US1416777A - Drilling machine - Google Patents

Description

W. J, BAYBER, DECD- n. u. BAYRER aims ADMlNlSIRAT-OR.

DRILLINGMACHINE. 4 APPLICATION man saw. 18. (91.9..

hall

W-41. BAYRER, DECD.

n. H. BAYREB BEING ADMINISTRATOR.

DRILLING MAGHINE. APPLICATION FILED SEPT- 18. 1919.

Patented May 23,1922

' .bavem tar:

F510 Jfiayrer Machines, of. which the WILLIAIK J. BAYREB, OF HARTFOBD, CONNECTICUT; HOMER H. BA'YRE ADMINISTRATOR OF ,SAID WILLIAIE BETNG ASSIGNOR T0 a. BAYRER, DECEASED,

ROBERT G. HENRY, or wnsr rmn'rronn, CONNEGTECUT.

DRILLING MACHINE.

Specification of Letters Patent.

Patented May 23, 1922.

Application filed September 18, 1919. Serial Ito-324,630.

To all whom it may concern:

Be it known that I, WILLIAM J. BAYRER, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Drilling following is a specification.

This invention relates to drilling ma chines and especially to auxiliary mechanism suitable for drilling machines. of the well known type whereina .longitudinally movable tool carrying spindle is arranged to be rotated at various speeds best adapted for drilling holes within the range of its capacity. 7

The object of the invention is the pro- Vision in a machine of the type mentioned,

.of simple mechanism including a supplepacity of the machine by furnishingavail able speeds suited to a drill sizes.

The various features of novelty which broadly characterize the invention are embodied in either form of construction illus trated in the accompanying drawings and fully described in the following specification, while the appended claims define the scope of the invention, whicl1,it is to be understood, is not limited to theexact arrangement shown and described.

In the drawings,

Figure 1, is a side view of a drillingniachine provided with mechanism embodying the preferred form of my invention.

Figure 2, is a view partly in longitudinal section of elements which are shown in F 1 on a smaller scale and. in elevation.

Figure .3, is a view similar to Fig. 1. showing modified form of my invention. and,-.-

Figure 4, is a view similar to Fig. 2, showing partly in longitudinal section, elements which are shown in Fig. 3, on a smaller scale and in elevation.

Like characters of reference designate like greater number of parts throughout the several views of the drawings.

Referring to the drawings of the preferred form of my invention, the numeral l, designates the base. Qthe pillar or column. and 3 the work table or support of drilling niachine. A bracket 4., secured to the col umn, supports a sleeve 5, the latter being longitudinally movable together with the spindle 6, which is rotatably extended through the sleeve. The spindle and sleeve may be counterbalanced iii-the usual manner by a weight 7, to which the sleeve is suitably connected as by the cable or chain 7. This arrangement permits movement of the sleeve to be effected with ease as through rack and pinion mechanism including rack S, pinion 9, and the manually operable lever 10, which provides in a familiar and obvious manner for control of the feed of a tool associated with the spindle.

' Means for rotating the spindle at several different speeds may include a stepped or cone pulley as 11. These speeds are suit- .iblefor such sizes of drills as are intended to be carried directly by the main spindle. which .as shown, is provided with the taper socket 12. As already intimated the present invention consists of mechanism associated with a drilling machine like or similar to that above described whereby the several speeds of the main spindle may be converted into a similar number of higher speeds suitable for drills of series of smaller than the sizes of drills of a series for which the speeds of the mainspiudle are adapted.

he additionalmechanism includes driving elements as the flangedpulleys i. and 15, and the driven elements, as the flanged pulley 16, and pulley 17. the latter comprising an enlarged portion of the supplemental tool chuck carrier or spindle it. The pulley it, is secured to, and rotates with an arbor 19. having a taper shank to fit the socket 152. before referred to. and with which drill spindles are commonly provided. The pulley 17, is also supported by arbor 19. but is rotatable thereon.- Annular ball bearings are fitted within the pulley 17, and upon its arbor. They are held in position by a head on the arbor, the spacing collar 20, and a cap 21, the latter being threaded into one end of the pulley. A thrust bearing, comprising ball 22, engaging hardened washers held in sockets respectively in the arbor and the tool carrier, is provided to resist thrust developed when a tool in the carrier engages its work. It will be noted that the bearings just described are so enclosed as to be well adapted for the lubrication desirable for extremely high speeds. Pulleys 15, and 16, are integrally connected by ahub 23, and mounted in axial parallelism with spindle 6, on a shaft 24. Said shaft at one end is provided with a head 25, to engage the inner ring of an annular ball bearing 26, mounted thereon. The inner ring of another ball bearing of the annular type 27, is also mounted on the shaft and spaced from the other hearing by an elongated collar 28, beyond which another collar 29, and a nut 30, are respectively sleeved and threaded upon the shaft.

