US1501860A - Bench block and drill holder - Google Patents

Description

July 15, 1924. r 1,501,860

J. B. MARQUIS BENGH'BLOCK AN!) DRILL HOLDER Filed June 6, 1923 Patented July 15, 1924.

JAMES B. MARQUIS, OF NEW YORK, N. Y.

BENCH BLOCK AND DRILL HOLDER. I 3' To all whom it may concern 3 Be t kfn'ownthat I, JAMES B. M R UIs, a citizen of the United States, and residing at New York city, county of New York, State of New York, have invented certain new and useful Improvements in'Bench Blocks and Drill Holders, of which the following is a S specification.

This invention relates to mechanism which can be carried around in the hands of the user which will greatly facilitate the drilling of holes by the use ot the ordinar well known hand drills whicl are operatec by a rotating handle and intermediate bevel gears. In attemptin to use such drills it is very diilicultto ho d the drill bit steady and in proper position'to drill a clean cut hole at right angles to the surface being drilled; This is due not only to the natural unsteadiness of the hand of the user but to'the fact that while the operator is trying to steady the drill and exert the-necessary downward pressure on it with one hand the force exert ed by his outer hand in turning the drill is constantly changing its direction, thus tending to tilt the drill in different directions making it practically impossible to drill a satisfactory-hole particularly in hard metal. I am aware that others have devised sup 3U vorting brackets in the effort to avoid these nitliculties but all of them which I have seen fllllVG different objectionable features in one respect or another, many of them being too complicated and expensiveand likely to get out of order to appealto or satisfy those who wish'this type of device and others are defective in failing to perform all otthe necessary'fun'ctions to do satisfactory work.

My present invention is intended and adapted to greatly simplify the"construction of such devices by using a minimum number of easily made and assembled parts thus reducing the cost' of manufacture while at the same time securing the desired steadiness of the drill in operation and making possible the application of different degrees-of pressure on the drill within wide limits without any material variation in the pressure exerted by hand of 'the user and producing a device which is very easily operated and adjusted for operation. The novel features will be more fully understood from the following description and claimS taken ith the drawing.

Application filed June 6, 1923. i Serial No. 643,816.

In the drawings:

Fig. 1 is a side view of a device embodyinglniy invention;

Fig. :2 is a cross section on the line 22 of Figure 1; v

Fig. 3 is a cross section on the line so of Figure 1; and

Fig. l is a crossscction looking down on the line l'l of Figure 1. 7

As will be seen by reference to Figure i, the base block 10 has the shape in cross seclion or end view of an H-beam and it is preferably made somewhat longer than it is wide so that it may be easily lifted by hand and moved around to any desired position. It includes a series of holes 11 in its side flange 12 adapted to receive and lit the cylindrical rod 13. It will be noted that these holes are near the margin of the flange and there is a screw threadedopening entering the flange from the edge and extending to and joining the vertical openings whereby a screw threaded bolt let may be inserted'andscrewed home against the side of the rod 13 to hold it in any usted position. The bottom flange 15 of thebase portion 10 below the flange 12 so has a series of sockets 16 in vertical alignment with the openings 11 whereby the lower end of the rod- 13 ma lit in them so as to v rigidly hold that rod in upright position.

Slidably mounted onthe rod 13 there is a sleeve'li which-has rigidly secured to it a supporting bracket 18 composed of two strips of metal fitting opposite sides of the sleeve and secured to it by screws 19 and inclined towards each other until they come in contact from the point 20 to 21 at their outer ends. This bracket is adapte-dto sup port an ordinary well known hand (ll-lll- 22 such as that shown in Figure 1. its is well Known such drills include. an upper handle 23 and a sleeve extending longitudinally from its lower end having on it an idle bevel gear 24. A separzte and much larger bevel gear 25 is'pivotally connected to the said sleeve .26 b a c lindrical in 27 nassing 19o J ll through the sleeve and through bearing at the center of the gear a distance from the idle gear 9-1 such that the two gears will be in mesh. T he gear 25 is rotated on the pin 27 by the hand hold 28 and is held on that 5 pin by the nut on one side and by the sleeve 26 on the other side. Aspindlc 30 extends upwardly into the lower end of the sleeve 26 and is so connected to it as to be freely rotatable in it but is prevented'from moving longitudinally in it by means well known in the art. On the upper end of this spindle there is a bevel gear 31 meshing with the gear 25 and it is secured to the spindle 30 so as to rotate with it. lVhen the gear 25 therefore is turned by hand this spindle rotates and it carries the usual means 32 for receiving and holding the drill bit 33. No claim is made to the construction of the drill itself. As shown in Figure 3, the spindle 27 which carries the gear 25 extends through the sleeve 26 and also through an opening as through the outer end of the bracket 18 and a screw threaded nut 35 on the outer end of that rod is moved to clamp the bracket to the sleeve 26 so as tosecurely hold the drill in position with reference to the bracket. A hand hold 36 having a screw threaded socket at its end is secured to the other end of the spindle 27 beyond the nut 35.

