US595568A - Boring-machine for dowel-doors - Google Patents

Description

(No Model.) 2 SheetsSheet 1.

E. B. HAYES. BORING MACHINE FOR DOWEL DOORS.

Iva-595,568. Patented Dec. 14,1897.

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(No Model.) 2 SheetsSheet 2. E. B. HAYES. BORING MACHINE FOR DOWEL DOORS.

No. 595,568. Patented Dec, 14,1897.

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UNITED STATES PATENT EErcE.

ELI HAYES, OF OSHKOSH, WISCONSIN.

BORING-MACHINE FOR DOWEL-DOO RS.

SPECIFICATION forming part of Letters Patent No. 595,568, dated December 14, 1897. Application filed March 12, 1896. Renewed June 26, 1897. Serial No. 642,531. (No model.)

To all whom, it ntcty concern:

Be it known that I, ELI B. HAYES, a citizen of the United States, residing at Oshkosh, in the county of Winnebago and fitate of Wisv cousin, have invented certain new and useful the stiles and the rails of the door with either two, four, or any other number of holes, as may be desired.

I am aware that there have been gang boring-machines known and used heretofore, but they have not been adapted to boring both the stile and the rail and they have not been of such construction that a change could be instantly made from a two-hole borer to a four-hole borer, or'vice versa.

The objects of my invention are, first, to provide an effective and rapid means for boring the required number of holes either in the stile or in the rail of a door or similar article, as may be desired; second, to instantly shift the machine to bore a large or small number of holes; third, to provide an absolutely safe and sure method of clamping or holding the stile or rail in the exact required position, and, fourth, to provide a ready and efficient means of adjusting the machine to the boring of different-sized stiles and rails or any kind of panel-work.

' The invention consists of certain novel constructions, combinations, and arrangements cross-head which carries the boring-arbors and the power-shaft operating the same. Fig.

4a represents a detail plan view of the railtable. Fig. 5 represents a front elevation of the same. Fig. 6 represents an end elevation of'a door-stile, showing the location of the dowel-holes. Fig. 7 represents a detail top plan view of the cross-head, andFig. 8 represents a detail top plan view of one of the spring-stops.

Similar letters and figures refer to similar parts in each-view.

A inthe drawings represents the powershaft, on which the tight and loose belt-wheels A A respectively, are mounted. This shaft A is journaled in the boxes at a of the frame and is providedwith a broad belt-wheel B, about which pass two belts b b, that in turn pass over two flanged belt-wheels b I), hereinafter described. The shaft A is also provided with a worm O, that meshes with a worm-Wheel 0, fast on a shaft 0, that is journaled in the frame of the machine. This shaft 0 is provided with a belt-wheel D, that transmits power to a similar wheel D, mounted on a transverse shaft E, by means of an endless belt d. The belt 01 is of sufficient length to be normally loose on the wheels D and D, so as not to rotate'the wheel D, but is tightened when desired to cause such rotation by an antifriction idler or roller T, mounted on the end of a long pivoted bell-crank lever T. The forward end of. this lever projects beyond the front of the machine and is provided with a foot-pedal. By depressing this pedal the belt 01 is tightened and the'wheel D and its shaft E operated. The revolution of this shaft E operates a cam-wheel F, fast thereon, which wheel in turn operates a clampinglever F to clamp a door-stile G upon a supporting-table H. The rear end of the lever F is provided with an adjustable antifrictionroller f, that engages the periphery of the cam-wheel F,and when said roller f drops into the depression f of the wheel F the forward yoke end of said clamp-lever is raised. At all other times during the revolution of the cam F the forward yoke end of the lever F is held down, said forward end of the lever being provided with a pivoted shoe f that engages the door-stile.

The shaft E also carries a cam I, which engages a roller J, suitably mounted on the cross-head K, to force the said head forward. This head is supported and guided in its reciprocations by rods an m, with which it is provided and which work through suitable bearings n n on the frame. The said head after being forced forward by the cam is returned to its first position by a weight \V, mounted on a bell-crank lever R, pivoted 0n the frame. The lever B is connected to said head K by a link L. The jar or concussion of the return movement of the head is met by an air-cushion Y. This cushion comprises a piston 12, mounted on a piston-rod 13, connected to lever R and working in a dash-pot Y, having an air-vent y at its lower end. The dash-pot is pivot-ally mounted on the frame at y, so as to turn to follow the movements of the lever B.

The cross-head K is provided with yokes e and e, in which the rear ends of the bitarbors 7t 7a 713 7c are mounted by means of collars z a, so as to be capable of rotary movement only. The said bit-arbors cannot move longitudinally independently of the yokes because of the collars ,2 a, but are capable of rotary motion, as described. The yoke e is rigidly attached to the cross-head, but the yoke e is detachably connected thereto by a vertically-movable pin 2, pivoted to a lever 3 at the point at. This lever 3 is mounted on a shaft 5, journaled in the frame. The shaft 5 extends to the forward end of the machine and is provided with a lever 7, carrying a weight 8. The action of this weight normally holds the pin 2 down and thus causes the yoke e to move with the cross-head. \Vhen the shaft 5 is rotated by lifting the weight 8, the pin 2 is lifted clear of the crosshead, and the movement of the cross-head thus carries only the yoke c with it. The bit-arbors are journaled in boxesO O, mounted on the frame, and besides one of each pair being provided with belt-wheels b b, as before described, each pair is geared together by gears P. The forward ends of the pair of arbors are provided with bits 2' and 2", respectively.