By means of the nut the bearing elements on the shaft may be drawn into secure and rigid relation. The outer rings of bearings 26, and 27, are respectively held in the pulley hub near the lower and upper ends thereof. In order to retain lubricant for the bearings the pulley hub is fitted at its ends with suitable caps as 35, and 36.

Means are provided to support shaft 24, in a manner to permit of its adjustment to tension belts 38 and 39, and also to align pulleys 15 and 16, respectively with pulleys 14 and 17. Such means may include the split collar 40, and a holder 41, the latter being held by a set screw 42, in a depending arm 43, of said split collar, which collar is clamped to the spindle feeding sleeve by a screw 44. The head 45, of holder 41, is bored to receive the slightly reduced end 46, of shaft 24, which may be held as desired by the set screw 47. In order to entirely remove this preferred form of high speed attachment from the drilling machine it is necessary to simply loosen the screw 44, and to disengage the taper shank of arbor 19. from its socket 12.

Referring to Figs. 3 and 4, which illustrate a modified form of my invention, the parts comprising the auxiliary mechanism will now be described. The driving elements thereof are the flanged pulleys 50 and 51, and the driven elements are the pulleys F52 and The pulley 50, is secured to and rotates with the main spindle 6, while pulley 53, is supported on an arbor 54, in a manner identical to that already described in setting forth the arrangement of pulley 17, in the preferred form of the invention. Pulleys 51 and 52, are integrally connected. by an elongated hub 51, and mounted in axial parallelism with spindle 6, on a shaft Said shaft-at one end is provided with a head 56, to engage the inner rin of an annular ball bearing 57, mounted t ereon. The inner ring of another ball bearing of the annular type 58, is also mountedon the shaft and spaced from the other bearing by an elongated collar 59, beyond which another collar 60, is sleevedupon the shaft to properly space bearing 58, from the shaft support 61, through which latter the shaft extends to receive on its threaded end, a nut 62,-by means of which the shaft and the parts thereon may be drawn into secure and rigid relation. The outer rings of bearings 57 and 58, are respectively held in the pulley hub near the lower and upper ends thereof. In order to retain lubricant for the bearings, the pulley hub is fitted at its ends with suitable caps as 63 and 64. Shaft support 61, is adjustably secured to a shank 66, of the split collar 67, which may be clamped to the spindle feeding sleeve by a screw 68. By adjustment of the shaft support 61, along the collar shank, a suitable tension may be effected for the belts 71 and 72. said belts being provided to transmit motion from the driving to thedriven elements described. When the support is adjusted to a suitable position it may be secured against displacement by set screw 73.

In as much as the speed converting mechanism set forth in either form of the invention is entirely supported by sleeve 5, it follows that feeding of the tool driven thereby may be accomplished in the same manner and by the same mechanism as that of a tool carried by the spindle proper. Furthermore this method of attaching the speed converting mechanism requires nothing in the nature of bosses, brackets or the like, in permanent association with the rest of the machine.

Having thus described my invention, what I claim is,

1. In a drilling machine, in combination, a support, a non-rotative longitudinally movable sleeve carried by the support, a rotary spindle extending through and movable with the sleeve, a tool carrier rotatably mounted on the spindle, and spindle driven means supported by the sleeve and adapted to drive the tool carrier.

2. In a drilling machine, in combination, a support, a longitudinally movable sleeve carried by the support, a rotary spindle extending througl'i and movable with the sleeve, a driving element on the spindle, a tool carrier including a driven element rotatably mounted upon and in axial coincidence with the spindle, a radially extended arm secured to the sleeve, a shaft supported in the arm, and means associated with the shaft adapted to be driven by the driving element on the spindle and adapted to drive the driven element associated with the tool carrier. r

In a drilling machine, in combination, a support, a longitudinally movable sleeve carried by the support, a rotary spindle extending through and movable with the sleeve, a pulley secured to the rotary spindle, a rotary tool carrier mounted on the spindle and adapted to receive and be driven by a belt, an arm secured to the sleeve, a pulley supported by the arm, a belt engaging the spindle pulley and the arm supported pulley a second belt engaging the tool carrier and the arm supported pulley, and means for permitting adjustment of the arm to tension the belts.

In testimony whereof I have afiixed my signature.

WILLIAM J. BAYRER.

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