In order to move the bracket 18 and the drill 522 up and down there is a clip 37 which as shown in Figure 2, is formed of a strip of metal bent around the rod 13 with its ends brought near together and parallel but suiticiently far apart to permit movement to clamp the rod so as to hold the clip in position on the rod by means'of a bolt 4 1 passing through to them having a thumb nut on one end. A lever arm 38 which as shown is composed of a flat strip of metal is pivoted at one end to one of the lapping ends of the strip forming the clip 37 by the bolt 39 passing through it and said end. A link 41 in the form of a strip of flat metal is pivoted at its lower end to the bracket 18 by a bolt and nut 12 and at its upper end is pivoted to the hand lever 38 by pivot pin 43 and in use extends in an upwardly direction.

It will be noted that the rod 13 may be detached from the base block 10 by simply unscrewing the bolt 14 and the hand lever 38 can also be easily detached from the other parts and this is true of the drill. This permits assembling the parts in small space for transportation for instance, although the device as shown occupies comparatively little space. In operation the rod 13 is placed in position in the holes in the base block 10- and nut 14 tightened to hold it in position,

the rod having been turned so as to bring the drill bit over the particular place where it is desired to operate on material by turning of rod 13 in the support. The up and down movement of the hand lever 38 of course moves the bracket 18 upwardly and downwardly on vertical lines through the link 41 and the sleeve 17 and bracket 18 is prevented from rotating or turning on rod 13 by the side contact connection between the hand lever 38 and clip 37 and with each other and with the lower end of link 4:1 and the side of the bracket 18. This maintains the parts in vertical alignment although the clip 37 may at any time desired be released from the rod 13 by turning the thumb nut a0 so as to permit it to rotate or move upwardlyor downwardly on the rod to any po sition desired.

It will be noted that the fact that the base 10 has the shape of the letter H in cross section, including a vertical web 45 corresponding to the cross line of the letter and horizontal laterally extending flanges 12 and 12 corresponding to the parallel line permits the work operated on to be easily clamped to the flanges or to the web by any suitable known clamp so as to hold the work securely in the proper fixed position for drilling the desired holes in it. It will also be noted that the base has substantially the same height as width this contributing to steadiness and preventing tipping. A-gear operated hand drill has been shown and described in combination with my invention but it will be understood that any other suitable known drill may be used in place of it.

Although one specific form of my invention has been shown for purposes of illustration it is not limited to the details shown beyond what is called for in the following claims.

Having thus described the invention what is claimed as new and desired to be secured by Letters Patent is:

1. A drill frame comprising in combination a vertical rod, a base of such size as to be easily grasped and moved by the hand of the user having the shape in cross section of an H beam and having corresponding vertical holes in its upper and lower horizontal flanges near an edge of such size as to receive and fit the lower end of said rod serving as a support for the rod and for the article to be drilled, a sleeve surrounding said rod and adapted to slide longitudinally thereof, a laterally projecting member rigidly secured to said sleeve at one end and adapted to be secured at its outer end to a rigid part of a drill, a hand lever pivotally connected at one end to said rod above said sleeve for turning in a vertical plane and a link pivotally connected at one end to said laterally extending member at its other end to said lever between its ends.

2. A drill frame comprising in combination a vertical rod, a base of such size as to be easily grasped and moved by the hand of idly secured to said sleeve at one end and adapted to be secured at its outer end to a rigid part of a drill, a hand lever plvotally connected atone end to said rod' above said sleeve for turning in a vertical plane and a link pivotally connected at one end to said laterally extending member at its other end to said lever between its ends, the said flanges of the base having screw thread openings in its margin extending to said vertical openings and a screw threaded bolt adapted to enter said screw threaded openings and bear at its inner end against said rod thereby rigidly connecting it to the base.

3. A drill frame comprising in combination, a vertical rod, a base of such size as to be easily grasped and moved by the hand of the user said base being substantially H- shaped in cross section with upper and lower fiat surfaces and vertical web, and having a socket formed therein within which the lower end of the vertical rod is received and rotatably held, the base serving as a sup port for the rod and the article to be drilled, means for locking the rod against upward movement during the drilling operation, said means being releasable so that the rod may be removed from the socket, a sleeve slidably mounted on the rod, a drill rigidly connected to the sleeve, and means for raising and lowering the sleeve anddrill.

4. A drill frame comprising in combination, a vertical rod, a substantial metal base having spaced flat parallel upper and lower plates, and means rigidly connecting the same, said base having a socket within which the lower end of the Vertical rod is received and is rotatably held, the base serving as a support for the rod and the article to be drilled, means for locking the rod against upward movement during the drilling operation, said means being releasable so that the rod may be removed from the socket, a sleeve slidably mounted on the rod, a drill connected to the sleeve, and means for raising and lowering the sleeve and drill.

In testimony whereof I hereunto affix my signature.

JAMES B. MARQUIS.

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