US1369313A

US1369313A - Attachment for drill-presses

Info

Publication number: US1369313A
Application number: US261587A
Authority: US
Inventors: Anthony F Zega
Original assignee: Individual
Current assignee: Individual
Priority date: 1918-11-08
Filing date: 1918-11-08
Publication date: 1921-02-22
Anticipated expiration: 1938-02-22

Description

A. F. ZEGA.

ATTACHMENT FOR DRILL PRESSES..

APPLICATION FILED NOV- 8, 1918- Patented Feb. 22, 1921.

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ATTACHMENT .FOR DRILL PRESSES. APPLICATION men NOV. 8, 1918.

1,369,31 3. Patented Feb. 22, 1921.

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IN l/EN TOR Azziwyl'Zggu 8) A7 anon/ms um'rao s'rarlazs ANTHONY I. ZEGA, OF NEWARK, NEW JERSEY.

ATTACHMENT FOR DRILL-FREEBIES.

Specification of Letters Patent.

Patented Feb. 22, 1921.

Application filed November 8, 1918. Serial No. 281,587.

To all whom it may concern:

Be it known that I, ANTHONY F. ZEGA, a

. citizen of Russian Poland, and a resident of Newark, county of Essex, and State of New Jersey, have invented certain new and useful Improvements in Attachments for Drill-Presses, of which the following is a specification.

My invention relates to attachments for drill presses, enabling the convenient performance of close work without interference with the normal use of the drill press for rough work.

Among the objects of the invention is the provision of a vertically adjustable work table provided with convenient means of adjustment and with shock absorbing means for protecting the parts from injury when sto ped at their limit of motion.

nother object of the invention consists in the provision of a drill or tool guide which may be located close to the work and which does not interfere with the use of the ordinary drill press table and which can not be made use of when the latter. is in osition for use.

other object of the invention consists in the arrangement and location of the various control and adjustment devices in a novel manner, makin them readily accessible and at the same/tame out of the way of workmen using the machine.

The invention further consists in the improvement of apparatus of the character referred to in a variety of particulars, as will appear from the following description and be pointed out in my claims.

With the foregoing and related objects in View, my invention consists in the parts, features of construction and combinations of elements herein described and claimed.

In the accompanying drawings, Figure 1 is a side view of a drill press equipped with my improved attachment. Fig. 2 is a front view of the apparatus shown in Fig. 1, and Fig. 3 is a horizontal sectional view taken on theline 33, Fig. 1.

The drill press may be of any usual or desired form. As illustrated, it has a base.

10 and. an upper or frame portion 11 with a vertically djustable drill spindle 12 driven from a belt pulley 13, over which the belt 14 passes. The usual system of

change speed pulleys

15 and 16 isconnected by the belt 17 and driven from fast and loose pulleys 18, 18'. Various other forms of drive,

be used. A weight 20 is provi ed for raismg the drill shaft 12, and means for ma nipulation of such shaft are provided, such as a rack 21 and a gear 22 and handle 23. These control members are preferably located on an adjustable arm 24 which may be ad usted up and down on the drill press frame, as by bemg slidably mounted on the sl1de 25 and locked in place by bolts 26.

The dr1ll press table for ordinary or rough work 1s designated by numeral 27 and is mounted on the drill press frame 11 so that it may be turned in a horizontal plane. In the form shown it is split and the two parts bolted together by bolts 28, provldlng between them a journal opening in which the horizontal ortion of the frame 11 1s received. The tab e 27 gets its entire support from its mounting on the frame 11. The table for close work is located lower down than the table 27 and is designated by numeral 30. Such table preferably is provided with

work locating bars

31 and 32 preferably arranged at right angles to one another and which may be received in slots provided for that purpose, or otherwlse secured in place. Undercut slots for receivlng bolts for holding the work may be arranged as desired on the work table, as,

for example, slots 33, 34 may be placed along two of the sides of the table and an lntersecting slot 35 may extend diagonally across the table.

