US341226A - dayis - Google Patents

Description

(No Model.) 2 sheetssheet 1.

J. DAVIS.

BORING MACHINE.

No. 341,226. Patented May 4, 1886.

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fizz avid)" (No Model.) 2 Sheets-Sheet 2.

J. DAVIS.

BORING MACHINE.

Patented May 4,1886.

UNITED STATES PATENT O FICE.

JOHN nAvIs, OF NEW YORK, N. r.

BORING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 341,226, dated May 4, 1886.

Application filed January 27, 1886. Serial No. 189,884. (No model.)

To all whom, it may concern.-

Be it known that I, JOHN DAVIS, a citizen of the United States, residing at the city of Albany, in the county of Albany and State of New York, have invented a new and useful Machine for Boring into XVood or Metal, of which the following is a specification.

My invention relates to improvements in wood and metal working machines; and the object of my invention is to provide an automatic boring-machine which will feed the Work to the auger and bore holes into a piece ofwood or metal, each hole being removed from the one preceding it at any desired distance, and especially arranged for boring holes into the stiles of window-blinds for the purpose of inserting therein the tenons of the blind-slats.

It is necessary, in the stiles of blinds, that the holes should be equidistant from each other and of the same depth. I attain these objects by the mechanism illustrated in the accompanying drawings, in whieh- Figure 1. is a rear perspective view of my machine, showing the driving portion of my machine. Fig. 2 is a plan of my machine. Fig. 3 is a front perspective View of my machine. Fig. 4 is a detail view of the feed mechanism, and Fig. 5 is a detail view of the driving mechanism of my machine.

Similar letters refer to similar parts th roughout the several views.

A A A representthe frame of my machine, which may be constructed of wood or metal, and may be arranged in any suitable manner to support the various parts of the machine.

In the bearing B, Iplace the shaft C,which carries the loose and tight pulleys G and G and the beveled driving-wheel D. The shaft 0 is supported at its end opposite the bearing B by a suitable bearing, The beveled driving-wheel D has a smooth bearing-surface, D, extending from the wheel proper toward the frame A of the machine, against which the friction-roller K presses when the feed mechanism is in operation. The beveled portion of the driving-wheelDis in close contact with the beveled friction wheel. E, which is attached to the shaft 6 by set-screw or other suitable means. The shaft .0 is supported at each end by suitable bearings, e and 6". Near the upper end of the shaft 6 there is attached to it the friction-wheel F, which revolves in contact with the friction-wheel G. The frictioirwheel G is attached by set-screw or other suitable means to the spindle g, and has sufficient bearing-surface to allow the spindle g to be raised and lowered, as hereinafter set forth, withoutdestroying the connection with the friction-wheelF. The spindle g carries the auger H at its lower extremity, and is supported at its upper end by a suitable bearing through which it may be freely moved, and just above the auger H the box 9 prevents undue vibration and holds the spindleg in position. The auger H is attached to the spindle g by nut and thumbscrew, or in any suitable manner. I thus drive my machine by frictiongearing, avoiding the vibration and uneven motion which is caused by the use of toothed wheels and belts.

I now proceed to describemy fee ling mechanism.

The arm t. attached to the frame A of my machine, is provided with a bearing supporting the friction-shaft '5 which carries the friction-wheel J, having a smooth periphery, and which is placed in contact with the friction-roller K, when the feeding mechanism isin operation. The shaft i'-'has a bearing connected to the frame A, and has attached to it on the front of the machine, Fig.3, the eccentric m, the cam O, and the crankarm N. The eccentric m has the con necting-rod m attached to the lever or rock-arm m which is centered at m Fig. 4. The end of the rock-arm opposite the connecting-rod 771- is attached to the rod m, which carries the collar m", which collar m is placed on the spindle 9 just belowthe friction-wheel G. The eccentric m thus imparts a reciprocal motion to the spindle g and causes it to move the auger H into the wood or'metal during the process ofboring, and at the proper time to withdraw it from the work and allow the piece operated on to advance the requisite distance. The cam-piece O is attached to the shaft and revolves with said shaft, pressing against the bell-crank lever O, which is connected to the rod 0 The rod 0" is flattened at its upper end, and generally has a rubber head placed thereon, and presses upon the stile or piece to be bored beneath the auger, and holds the stile or piece tightly and positively in position while the anger is entering the wood or metal, and then descends, removing the pressure, and allows the stile or piece operated on to move forward.

