US1361632A - Feeding means for drills - Google Patents

Description

F. M. SLATER.. FEEDING MEANS FOR DRILLS. APPLICATION FILED APR. 15, 1919.

Patented Dec. 7, 1920.

I III" INVENTOR.

ATTORNEY UNITED STATES PATENT OFFICE.

FRED 1V1. SLATER, OF EASTON, PENNSYLVANIA, ASSIGNOR TO INGERSOLL-RAND COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW J ERSEY.

FEEDING MEANS FOR DRILLS.

Specification of Letters Patent.

Patented Dec. 7, 1920.

Application filed April 15, 1919. Serial No. 290,199.

To all it 710m it may concern:

Be it known that I, Finn) M. SLATER, a citizen of the United States, residing at Easton, in the county of Northampton and State of Pennsylvania, have invented a certain new and useful Improvement in Feeding Means for Drills, of which the following is a specification. j

This invention relates to mounting and feeding means for fluid actuated tools and in particular to a feeding means for percussive drills which will permit a long travel of the drill motor in its shell.

The objects of the present invention are to provide a feeding means for rock drills which will permit a greatly increased length of travel of the drill motor or cylinder without changing the position of the shell in which the cylinder is mounted and which will also permit the operator of the tool to follow the tool and remain constantly up with it as it moves forwardly. A further object of the invention is to provide a construction in which all of the controlling devices for the tool are mounted upon the drill motor; that'is, the crank handle which is usually found at the rear of the shell is mounted on the drill motor or cylinder in proximity to the throttle and therefore moves with the motor rather than remains stationary on the shell.

In the feed shells as at present made the length is greatly limited by the fact that the feed handle and throttle handle must be at all times within the reach of the operator and so the movement of the tool forwardly is limited to the distance the operator can reach from the feed handle to the throttle. In the present construction the throttlefand feed handle are always conveniently near each other and the only limit to the length of travel of the tool is the length of steel usedor depth of hole desired.

A further object of the invention is to provide mechanism to provide this long feed for the tool which may be attached to present forms of tools without alteration although it is to be understood that a new tool may be provided with the parts of the mechanism made integrally .with the cylinder or back head.

With the above and other objects in view my invention consists in the features of construction and operation set forth in the following specification and illustrated in the accompanying drawings, in which:

Figure 1 shows a longitudinal view of the shell with the drill motor thereon;

Fig. 2, a longitudinal view in section of parts forming the present invention;

Fig. 3 a transverse view of a modified form of the invention;

Fig. 4:, a view taken on the line 44 of Fig. 2; and

Fig. 5;, a portion of the feed screw and its connection to the shell.

Referring more particularly to the figures of the drawing, 1 refers to the shell in which the motor casing 20f a percussive tool is adapted to slide. The shell 1 is of the usual type used in connection with rock drills except for its length which is greatly increased. Extending longitudinally of the shell 1 is a feed screw 3 supported centrally of the shell by means of short supporting members 4 having a bearing 5 for the ends of the feed screw 3 and a threaded extension 6 extends through the wall of-the shell 1 below which is located a nut 7 securely holding the supporting member 4 in place.

The motor casing 2 shown in the annexed drawings is one of the usual form to which the present form offeeding means is adapted to be attached without any modification of the tool. This provides a form that may be applied readily to any tool already completed but it may be readily seen that in the manufacture of new tools some of the parts may be constructed integrally with the motor casing as parts of the back-head or of the cylinder.

The feed screw 3 passes through the feed nut 8 inserted in the usualway in lug 9 provided on the lower surface of the motor casing 2 so that the feed screw 3 passes through a portion of the motor casing 2. In the form of the invention shown in Figs. 2 and 1 the feeding means are attached to the motor by means of the feed nut holding sleeve 10. The sleeve 10 is provided with a circumferential groove 11 by means the groove 11. The frame 12 is also provided with lateral extensions 13 adapted to enter corresponding guideways 14 provided in the shell 1. A gear 15 is mounted on the feed screw 3 and is held from rotating loosely thereon by means of a key 16, held in the gear 15 and entering a splineway 17 provided from end to end of the feed screw 3.

From the above description it will be seen that rotation of the gear 15 will rotate the feed screw 3 and as the feed nut 8 is rigidly fastened to the drill casing 2 the drill casing will be forced forwardly or rearwardly depending upon the direction of rotation of the feed screw 3.

As a convenient way of rotating the gear 15 the frame 12 is provided with a short shaft 18 upon which a gear 19 is fastened in a position to mesh with the gear 15. Upon the shaft 18 a handle 20 is mounted conveniently located to be rotated by the operator.

In the modified form of the invention shown in Fig. 3 the gear 21 which corresponds to gear 15 in Fig. 2 is in the form of a worm gear wheel and meshing with it is a worm 22 mounted upon a short shaft 28 upon which the handle 24 is located. This form of the invention provides the handle 24 at one side of the drill casing 2 instead of as shown in Figs. 1 and 2 directly in rear of the drill casing 2.

.It is to be understood that the present showing and description disclose only certain specific embodiments of the'present invention and that other forms and modifica tions are included within the spirit and scope of the invention as expressed in the appended claims.

What I claim is:

1. In feeding means for fluid actuated tools, in combination, a shell, a drill casing slidably mounted in said shell, a rotatable feed screw mounted longitudinally of said shell and passing through a portion of said drill casing and means attached to said drill casing and movable therewith including a feed nut carried by the drill casing and directly engaging the feed screw for manually moving said drill casing forwardly and backwardly in the shell.

2. In feeding means for fluid actuated tools, in combination, a shell, a drill casing slidably mounted in said shell, a rotatable feed screw mounted longitudinally of said shell and passing through a portion of said casing, a feed nut carried by the drill casing and engaging said feed screw, a gear splined to said feed screw and means attached to said drill casing and movable therewith for rotating said gear to move said drill casing forwardly and backwardly in the shell.

3. In feeding means for fluid actuated tools, in combination, a shell, a drill casing slidably mounted in said shell, a feed screw mounted longitudinally of said shell and passing through a portion of said drill cas ing, said drill casing being provided with means attached thereto and moving therewith adapted to rotate said feed screw, said means comprising a pair of gears and hand operated means for rotating said gears to rotate the feed screw, and a feed nut carried by the drill casing for engaging said feed screw to move the drill casing forwardly and backwardly in the shell.

4. In feeding means for fluid actuated tools, in combination, a shell, a drill casing slidably mounted in said shell, feed screw mounted longitudinally of said shell and passing through a portion of said drill casing, said drill being provided with means attached thereto and moving therewith adapted to rotate said feed screw, said means comprising a gear splined to said feed screw, another gear meshing with said first mentioned gear, means for rotating said gears to rotate the feed screw, and a feed nut carried by the drill casing for engaging said feed screw to move said drill casing forwardly and backwardly in the shell.

In feeding means for fluid actuated tools, in combination, a shell, a drill casing.

slidably mounted in said shell, a feed screw mounted longitudinally of the shell and passing through a portion of the drill casing, a feed nut carried by the drill casing for engaging said feed screw and manually operated means mounted on and moving with said drill casing for rotating said feed screw relative to said feed nut to advance or recede said drill casing in said shell.

In testimony whereof I have hereunto set mv'hand.

FRED M. SLATER.

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