The table 30 is mounted for rotation upon, the slide member 36 and may be secured in adjustable position. as by means of bolts 37 ,whose heads run in the circular undercut groove 38 in the slide member 36. The rotativeposition of the table may be read off from a scale 39, and an extra screw 40 may also be provided, in addition to the bolts 37, for locking the table 30 in desired rotative position. The slide member 36 is mounted to slide from side to side on a second slide member 41 and is actuated by a screw 42. Having the crank or handle 43 at the side of the machine and therefore out of the way of the operator, who usually stands in front of the machine, the position of slide member 36 is read from the scale 44 and vernier 45, which preferably face upwardly at an angle, as shown in Fig. 1, for convenience in reading. The second slide member 41 moves in and out on a bracket 47 being operated by a screw 48.

This screw is also turned by a handle at the side of the machine and designated by reference numeral 49. Its shaft 50 carries a preferably spiral gear 51 meshing with. a cooperating gear 52 on the screw shaft 48. Its position may be read from the scale 53 on the bracket 47 and ernier 54 on the slide member. (See Fig. 3.)

The bracket 47 is mounted for vertical ad justment on the machine base 10, being movable up and down on the slide 55. Its upward movement is limited by suitable means, as a late or stop 56, which, as shown, is bolte between the base member 10 and the upper frame portion 11 and extends into the path of movement of the bracket 47.

The handle 58 for raising and lowering the table is also located at the side of or beneath the machine adjacent to the

handles

43 and 49. It turns a shaft 59, imparting rotation through

gears

60 and 61 to a screw 62 which turns in an internally threaded sleeve 63 splined for longitudinal movement in a socket member 64 secured in the machine base 10. The sleeve 63 is supported by a compression'spring 65. The bracket 47 may be locked in place on the slide 55'by any suitable means, such as looking bolts 66.

A drill or tool guide is provided which can be moved out of the waywhen desired, or readily secured in accurate guiding position for the drill or other tool. Means are provided whereby this guide can be located close down to the table 30 when the latter is raised to its highest position, affordin an accurate guide close to the work. S uch ide comprises an arm 68 ivoted on the rame 11.at one side thereo as shown at 69, and provided with a groove or recess 70 for the reception of bolt 71, which is likewise pivoted to the other side of the frame portion 11, as shown in Fi 3 at 72. A nut 71 runs on the bolt 71. he outer end of the arm 68 is bent or turned downwardly, preferabl about as shown-in Fig. 1, and is provide with a guide opening 73 for guiding the tool and preferably formed with a hardened bushing 74.

The work table 27 is provided on one side, in the neighborhood where it is journaled on the frame portion 11, with a cut-out 75 to make room for the reception ,of the lower portion of the arm 68 when such arm and the table occupy the position shown in Fig. 1.

The opleration of the apparatus in accordance wit my invention is as follows:

When the drill press is needed for ordinary rough work,'the table 27 is swung to the position shown in full lines in Fig. 1 and in dotted lines in Fig. 3, the arm 68 having first been freed by unscrewing nut 71'- and then turned to the position also shown in full lines in Fig. 1 and in dotted lines in Fig. 3. It will thus be seen that the tool guiding means must be swung out of the way before the ordinary work table 27 can be put into use, and that it can not be harmed by the rough treatment to which it might be put if it were possible to make use of it at the same time the work table 27 is being made use of for ordinary rough drill press work. \Vhen the apparatus is to be used for closer work the table 27 is swung to the position shown in full lines in Fig. 3 and turning the table on its pivot or by manipulation of

handles

43 and 49, the extent of the movement bein readily read off from the scales and vermers, and the bracket 47 and the table 30 carried thereon may also be made to move up and down by manipulation of the handle 58. No harm to the apparatus can result from turning the handle 58 too far ortoo rapidly, since any shock of the bracket 47 against the stop 56 is taken up by the spring 65 serving as a shock absorbing means for such purpose.

It will be seen that all the various control means are located close together and beneath or at one side of the apparatus, where they are readily accessible to the left hand of the' operator, who at the same time may have his right hand free for other work, and that numerous other advantages are secured, as above referred to.

It is to be understood that changes and modifications from the apparatus shown for the purpose of illustration, may be resorted to within the scope of. my claims.

I claim:

1. In apparatus of the class described, a machine frame, a bracket slidable up and down thereon and carrying a work table, a screw for raising and lowering said bracket and table, a compression spring sup orting said screw, and positive stop means or limiting the upward movement of the table.

2. In apparatus of the class described, a machine frame, a bracket carrying a work table andmovab'le up and down on said frame, a screw for raising and lowering the table, a socket piece in the machine frame,

ANTHONY F. ZEGA.