The crank-arm N, attached to the shaft this provided with a groove, into which athumbscrew, or, passes, and connects to the crankarm N the connecting-rod Nflwhich has a slot in its end to allow of the passage of the thumbscrew a. By means of the slot in the end of the connecting rod and the groove in the crank-arm the thumb-screw may be placed into different positions, and thereby the feed motion of the machine regulated in such a manner that the stile or piece to be bored may be moved a fraction of an inch, or three or more inches, as the nature of the work to be done demands.

The connecting-rod N is attached to the lever M, which is centered at a, and to the end of which is centered at a, and to the end of which is attached the block M. The block M has a tongue,which slides in the groove DP, and on the block M the dog P is movably attached. The crank-arm operates to move the dog I in a lateral direction backward and forward, and provides a feed motion for my machine.

, The rack Q is composed ofa notched wooden strip attached to a steel bar, The steel bar Q is wider than the notched strip, in order that the rack may pass to and fro through the apertures in the table It without interruption from the notches on the strip, and the bar Q is placed on its edge rather than on its face, in order that the rack may not sag when it extends from the machine, and precludes the necessity of a stay-bar to support it, as is necessary in racksnow in use.

The stile or piece to be bored is attached to therack by means of a thumbscrew and lug, or in any suitable manner. The rack passes through the table It, which is provided with apertures in each end forthat purpose, and the notched portion of it comes in contact with the dog I when the feeding mechanism is in operation. The steel bar Q extending below the notches on the wooden part of the bar, it slides without interruption in contact with the lower part of the apertures in the table R. The presser-feet S S are attached to the frame A by screw and slot, in order that they may be adjusted to correspond to the thickness of the piece to be bored, and are for the purpose of holding the stile orpiece to be bored in position during the time the anger is entering and leaving the work. The piece of steel L is a spring pressing against the side of the stile to keep it close to the frame of the machine, and thereby prevent the line ofthc holes deviating from the center of the stile. The curved lever T has a handle at its upper end, and at its opposite end carries the small friction-roller K. The friction roller Ii is generally made of rubber, but may be a felt-covered or metal roller. The leverT is fulcrumcd at T, Fig. 5. I attach a spring, I, to the frame A and to the lever T, which tends to draw thelevcr toward the frame of the machine, and when the lever is drawn-as near the frame as the slotted piece I will allow it to go the feed ing mechanism is out of gear. In the slotted piece I is arranged a thumb-catch, 1 which holds the lever T in place when drawn from the machine, counteracting the force of the spring I, and which may be made to loosen the lever when it is necessary to stop the feeding mechanism. To the lever T is attached the brake T, which presses against the wheel J when the lever is drawn toward the frame A and tends to prevent the revolution of the wheel J and bring the feeding mechanism to a standstill. Then the lever T is drawn from the frame extending the spring I and held by the thumb-catch I, the friction-roller K comes into contact with the smooth bearingsurface of the driving-wheel D and the wheel J, and the feeding mechanism of my machine is in gear. To the lever T is attachedthe rod T which is attached to the bell-crank lever L, which is connected with the upright bar L, upon which rests the end of the dog P. Thus, when the lever T is drawn toward frame of the machine by loosening the thumb-catch I, the end of the dog P is raised and the dog disengaged from the rack Q, allowing the rack to be drawn back ready to have another stile or piece placed into the machine. The table B, through which the rack Q, passes, is open at the bottom, and has a top extending but a short distance of its length. The top It may be raised or lowered by slot and screw to regulate, with the adjustable presser feet, the distance between 'them'to correspond with the thickness of the material to be bored. The finger S, attached to the pressenfoot S, is arranged as a guide to show the position necessary to place the rack in order to have the first hole come into the proper place in a blind-stile.