A rod h is attached to the stile-supporting table H by brackets 7L and in turn supports spring-stops S S. (Shown in detail in Fig. 8.) Each of these stops comprises a split sleeve S provided with lugs S and a bolt S whereby it may be clamped upon the rod h in any desired position. A recess is formed in the outer end of the stop to accommodate a stop-pin S and a spring S, the pin S of the stop-pin working in a slot S and thus limiting the outward movement of the pin S The object of the spring-stops S S S S is to adjust the door stile or rail properly to the bits, so that the holes will be bored at the required distances from the end. The end of the stile is first placed against the side of the end stop and then pressed against the ends of the remaining stop-pins, compressing the springs, and is then clamped by the shoe f In passing the stile along to bore the next series of holes the end of the same is placed against the remaining stop-pins, compressing them as before, and then clamped. In this manner my invention is adapted to bore several different series of holes in the same stile and to adapt the machine to the various kinds of doors of different numbers of panels, and for this purpose any desired number of stops .9 may be used.

The table II slides upon a bracket H and is attached thereto by means of a dovetail connection similar to that shown at N, Fig. 5, and is secured in the proper position by the set-screws N N N. The bracket M slides vertically in the dovetail ways M on each side and is adjustable by the hand-wheel V.

In Figs. 4 and 5 I have shown an auxiliary rail-table which is adapted to slide by a dovetail connection N upon the bracket H in place of the stile-table II to adapt my invention to the boring of the door-rails. Screws N secure the table in the desired position on the bracket M. In this construction the guideplates 9 9, supporting spring-stops s s s .9, similar to stops S S, slide laterally in the dovetail ways 10 10 and are secured in the desired position by hand-wheels and screws 11. The rail is laid upon this table against the springstops upon one side and upon the top of and compressing the spring-stops upon the other side to gage the rail properly before it is clamped to receive the bits and, vice versa, to gage the opposite end of the rail, thus boring the holes at both ends of the rail from the face side and adapting the invention to any width of rail. The adjustment of the guideplates 9 9 laterally by means of dovetail ways 10 10 insures absolute relation to each other at all times.

In operating the machine the operator first places the stile G upon the table 11 against the spring-stops s s s s, as hereinbefore described, then by pressing downward upon the foot-lever T the idler T is forced against the belt d, applying the power to revolve the pulley D in the direction indicated by the arrow. The revolution of the pulley D revolves the shaft E, carrying wheel F, and raises the roller f out of the depression f, at the same time forcing the shoe at the opposite end of the clamping-lever downward upon the stile G to hold it in place while being bored. The continued revolution of the pulley D also revolves the cam I, the circumference of which presses against the roller J, which carries the cross-head, forcing it forward with the boring-arbors 7t 70, thus bringing the bits 11 1' against and into the stile. WVhen the cam I has revolved to the full diameter of its radius, the roller J is released from the point r of the cam I and is immediately brought back to its first position, carrying with it the crosshead and the bit-arbors by means of the weight W, as described. This eifectuallyprevents injury or wear to the machine and in connection with the weight 7 forms an effective device for returning the cross-head and bit-arbors after the holes are bored.- The cross-head moves forward at every revolution of the cam I, but does not carry with it the bit-arbors It is unless the same are locked to it by means of the pin 2, as hereinbefore specifically described, and thus the two bits 2" 1" can be omitted or included in the movement The arrangement of the bits and arbors need not necessarily be upon the same plan as shown in Fig. 3, but each alternating bit may be above or below the plane of the preceding one, if desired. 1

It will beobserved from the above that the stiles and rails can be gaged both in lateral and vertical directions to secure the proper position of the bits in relation to the same.

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

1. In a'gang boring-machine, thecombination of reciprocating bit-arbors, devices for reciprocating said arbors, and means for disengaging a portion of said arbors from the said devices at will.

2. In a gang'boring-machine, the combination with means for applying the power, of astile or rail supporting table, reciprocating bit-arbors, devices for reciprocating said arbors, and means for disengaging a portion of said arbors from said devices at will, substantially as described.

3. In a gang boring-machine, the combina tion with means for applying the power and revolving the bits, of a gage-table and parallel rod attached to the same, spring-stops adjustably mounted on said rod, and an automatic clamping device operating to clamp rails or stiles securely against the table, substantially as described.

4:. In a gang boring-machine, the combination with means for adjusting and clamping the rail or stile, of a bit-arbor-supporting frame, a cross-head adapted to be moved horizontally forward and back upon ways, arbors mounted on the cross-head and passing through the supporting-frame and carrying suitable bits, and means for disconnecting a portion of said arbors from the cross-head at will, substantially as described.

5. In agang boring-machine, the combination with means for applying the power of a stile or a rail supporting table, a clamping device to hold the stile or rail upon the table, a bit-arbor-supporting frame, a reciprocating cross-head, bit-arbors carrying bits and connected to the cross-head, means for revolving the arbors and bits, a cam operating at each revolution to move the cross-head forward and cause the bits to enter the stile or rail, and means for disconnecting a portion of the bits from the cross-head at will, substantially as described.

In testimony whereof I affix my signature in presence of two Witnesses.

ELI B. HAYES. Witnesses:

HENRY HENKEL, CHARLES J. SoH rrT.

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