US2153860A - Automatic gauge adjuster - Google Patents

Description

April 11, 1939. F. BARNEY ET AL AUTOMATIC GAUGE ADJUSTER Filed Aug. 16, 1937 3 Sheets-Sheet l e. Lee l April 11, 1939. F BARNEY AL 2,153,860

AUTOMATIC GAUGE ADJUSTER Filed Aug. 16, 1957 3 Sheets-Sheet 5 Patented Apr. 11, 1939 "Tsar cr sis AUTOMATIC GAUGE ADJUSTER Application August 16,

10 Claims.

This invention relates to automatic gauge adjuster particularly adapted for use with paper drilling machines. The invention is directed to the automatic adjusting and stopping a gauge for the side edge of a pack of sheets of paper which are to be drilled with a plurality of holes therethrough, whereby the pack of paper is properly located with respect to the drill for the drilling of successive holes therethrough, the adjustment and locating of the gauge for a succeeding hole following in regular course after any hole has been drilled. Our invention is directed to the provision of a novel and eficient means or mechanism for automatically shifting and properly stopping the side gauge for the paper pack, such operation taking place after a hole has been drilled, so that after the drill has been lifted above the pack of paper sheets it may then be moved over to again engage with the side gauge and perfectly position the paper with respect to the drill such that the next hole drilled will be at the desired position and distance with reference to the preceding drilled hole.

An understanding of the invention may be had from the following description, taken in connection with the accompanying drawings, in which,

Fig. l is a side elevation of a paper drilling machine equipped with our invention.

Fig. 2 is a front elevation thereof.

Fig. 3 is a fragmentary enlarged front elevation showing the mechanism of the invention in larger scale than it is disclosed in Fig. 2.

Fig. 4 is a plan view of the structure shown in Fig. 3.

Fig. 5 is an end elevation looking at the machine from the left of Figs. 3 and 4.

Figs. 6 and 7 are vertical sections taken substantially on the planes of lines 6-6 and 'I'I of Fig. 3, looking in the direction indicated by the arrows.

Fig, 8 is a fragmentary rear elevation of an element of the structure, the front elevation of which is shown in Fig. 3.

Fig. 9 is a vertical section on the plane of line 9-9 of Fig. 7 looking in the direction indicated, and

Fig. 10 is a side view of a modified form of one detail of the structure.

Like reference characters refer to like parts in the different figures of the drawings.

In the construction shown, a horizontal table I upon which the paper to be drilled is placed is supported at the proper height for convenience of operation on a suitable support 2 which in turn is carried on a housing or cabinet 3. Vertical 1937, Serial No. 159,268

rods or posts 4 are mounted for up and down movement, extending above the support and normally, when free to do so, will take an upper position such as shown in Fig. 1 under the influence of a spring means (not shown) which elevates the rods. Down movement of the rods is through depression of a foot pedal 5 pivotally mounted at its inner end at 6 with a link bar 7 connecting the pedal with the rods or posts 4.

At the upper end of the vertical rods 4 a housing 8 is adjustably mounted by means of split clamping sleeves 9 which surround the upper end portions of the rods, the clamps being tightened at a desired position of the housing. An electric motor I0, through an endless belt II extending around pulleys on the motor shaft and on the shaft of a drill spindle I2 drives the spindle I2 and the connected tubular paper drill it, the lower end of which is directly above the table I. Therefore, by downward pressure upon the pedal 5 the rotating drill I3 is moved downwardly to the pack of paper sheets and drills a hole through the same, the disks which are cut from the sheets passing upwardly through the hollow drill. Associated with the drill is a presser bar I4 carried at the lower ends of two vertical rods I5 which have a slidable upward movement in suitable guides in the housing '8, springs I6 around the rods I5 resisting their upward movement, but yielding when the said presser member is brought against the paper sheet pack, thus holding the sheets against displacement under the action of the drill. This construction as thus far described is old and well known and specifically forms no part of the present invention, but is illustrated and described to show the environment where the present invention is used.