In order to bore a stile or piece of wood or metal in my machine, I place the piece or stile on the table It and attach it to the rack Q, arrange the prcsser-fcet S S and movable table top R to correspond. with the thickness of the piece to be bored, place the piece in proper position for the first hole, and arrange the length of feed by means of the connecting-rod N and crank-arm N, draw the lever T from the frame of the machine until it is held by the thumb-catch I, thus letting the end of the dog drop and bringing the dog into contact with the notches in the rack Q, and at the same time bringing the friction rollcr K into contact with the smooth bearing-surface I) of the driving-wheel D and with the friction-wheel J, and the feeding mechanism a is in gear. Vhen the belt is placed'on the tight pulley C the beveled driving-wheel. D is moved and it communicates motion to the beveled frictionwheel E- and friction-wheel F, and the friction-wheel F, pressing against the frictionwhcel G, which is attached to the spindle carrying the auger II, the auger H is caused to revolve. The beveled driving-wheel 1) also communicates its motion to the frictionqrollcr IIO K, and that roller, pressing against the friction-wheel J, causes the shaft 47 to revolve, and thus puts the eccentric m in motion, causing the spindle g to move up and down at proper intervals,and thus allowing the auger to enter and leave the piece. The cam 0 also derives its motion from the friction-shaft i, and causes the clamping-rod O to press against the under side of the piece when the anger is boring, and to remove the pressure when the piece is being moved forward; and the crank-arm N receives its motion from the friction-shaft i and operates to movethe dog 1?, and therefore the rack Q, in a lateral direction, thus causing the strip, piece, or stile to move forward after one hole has been bored and the auger left the piece the requisite distance for the next hole.

My machine as thus constructed is very simple in its arrangement, and can be run by an unskilled hand, and performs its work accurately and effectively.

I am aware that I have described in my application for a patent for a carving-machine filed November 23, 1885, substantially the same mechanism for causing the knife to revolve that I describe herein for causing the revolution of the auger, and in my said former application I claimed as part of my invention the arrangement of said mechanism in combination with a knife and vise, the knife and vise being necessary elements of a carvingmachinc. In this application I do not claim as my invention the arrangement of the friction wheels and rollers constituting the driving mechanism for the anger; but

XVhat I do claim as my invention, and desire to secure by Letters Patent, is

1. In machines for boring into wood or metal, the combination of the driving-wheel D, having a smooth bearing-surface, D, the friction-wheel E, attached to the shaft 0, the friction-wheel 1?, also attached to the shaft 6 and placed into connection with the frictionwheel G, attached to the spindle g, and the augur II, also attached to the spindle g, with the friction-roller K, attached to the lever T, the friction-wheel J, attached to the frictionshaft 2' the eccentric m, attached to the friction-shaft V, the rod in, and collar W, attached to the spindle g, with the cam 0, attached to the friction-shaft i", in' contact with the bellcrank lever O, and the clamp-rod 0 attached to the bell-crank lever O, with the crank-arm N, attached to the friction-shaft t the connecting-rod N", adj ustably connected to the crank-arm N, the lever M, and the dog P, at tached to the block M, all substantially as described, and for the purpose set forth.

2. In machines for boring into wood or metal, the combination of a rack composed of a notched wooden portion, Q, and a metal portion, Q, the metal portion extending below the notches on the wooden portion of the rack, with the (log P engaging in the notches in the wooden portion of said rack, with the lever M, carrying the dog P, the connectingrod N adjustably connected to the crank-arm N, the crank-arm N, attached to the frictionshaft i all substantially as described, and for the purpose set forth.

3. In machines for boring into wood or metal, the combination of the driving-wheel D, having a smooth bearing-surface, D, the friction-wheel E, attached to the shaft 6, the friction-wheel F, attached to the shaft e and in contact with the friction-wheel G, the spindle g, carrying the augur H, and the friction- Wheel G, with the lever T, carrying the friction-roller K, the connecting-rod T", attached to the bell-crank lever L, the upright bar L, attached to the bell-crank lever L, the spring I, attached to the lever T and to the frame A A of the machine, and the thumb-catch I with-the friction-wheel .I, attached to the friction-shaft 4?, the eccentric m, attached to-the friction-shaft f, the rod m", and collar m, attached to the spindle 5 with the cam O, attached to the friction'shaft f, in contact with the bell-crank lever O, and the clamp-rod 0 with the crankarm N, attached to the frictionshaft '1', the connecting-rod l7", adjustably connected to the crank-arm N, the lever M, and

block M, attached to the dog 1, with the rack composed of a notched wooden portion, Q, and a metal portion, Q, the metal portion extending below the notches on the wooden portion of the rack, with the presser-feet S S, attached to the frame A A of the machine, the adj ustable tabletop R, and the spring-bar 1 all substantially as described, and for the purpose set forth.

JOHN DAVIS. lVitnesses:

XVALTER E. WARD, JOHN N. llIAYER.

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