon which the arm 25 and its extension 27 rest, this shoulder being overlapped by a projection, 3, that is formed uponthe bearing-section 23, from which construction it will be seen that the arm 25 will be held against any rotary movement, which, of course, would be the ease with the shaft 22, the arm being rigidly connected to said shaft; and as the shaft 28 is connected to the shaft 22 by means of a pin, 39, it would be held against any rotary movement, except at times when the shaft was drawn clear forward, so that the pin 29 will register with the slots 36, in which case a quarter-turn might be given to the shaft 28, thus moving the arm 29 to the position in which itis shown in dotted lines in Fig. 3.

The guide is adjusted for use as represented in Fig. 1, and when it is desired to change from a right to a left hand mill the screwthreaded Shanks 3l and 33 are turned back from engagement with their shafts, the shafts are drawn forward so that the arm 25 and the extension 27 of the shaft 22 will clear the v shoulder 2 of the bearing-section 21., after which the position of the arm may be reversed; and when it is desired to remove or adjust a saw upon its arbor the hand-wheel 34c is turned so as to advance the shaft 28 until the pin 39 is brought into register with the slots 36,after which the shaft may be turned so that the arm may be carried to the position shown in Fig. 3.

v Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. In a saw guide, the combinationgvith the bearing, of a longitudinallyadjustable hollow shaft mounted in said bearing, an arm on the shaft and a guiding-pin on the arm, a rotary longitudinally-adjustable shaft within the hollow shaft and having an arm provided with a guiding pin or bearing, and means for locking the inner shaft against rotation within the hollow shaft, substantially as set forth.

2. In asaw-guide, the combination, with the hollow shaft having an arm provided with a g'uide pin or bearing, of theinner shaft having a longitudinal and transverse communicating slots, an arm provided with a guide pin or bearing, and a pin passed through the hollow shaft and slot of the inner shaft, whereby the inner shaft may be locked from rotation within the outer shaft, substantially as set forth.

3. The combination,witl1 the bearing having upper and lower shoulders,the longitudinallyadj ustable rotary hollow shaft therein,provided with an arm normally held from rotation between said shoulders, but adapted to be reversed therein, and the guide-pinon said arm, of the longitudinally-adjustable shaft within said hollowshaft and provided with an arm, and a guiding pinor bearing, substantially as set forth, whereby the position of the arms may be reversed for use with right or left saws, as described.

4. rIhe combination, withthe seat10, having slot 12 in its upper plate,- lug 16 at the end thereof, vertical dovetail groove in the outer face of its vertical plate, andthe set-screws 13, l

11, and 15, of the bearing, comprising upper and lower sections, 2l 23, the former having the depending leg 13 engaging the said dove` tail slot, and the adjustable shafts and the arms carried thereby and provided with guide-pins, substantially as set forth.

5. The combination, with a seat, of a bearing formed with an arm-seat or shoulder, a hollow rotary shaft, an arm and extension rigidly eonneeted thereto and arranged to rest upon the arm-seat, ashaft mounted within thei hollow shaft, an arm carried thereby, guiding pins or bearings carried by the two arms, and a means, substantially as described, for adjusting the shafts, as and for the purpose stated.

6. The combination, with a hollow shaft and its support, of a rotary shaft mounted within the hollow shaft and formed with slots 35 and 36, a pin, 39, connected to the hollowshaftand passing through the slot 35 of the inner shaft, arms carried by the shafts, guide-pins carried by the arms, and adjusting-screws connected to the shafts, substantially as described.

JOHN OSWALD MORROW.

Vitnesses:

H. M. HOLLINGSWORTH, HENRY CLEAR, Jr.

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