A back gauge consisting of the alined bars IT and i8 bolted or otherwise secured to a base bar I9 is adjustably mounted on the table I. A rod 20 extends lengthwise and back of the vertically positioned back gauge bars I! and I8, being connected with a block 2I at the outer end of the bars Ill and I9 and to other supporting blocks 22 whereby the rod 20 is in fixed permanent relation with respect to the back gauge. This back gauge consisting of the bars I'I, I8 and I9, rod 20 and the various block members, some of which have been mentioned and others of which will be hereafter described, provides a unit which may be placed against the upper side of the table I and at its ends secured by L-shaped bracket clamps 23 and set screws associated therewith as shown in Figs. 2 and 3 in a proper position back of the drill I3; and by changing the position of the back gauge the distance that the holes to be drilled will be in front of the rear edges of the paper sheets is controlled.

A sleeve 24 is slidably mounted on the rod 20 back of the bar I! and has connected with it a forwardly extending bracket 25 on which an end gauge stop bracket 26 is mounted carrying the end gauge member 21 against the flat vertical face of which one edge of the sheets of a pack of sheets to be drilled engage. The construction of this end gauge is shown in Patent No. 1,928,383, issued September 26, 1933. The lateral position of the paper sheets to be drilled with reference to the drill I3 is controlled by the position of the end gauge member 21 which position may be changed by sliding the sleeve 24 to different places on the rod 20.

A latching stop 28 spring actuated by a spring 29 is mounted on the bracket 25 and extends to the rear toward the back gauge bar it and is located a short distance above the upper edge of said bar l'l. This stop is manually operable towithdraw the same against the force of spring 29 by a hand operated lever 38 (Fig. 6). The bracket 25 has a relatively large circular opening 3| through which a hexagonal shaft 32 passes and on which a plurality of collars 33 are adjustably mounted, each having a radially projecting stop 34. While three of such collars have been shown the number may be varied. Set screws to hold the collars at any place to which adjusted pass through said collars to engage against the rod 32. At its outer end the shaft 32 is provided with a threaded cylindrical section 35 which threads through the block 2|. The shaft 32 is equipped with a hand wheel 36 for an adjustment of the bar lengthwise or to properly locate the angular positions of the stops 34, and may then be clamped against accidental or too free movement by tightening the set screw 31 to tighten the split threaded journal through which the shaft 32 passes.

A rotatable spring actuated wheel or drum 38 is mounted at the front side of and near the outer end of the back gauge bar I"! and has a steel tape 39 wound thereon the outer free end of which is connected with the bracket 25. Under the action of the spring actuated wheel 38 there is a tendency to wind the tape on the wheel and draw the bracket 25 with the connected end gauge 21 to the left. When this is done, if the bracket 25 is to the right of a collar 33 and the stop 34 on such collar is located in proper position, the stop 28 will strike against such stop 34, stopping the bracket 25 and the end gauge against further movement to the left.

Near the position of the drill l3 a block 45 is connected with the back gauge bar I! and the base bar IS, the rod 28 passing therethrough (Fig. '7), in which block a cylindrical recess is made into which the hexagonal shaft 32 extends, and on which a disk 4| is secured having a plurality of horizontal pins projecting therefrom equally spaced from each other around the disk. A spring 43 (shown in Fig. 7) is shaped at its free end to engage between any two adjacent pins 42 to yieldingly hold the disk and connected shaft 32 against movement, said spring however being yieldable so that the disk may be rotated. A member 44 having a dog which normally extends between two of the pins 42 is pivotally mounted on a push rod 46 which passes upwardly through a plate 41 located over and secured to the upper end of the block 40. The lower part of the push rod 46 is bifurcated for the reception of the member 44. A coiled spring 48 normally holds the push rod in upper position as shown in Fig. 7. The member 44 has a projection 49 extending outwardly opposite the dog on such member and over which a slide 50 (Fig. 8) may be moved to hold the push rod in lower inoperative position when the automatic adjustment of the end gauge is not to be used. The upper end of the push rod is immediately below a vertical screw 5! carried by the housing 3 whereby on the downward movement of the housing in. drilling the paper the lower end of the screw 5| comes against the push rod 45 and moves it in a downward direction. With such downward movement of the push rod, the dog on member 44 rides over the pin 42 immediately underneath it until it has come below such pin whereupon, on the upward movement of the housing 8 when the pedal 5 is released, the dog engaging under said pin 42 turns the disk 4| and the bar or shaft 32 in a counterclockwise direction (Fig. 7) and thus changes the positions of the collars 33 and the stops 34 thereon.

It is to be understood that with the plurality of collars 33 the stop 34 projecting therefrom extend at different angles to the horizontal. For example, in Fig. 6 the one stop shown in full lines is located horizontally and the two indicated in dotted lines are, in succession, from each other.

In the operation of the machine the drill being at upper position as shown in Fig. 1, the bracket 25 is manually moved so that the latch stop 28 is engaged with the stop 34 on the collar 33 nearest the drill. The pack of paper sheets to be drilled is placed on the table with the back edges against the back gauge bars l1 and I8 and with the end edges to the left against the end gauge 21. Then on depression of the pedal 5 the presser member |4 comes against the uppermost sheet and on further depression drill |3 drills through the paper. As this operation continues the lower end of the screw 5| comes against the push rod 46 moving the same downwardly and compressing the spring 48 until, substantially at the end of the drilling operation, the dog at 44 passes underneath the pin 42 which initially was directly below said dog 44. Then upon release of the foot pedal and, the upward movement of the rods or posts 4, and the mechanism connected therewith, the disk 4| is turned and moves the stop 34 of the collar 33 which has been engaged with the latching dog 28 out of engagement therewith. At the same time the next succeeding collar 33 to the left with its stop 34 has been moved to locate the stop in horizontal position such that when the disengagement of the first stop 34 with the stop 28 occurs, the spring actuated wheel 38 winding up the steel tape 39 moves the bracket 25 to the left and brings the stop 28 against the stop 34 of the second collar. Thereupon, the operator repositions the pack of paper sheets against the back gauge and moves the same over to again engage against the end gauge 21 and the drilling operation may be repeated. At the end of this operation and with the release of the pedal 5 a disengagement is made from the stop 34 of the second collar 33 and the engagement made with the stop 34 of the next collar 33 tothe left, thereby again automatically changing the position of the end gauge member 21.

As shown in Figs. 3 and 4, a solid collar 33a having a radius equal to the distance from the center of the shaft 32 to the free end of a dog 34 may be mounted on the shaft beyond the collar 33 farthest to the left, serving as a stop for the movementof the bracketl'i to the left after the last drilling operation has been performed. Or as-mayibe preferred, the collar 33 farthest to the left may the replaced by the solid collar 33a wherebyat the endof the last drilling operation and .the partial rotation of the shaft 32 there will not bea disengagement of :the stop 28 .from

.said large collar. Thereupon, the machine may be reset :for subsequent drillings.

In Fig. 110 :the collar '33 is shown as replaced :by a modified form of collar 3311 from which three projecting stops '34 extend, located 120 from each other. This permits resetting the machine for drilling a new pack of paper without turning the shaft :32 but merely moving the bracket '25 to the right, either withdrawing the stopi'28 by depressionof thelever 36, or by having the beveled nose thereof (see 4) ride over the likebeveled end of the stop at 3Q on the collar 3317 which will be farthest to the right. This resetting without changing the position of the shaft 32 can be performed when the number of holes drilled through a pack of paper sheets is an even number.

It is, of course, to be understood that the number of collars 33 or 33b on the: shaft 32 may be varied in accordance with the number of holes which are to be drilled in the paper sheet pack. Also, that the shaft 32 may be turned manually by the hand wheel 36 as much as may be needed in any resetting of the machine for drilling a new paper sheet pack after the previous one has been drilled.

With this machine there is a quick and automatic proper positioning of the end gauge for the paper at the end of each drilling operation. The construction is relatively simple, easily operated and adjusted and is sure in its operation. The invention is defined in the appended claims and is to be considered comprehensive of all forms of structure coming within their scope.

We claim:

1. In a machine of the class described, a horizontal table, a back gauge located above and longitudinally of the table, a side gauge movable longitudinally of the table and located in front of the back gauge, a rotatable drill mounted above the table adapted to be moved toward the table for drilling paper and away from the table after the drilling is completed, spring means tending to move the side gauge in. one direction, stop means associated with the side gauge for holding it in a predetermined position, means operated on the said movements of the drill for releasing said stop means to free the side gauge for movement, and manually operable means to render ineffective the stop means associated with said side gauge.

2. In a machine of the class described, a supporting table, a back gauge located above and longitudinally thereof, a slidably mounted side gauge located in front of the back gauge and movable lengthwise thereof to different positions, a rotatable shaft paralleling the back gauge, a plurality of spaced apart stops thereon, each occupying a different angular position than the other, a cooperating stop movable with the side gauge, means moving the side gauge in one direction when free to do so, a vertical drill, means for vertically reciprocating the drill, means. for rotating the shaft to change the position. of the stops thereon on. movement of the drill after it has completed a drilling movement, and manually operable means to render said cooperating stop ineffective.

.3. In a construction of the class described, a horizontal table, a back gauge located lengthwise of and abovethe table and secured in fixed relation thereto, a horizontal rod paralleling the back gauge mounted thereon, a sleeve slidable on said rod, a supporting bracket connected with said sleeve extending in front of the back gauge, a side gauge carried by said bracketto engage edges of sheets of paper located at right angles to other edges of the paper engaging against the back gauge, a rotatable shaft extended through said bracket substantially parallel to the back gauge, a plurality of collars thereon spaced fromeach other, a stop projecting radially from eachcollar, said stops extending from the collars at different angles, a cooperating stop mounted on said bracket, means connected with said bracket to move the bracket in one direction when free to do so, said means being ineffective when the stop .on the :bracket is engaged with astop on a collar, a vertical drill, a vertically reciprocable support therefor and means operated by said reciprocable drill support to rotate said shaft a predetermined amount on the completion of a downward movement followed by an upward movement of said drill support, whereby a stop on a collar engaged with the cooperating stop on the bracket is disengaged therefrom and a stop on the next sucoeeding collar is moved into the path of movement of said stop on the bracket to engage therewith and stop the movement of the bracket and associated side gauge at a predetermined second position.

i. In a machine of the class described, a horizontal table, a back gauge mounted thereon and extending longitudinally of and above the table, a side gauge located in front of the back gauge and movable over the table in a direction substantially parallel to the back gauge, means for moving said side gauge in one direction, a rotatably mounted shaft, a plurality of spaced apart collars mounted on the shaft having stops extending radially therefrom at different angles, a stop associated and movable with the side gauge adapted to engage with the stops on said collars in succession, a vertically positioned drill, means carrying the drill, said means being movable toward and away from the table, and means for turning the shaft on return movement of said drill carrying means after a movement toward the table thereof to rotate said shaft and thereby change the positions of the stops on said collars, and manually operable means for withdrawing the stop associated and movable with the side gauge to an inoperative position.

5. In a paper drilling machine having a back gauge, a movable side gauge and a vertically reciprocating unit for the drill, automatic means for adjusting the side gauge for successive drilling operations comprising a rotatably mounted shaft, a plurality of collars adjustably mounted thereon, each of said collars having an arm radially extending therefrom, a stop associated and movable with said side gauge to engage with the arms on said collars successively, means for automatically moving said side gauge between said collars, a housing surrounding one end of said shaft, a vertically reciprocating pin extending from. said housing, and means cooperatively associated with said unit and said pin whereby said shaft is rotated each time a drilling operation is completed and the drill is returned to its normal position, as and for the purpose specified.

6. In a drilling machine having a back gauge, a movable side gauge and a rotatable shaft upon which the side gauge is adapted to slide, means for automatically rotating said shaft through a predetermined angle at the completion of each drilling operation for the purpose specified comprising, a housing surrounding one end of said shaft, a disk secured to said shaft within the housing, a vertically reciprocating pin extending through one side of said housing, means to depress said pin on the downward movement of a drilling operation, means to raise said pin at the completion of said operation, and means associ ated with said pin to rotate said disk on the upward movement of said pin.

7 The combination of elements as defined in claim 6, combined with manually operable means to withdraw the stop associated and movable with the side gauge to an inoperative position.

8. The combination of elements as defined in claim 6, said disk having a plurality of pegs extending therefrom, and said means associated with said pin including a pivotally mounted member having a projection thereon adapted to engage one of said pegs in its upward movement, whereby said disk and shaft are rotated.

9. The combination of elements as defined in claim 6, said disk having a plurality of pegs extending therefrom and said last named means including a pivotally mounted member having a projection thereon to engage one of said pegs, said projection being beveled at its under side to allow it to slide over the peg when it is moved downwardly, whereby rotation of the disk and shaft is caused only when said pin moves upwardly.

10. The combination of elements as defined in claim 6, combined with means to prevent rotation of said disk during the downward movement of said pin.

FREEMAN BARNEY. JAMES WESLEY LEE.

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